CVE-2024-35895 (GCVE-0-2024-35895)

Vulnerability from cvelistv5 – Published: 2024-05-19 08:34 – Updated: 2026-05-12 11:52
VLAI
Title
bpf, sockmap: Prevent lock inversion deadlock in map delete elem
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Prevent lock inversion deadlock in map delete elem syzkaller started using corpuses where a BPF tracing program deletes elements from a sockmap/sockhash map. Because BPF tracing programs can be invoked from any interrupt context, locks taken during a map_delete_elem operation must be hardirq-safe. Otherwise a deadlock due to lock inversion is possible, as reported by lockdep: CPU0 CPU1 ---- ---- lock(&htab->buckets[i].lock); local_irq_disable(); lock(&host->lock); lock(&htab->buckets[i].lock); <Interrupt> lock(&host->lock); Locks in sockmap are hardirq-unsafe by design. We expects elements to be deleted from sockmap/sockhash only in task (normal) context with interrupts enabled, or in softirq context. Detect when map_delete_elem operation is invoked from a context which is _not_ hardirq-unsafe, that is interrupts are disabled, and bail out with an error. Note that map updates are not affected by this issue. BPF verifier does not allow updating sockmap/sockhash from a BPF tracing program today.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-23 19:25 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 604326b41a6fb9b4a78b6179335decee0365cd8c , < f7990498b05ac41f7d6a190dc0418ef1d21bf058 (git)
Affected: 604326b41a6fb9b4a78b6179335decee0365cd8c , < dd54b48db0c822ae7b520bc80751f0a0a173ef75 (git)
Affected: 604326b41a6fb9b4a78b6179335decee0365cd8c , < d1e73fb19a4c872d7a399ad3c66e8ca30e0875ec (git)
Affected: 604326b41a6fb9b4a78b6179335decee0365cd8c , < a44770fed86515eedb5a7c00b787f847ebb134a5 (git)
Affected: 604326b41a6fb9b4a78b6179335decee0365cd8c , < 668b3074aa14829e2ac2759799537a93b60fef86 (git)
Affected: 604326b41a6fb9b4a78b6179335decee0365cd8c , < 6af057ccdd8e7619960aca1f0428339f213b31cd (git)
Affected: 604326b41a6fb9b4a78b6179335decee0365cd8c , < ff91059932401894e6c86341915615c5eb0eca48 (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.20
Unaffected: 0 , < 4.20 (semver)
Unaffected: 5.4.274 , ≤ 5.4.* (semver)
Unaffected: 5.10.215 , ≤ 5.10.* (semver)
Unaffected: 5.15.154 , ≤ 5.15.* (semver)
Unaffected: 6.1.85 , ≤ 6.1.* (semver)
Unaffected: 6.6.26 , ≤ 6.6.* (semver)
Unaffected: 6.8.5 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
guessed Create a notification for this product.
