GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2023-52880 (GCVE-0-2023-52880)

Vulnerability from cvelistv5 – Published: 2024-05-24 15:33 – Updated: 2026-08-05 09:11
VLAI
Title
tty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc
Summary
In the Linux kernel, the following vulnerability has been resolved: tty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc Any unprivileged user can attach N_GSM0710 ldisc, but it requires CAP_NET_ADMIN to create a GSM network anyway. Require initial namespace CAP_NET_ADMIN to do that.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-24 19:10 UTC
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e1eaea46bb4020b38a141b84f88565d4603f8dd0 , < 7d303dee473ba3529d75b63491e9963342107bed (git)
Affected: e1eaea46bb4020b38a141b84f88565d4603f8dd0 , < 7a529c9023a197ab3bf09bb95df32a3813f7ba58 (git)
Affected: e1eaea46bb4020b38a141b84f88565d4603f8dd0 , < ada28eb4b9561aab93942f3224a2e41d76fe57fa (git)
Affected: e1eaea46bb4020b38a141b84f88565d4603f8dd0 , < 2d154a54c58f9c8375bfbea9f7e51ba3bfb2e43a (git)
Affected: e1eaea46bb4020b38a141b84f88565d4603f8dd0 , < 2b85977977cbd120591b23c2450e90a5806a7167 (git)
Affected: e1eaea46bb4020b38a141b84f88565d4603f8dd0 , < 67c37756898a5a6b2941a13ae7260c89b54e0d88 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.35
Unaffected: 0 , < 2.6.35 (semver)
Unaffected: 4.19.312 , ≤ 4.19.* (semver)
Unaffected: 5.4.274 , ≤ 5.4.* (semver)
Unaffected: 5.10.215 , ≤ 5.10.* (semver)
Unaffected: 5.15.155 , ≤ 5.15.* (semver)
Unaffected: 6.1.86 , ≤ 6.1.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-52880",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-05-24T19:10:27.057428Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:23:31.686Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T23:18:41.167Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/7d303dee473ba3529d75b63491e9963342107bed"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/7a529c9023a197ab3bf09bb95df32a3813f7ba58"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/ada28eb4b9561aab93942f3224a2e41d76fe57fa"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/2d154a54c58f9c8375bfbea9f7e51ba3bfb2e43a"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/2b85977977cbd120591b23c2450e90a5806a7167"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/67c37756898a5a6b2941a13ae7260c89b54e0d88"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/tty/n_gsm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7d303dee473ba3529d75b63491e9963342107bed",
              "status": "affected",
              "version": "e1eaea46bb4020b38a141b84f88565d4603f8dd0",
              "versionType": "git"
            },
            {
              "lessThan": "7a529c9023a197ab3bf09bb95df32a3813f7ba58",
              "status": "affected",
              "version": "e1eaea46bb4020b38a141b84f88565d4603f8dd0",
              "versionType": "git"
            },
            {
              "lessThan": "ada28eb4b9561aab93942f3224a2e41d76fe57fa",
              "status": "affected",
              "version": "e1eaea46bb4020b38a141b84f88565d4603f8dd0",
              "versionType": "git"
            },
            {
              "lessThan": "2d154a54c58f9c8375bfbea9f7e51ba3bfb2e43a",
              "status": "affected",
              "version": "e1eaea46bb4020b38a141b84f88565d4603f8dd0",
              "versionType": "git"
            },
            {
              "lessThan": "2b85977977cbd120591b23c2450e90a5806a7167",
              "status": "affected",
              "version": "e1eaea46bb4020b38a141b84f88565d4603f8dd0",
              "versionType": "git"
            },
            {
              "lessThan": "67c37756898a5a6b2941a13ae7260c89b54e0d88",
              "status": "affected",
              "version": "e1eaea46bb4020b38a141b84f88565d4603f8dd0",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/tty/n_gsm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.35"
            },
            {
              "lessThan": "2.6.35",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.312",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.274",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.215",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.155",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.6",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.312",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.274",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.215",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.155",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.86",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc\n\nAny unprivileged user can attach N_GSM0710 ldisc, but it requires\nCAP_NET_ADMIN to create a GSM network anyway.\n\nRequire initial namespace CAP_NET_ADMIN to do that."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - Exploitation is entirely local: an attacker opens a pty (/dev/ptmx), issues ioctl(TIOCSETD, N_GSM0710) \u2192 tiocsetd \u2192 tty_set_ldisc \u2192 gsmld_open, then drives GSMIOC_SETCONF and frame I/O on that tty. There is no network-facing or adjacent-link path into this code.\nAC:L - Attaching the ldisc and configuring the mux is fully attacker-controlled and deterministic on a self-owned pty, with no race or other condition outside the attacker\u2019s influence.\nPR:L - Before the fix, gsmld_open had no capability check, so any unprivileged local user with a pty could attach N_GSM0710; CAP_NET_ADMIN was only required later for GSMIOC_ENABLE_NET, not for attach/configure.\nUI:N - The attacker performs openpty, TIOCSETD, GSMIOC_SETCONF, and subsequent I/O entirely in their own process; no victim action is required.\nS:U - Impact remains within the host kernel\u2019s security authority as a local privilege-escalation/DoS boundary; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Unprivileged attach exposes the full n_gsm mux/parser heap paths; throughout this CVE\u2019s lifetime the same entry path enabled serious memory-corruption bugs (e.g. CVE-2024-36016 heap OOB readable via DLCI/tty paths, timer/cleanup UAFs), yielding kernel disclosure primitives.\nI:H - The same exposed attach/configure/cleanup surface enables heap overflow and use-after-free write primitives against adjacent slab objects and gsm_mux control state, supporting arbitrary write and control-flow hijack.\nA:H - Abusing the unprivileged mux attach/teardown and parser paths reliably corrupts kernel state and triggers oops/panic (as seen in related n_gsm KASAN/oops reports), fully denying host availability."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T09:11:49.513Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7d303dee473ba3529d75b63491e9963342107bed"
        },
        {
          "url": "https://git.kernel.org/stable/c/7a529c9023a197ab3bf09bb95df32a3813f7ba58"
        },
        {
          "url": "https://git.kernel.org/stable/c/ada28eb4b9561aab93942f3224a2e41d76fe57fa"
        },
        {
          "url": "https://git.kernel.org/stable/c/2d154a54c58f9c8375bfbea9f7e51ba3bfb2e43a"
        },
        {
          "url": "https://git.kernel.org/stable/c/2b85977977cbd120591b23c2450e90a5806a7167"
        },
        {
          "url": "https://git.kernel.org/stable/c/67c37756898a5a6b2941a13ae7260c89b54e0d88"
        }
      ],
      "title": "tty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-52880",
    "datePublished": "2024-05-24T15:33:17.439Z",
    "dateReserved": "2024-05-21T15:35:00.781Z",
    "dateUpdated": "2026-08-05T09:11:49.513Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-52880",
      "date": "2026-09-19",
      "epss": "0.00245",
      "percentile": "0.16063"
    },
    "fkie_nvd": {
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc\n\nAny unprivileged user can attach N_GSM0710 ldisc, but it requires\nCAP_NET_ADMIN to create a GSM network anyway.\n\nRequire initial namespace CAP_NET_ADMIN to do that."
        },
        {
          "lang": "es",
          "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tty: n_gsm: requiere CAP_NET_ADMIN para adjuntar el ldisc N_GSM0710. Cualquier usuario sin privilegios puede adjuntar el ldisc N_GSM0710, pero de todos modos requiere CAP_NET_ADMIN para crear una red GSM. Requiere el espacio de nombres inicial CAP_NET_ADMIN para hacer eso."
        }
      ],
      "id": "CVE-2023-52880",
      "lastModified": "2024-11-21T08:40:47.160",
      "published": "2024-05-24T16:15:10.033",
      "references": [
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/2b85977977cbd120591b23c2450e90a5806a7167"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/2d154a54c58f9c8375bfbea9f7e51ba3bfb2e43a"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/67c37756898a5a6b2941a13ae7260c89b54e0d88"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/7a529c9023a197ab3bf09bb95df32a3813f7ba58"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/7d303dee473ba3529d75b63491e9963342107bed"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/ada28eb4b9561aab93942f3224a2e41d76fe57fa"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/2b85977977cbd120591b23c2450e90a5806a7167"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/2d154a54c58f9c8375bfbea9f7e51ba3bfb2e43a"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/67c37756898a5a6b2941a13ae7260c89b54e0d88"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/7a529c9023a197ab3bf09bb95df32a3813f7ba58"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/7d303dee473ba3529d75b63491e9963342107bed"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/ada28eb4b9561aab93942f3224a2e41d76fe57fa"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
        }
      ],
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Awaiting Analysis"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/tty/n_gsm.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "7d303dee473ba3529d75b63491e9963342107bed",
                    "status": "affected",
                    "version": "e1eaea46bb4020b38a141b84f88565d4603f8dd0",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "7a529c9023a197ab3bf09bb95df32a3813f7ba58",
                    "status": "affected",
                    "version": "e1eaea46bb4020b38a141b84f88565d4603f8dd0",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "ada28eb4b9561aab93942f3224a2e41d76fe57fa",
                    "status": "affected",
                    "version": "e1eaea46bb4020b38a141b84f88565d4603f8dd0",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "2d154a54c58f9c8375bfbea9f7e51ba3bfb2e43a",
                    "status": "affected",
                    "version": "e1eaea46bb4020b38a141b84f88565d4603f8dd0",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "2b85977977cbd120591b23c2450e90a5806a7167",
                    "status": "affected",
                    "version": "e1eaea46bb4020b38a141b84f88565d4603f8dd0",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "67c37756898a5a6b2941a13ae7260c89b54e0d88",
                    "status": "affected",
                    "version": "e1eaea46bb4020b38a141b84f88565d4603f8dd0",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/tty/n_gsm.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "2.6.35"
                  },
                  {
                    "lessThan": "2.6.35",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "4.19.*",
                    "status": "unaffected",
                    "version": "4.19.312",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.4.*",
                    "status": "unaffected",
                    "version": "5.4.274",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.215",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.155",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.86",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.6",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "23F858DD-6739-4BD9-9DA9-A9F5F66187C0",
                    "versionEndExcluding": "4.19.312",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "F45A0F3C-C16D-49C4-86D6-D021C3D4B834",
                    "versionEndExcluding": "5.4.274",
                    "versionStartIncluding": "4.20",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9CD5894E-58E9-4B4A-B0F4-3E6BC134B8F5",
                    "versionEndExcluding": "5.10.215",
                    "versionStartIncluding": "5.5",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "F11B6314-A852-4FBD-AD84-ECE23F5C092B",
                    "versionEndExcluding": "5.15.155",
                    "versionStartIncluding": "5.11",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "F5D13FF4-8931-475F-A397-FD0594589F56",
                    "versionEndExcluding": "6.1.86",
                    "versionStartIncluding": "5.16",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6747FDB4-EF6B-4019-9232-82D90A3D6E73",
                    "versionEndExcluding": "6.6",
                    "versionStartIncluding": "6.2",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc\n\nAny unprivileged user can attach N_GSM0710 ldisc, but it requires\nCAP_NET_ADMIN to create a GSM network anyway.\n\nRequire initial namespace CAP_NET_ADMIN to do that."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tty: n_gsm: requiere CAP_NET_ADMIN para adjuntar el ldisc N_GSM0710. Cualquier usuario sin privilegios puede adjuntar el ldisc N_GSM0710, pero de todos modos requiere CAP_NET_ADMIN para crear una red GSM. Requiere el espacio de nombres inicial CAP_NET_ADMIN para hacer eso."
          }
        ],
        "id": "CVE-2023-52880",
        "lastModified": "2026-08-04T10:18:47.410",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2023-52880",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-05-24T19:10:27.057428Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2024-05-24T16:15:10.033",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/2b85977977cbd120591b23c2450e90a5806a7167"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/2d154a54c58f9c8375bfbea9f7e51ba3bfb2e43a"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/67c37756898a5a6b2941a13ae7260c89b54e0d88"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/7a529c9023a197ab3bf09bb95df32a3813f7ba58"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/7d303dee473ba3529d75b63491e9963342107bed"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/ada28eb4b9561aab93942f3224a2e41d76fe57fa"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/2b85977977cbd120591b23c2450e90a5806a7167"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/2d154a54c58f9c8375bfbea9f7e51ba3bfb2e43a"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/67c37756898a5a6b2941a13ae7260c89b54e0d88"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/7a529c9023a197ab3bf09bb95df32a3813f7ba58"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/7d303dee473ba3529d75b63491e9963342107bed"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/ada28eb4b9561aab93942f3224a2e41d76fe57fa"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-04T22:56:31+00:00",
      "cve": "CVE-2023-52880",
      "id": "CVE-2023-52880",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:fixed": "513",
      "product_status:known_affected": "98",
      "product_status:known_not_affected": "15",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: tty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-52880.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-08T00:14:19Z",
      "cve": "CVE-2023-52880",
      "id": "CVE-2023-52880",
      "initial_release_date": "2024-05-28T15:00:52Z",
      "product_status:known_affected": "418",
      "product_status:known_not_affected": "24",
      "product_status:recommended": "1081",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-52880",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-52880.json",
      "version": "95"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2024-08-02T23:18:41.167Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://git.kernel.org/stable/c/7d303dee473ba3529d75b63491e9963342107bed"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://git.kernel.org/stable/c/7a529c9023a197ab3bf09bb95df32a3813f7ba58"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://git.kernel.org/stable/c/ada28eb4b9561aab93942f3224a2e41d76fe57fa"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://git.kernel.org/stable/c/2d154a54c58f9c8375bfbea9f7e51ba3bfb2e43a"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://git.kernel.org/stable/c/2b85977977cbd120591b23c2450e90a5806a7167"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://git.kernel.org/stable/c/67c37756898a5a6b2941a13ae7260c89b54e0d88"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2023-52880",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2024-05-24T19:10:27.057428Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-05-24T19:10:42.540Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "drivers/tty/n_gsm.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "7d303dee473ba3529d75b63491e9963342107bed",
                  "status": "affected",
                  "version": "e1eaea46bb4020b38a141b84f88565d4603f8dd0",
                  "versionType": "git"
                },
                {
                  "lessThan": "7a529c9023a197ab3bf09bb95df32a3813f7ba58",
                  "status": "affected",
                  "version": "e1eaea46bb4020b38a141b84f88565d4603f8dd0",
                  "versionType": "git"
                },
                {
                  "lessThan": "ada28eb4b9561aab93942f3224a2e41d76fe57fa",
                  "status": "affected",
                  "version": "e1eaea46bb4020b38a141b84f88565d4603f8dd0",
                  "versionType": "git"
                },
                {
                  "lessThan": "2d154a54c58f9c8375bfbea9f7e51ba3bfb2e43a",
                  "status": "affected",
                  "version": "e1eaea46bb4020b38a141b84f88565d4603f8dd0",
                  "versionType": "git"
                },
                {
                  "lessThan": "2b85977977cbd120591b23c2450e90a5806a7167",
                  "status": "affected",
                  "version": "e1eaea46bb4020b38a141b84f88565d4603f8dd0",
                  "versionType": "git"
                },
                {
                  "lessThan": "67c37756898a5a6b2941a13ae7260c89b54e0d88",
                  "status": "affected",
                  "version": "e1eaea46bb4020b38a141b84f88565d4603f8dd0",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/tty/n_gsm.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "2.6.35"
                },
                {
                  "lessThan": "2.6.35",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "4.19.*",
                  "status": "unaffected",
                  "version": "4.19.312",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.4.*",
                  "status": "unaffected",
                  "version": "5.4.274",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.215",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.155",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.86",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.6",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "4.19.312",
                      "versionStartIncluding": "2.6.35",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.4.274",
                      "versionStartIncluding": "2.6.35",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.215",
                      "versionStartIncluding": "2.6.35",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.155",
                      "versionStartIncluding": "2.6.35",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.86",
                      "versionStartIncluding": "2.6.35",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6",
                      "versionStartIncluding": "2.6.35",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc\n\nAny unprivileged user can attach N_GSM0710 ldisc, but it requires\nCAP_NET_ADMIN to create a GSM network anyway.\n\nRequire initial namespace CAP_NET_ADMIN to do that."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "value": "AV:L - Exploitation is entirely local: an attacker opens a pty (/dev/ptmx), issues ioctl(TIOCSETD, N_GSM0710) \u2192 tiocsetd \u2192 tty_set_ldisc \u2192 gsmld_open, then drives GSMIOC_SETCONF and frame I/O on that tty. There is no network-facing or adjacent-link path into this code.\nAC:L - Attaching the ldisc and configuring the mux is fully attacker-controlled and deterministic on a self-owned pty, with no race or other condition outside the attacker\u2019s influence.\nPR:L - Before the fix, gsmld_open had no capability check, so any unprivileged local user with a pty could attach N_GSM0710; CAP_NET_ADMIN was only required later for GSMIOC_ENABLE_NET, not for attach/configure.\nUI:N - The attacker performs openpty, TIOCSETD, GSMIOC_SETCONF, and subsequent I/O entirely in their own process; no victim action is required.\nS:U - Impact remains within the host kernel\u2019s security authority as a local privilege-escalation/DoS boundary; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Unprivileged attach exposes the full n_gsm mux/parser heap paths; throughout this CVE\u2019s lifetime the same entry path enabled serious memory-corruption bugs (e.g. CVE-2024-36016 heap OOB readable via DLCI/tty paths, timer/cleanup UAFs), yielding kernel disclosure primitives.\nI:H - The same exposed attach/configure/cleanup surface enables heap overflow and use-after-free write primitives against adjacent slab objects and gsm_mux control state, supporting arbitrary write and control-flow hijack.\nA:H - Abusing the unprivileged mux attach/teardown and parser paths reliably corrupts kernel state and triggers oops/panic (as seen in related n_gsm KASAN/oops reports), fully denying host availability."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T09:11:49.513Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/7d303dee473ba3529d75b63491e9963342107bed"
            },
            {
              "url": "https://git.kernel.org/stable/c/7a529c9023a197ab3bf09bb95df32a3813f7ba58"
            },
            {
              "url": "https://git.kernel.org/stable/c/ada28eb4b9561aab93942f3224a2e41d76fe57fa"
            },
            {
              "url": "https://git.kernel.org/stable/c/2d154a54c58f9c8375bfbea9f7e51ba3bfb2e43a"
            },
            {
              "url": "https://git.kernel.org/stable/c/2b85977977cbd120591b23c2450e90a5806a7167"
            },
            {
              "url": "https://git.kernel.org/stable/c/67c37756898a5a6b2941a13ae7260c89b54e0d88"
            }
          ],
          "title": "tty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2023-52880",
        "datePublished": "2024-05-24T15:33:17.439Z",
        "dateReserved": "2024-05-21T15:35:00.781Z",
        "dateUpdated": "2026-08-05T09:11:49.513Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


Loading…