Show details on NVD website
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                ],
                "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2024-35895",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2024-05-23T19:25:39.256006Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-05-23T19:25:43.605Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "net/core/sock_map.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "f7990498b05ac41f7d6a190dc0418ef1d21bf058",
                  "status": "affected",
                  "version": "604326b41a6fb9b4a78b6179335decee0365cd8c",
                  "versionType": "git"
                },
                {
                  "lessThan": "dd54b48db0c822ae7b520bc80751f0a0a173ef75",
                  "status": "affected",
                  "version": "604326b41a6fb9b4a78b6179335decee0365cd8c",
                  "versionType": "git"
                },
                {
                  "lessThan": "d1e73fb19a4c872d7a399ad3c66e8ca30e0875ec",
                  "status": "affected",
                  "version": "604326b41a6fb9b4a78b6179335decee0365cd8c",
                  "versionType": "git"
                },
                {
                  "lessThan": "a44770fed86515eedb5a7c00b787f847ebb134a5",
                  "status": "affected",
                  "version": "604326b41a6fb9b4a78b6179335decee0365cd8c",
                  "versionType": "git"
                },
                {
                  "lessThan": "668b3074aa14829e2ac2759799537a93b60fef86",
                  "status": "affected",
                  "version": "604326b41a6fb9b4a78b6179335decee0365cd8c",
                  "versionType": "git"
                },
                {
                  "lessThan": "6af057ccdd8e7619960aca1f0428339f213b31cd",
                  "status": "affected",
                  "version": "604326b41a6fb9b4a78b6179335decee0365cd8c",
                  "versionType": "git"
                },
                {
                  "lessThan": "ff91059932401894e6c86341915615c5eb0eca48",
                  "status": "affected",
                  "version": "604326b41a6fb9b4a78b6179335decee0365cd8c",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "net/core/sock_map.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "4.20"
                },
                {
                  "lessThan": "4.20",
                  "status": "unaffected",
                  "version": "0",
                  "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": "5.15.154",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.85",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.26",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.8.*",
                  "status": "unaffected",
                  "version": "6.8.5",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.9",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.4.274",
                      "versionStartIncluding": "4.20",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.215",
                      "versionStartIncluding": "4.20",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.154",
                      "versionStartIncluding": "4.20",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.85",
                      "versionStartIncluding": "4.20",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.26",
                      "versionStartIncluding": "4.20",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.8.5",
                      "versionStartIncluding": "4.20",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.9",
                      "versionStartIncluding": "4.20",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, sockmap: Prevent lock inversion deadlock in map delete elem\n\nsyzkaller started using corpuses where a BPF tracing program deletes\nelements from a sockmap/sockhash map. Because BPF tracing programs can be\ninvoked from any interrupt context, locks taken during a map_delete_elem\noperation must be hardirq-safe. Otherwise a deadlock due to lock inversion\nis possible, as reported by lockdep:\n\n       CPU0                    CPU1\n       ----                    ----\n  lock(\u0026htab-\u003ebuckets[i].lock);\n                               local_irq_disable();\n                               lock(\u0026host-\u003elock);\n                               lock(\u0026htab-\u003ebuckets[i].lock);\n  \u003cInterrupt\u003e\n    lock(\u0026host-\u003elock);\n\nLocks in sockmap are hardirq-unsafe by design. We expects elements to be\ndeleted from sockmap/sockhash only in task (normal) context with interrupts\nenabled, or in softirq context.\n\nDetect when map_delete_elem operation is invoked from a context which is\n_not_ hardirq-unsafe, that is interrupts are disabled, and bail out with an\nerror.\n\nNote that map updates are not affected by this issue. BPF verifier does not\nallow updating sockmap/sockhash from a BPF tracing program today."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-05-04T09:07:50.310Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/f7990498b05ac41f7d6a190dc0418ef1d21bf058"
            },
            {
              "url": "https://git.kernel.org/stable/c/dd54b48db0c822ae7b520bc80751f0a0a173ef75"
            },
            {
              "url": "https://git.kernel.org/stable/c/d1e73fb19a4c872d7a399ad3c66e8ca30e0875ec"
            },
            {
              "url": "https://git.kernel.org/stable/c/a44770fed86515eedb5a7c00b787f847ebb134a5"
            },
            {
              "url": "https://git.kernel.org/stable/c/668b3074aa14829e2ac2759799537a93b60fef86"
            },
            {
              "url": "https://git.kernel.org/stable/c/6af057ccdd8e7619960aca1f0428339f213b31cd"
            },
            {
              "url": "https://git.kernel.org/stable/c/ff91059932401894e6c86341915615c5eb0eca48"
            }
          ],
          "title": "bpf, sockmap: Prevent lock inversion deadlock in map delete elem",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-35895",
        "datePublished": "2024-05-19T08:34:50.276Z",
        "dateReserved": "2024-05-17T13:50:33.113Z",
        "dateUpdated": "2025-05-04T09:07:50.310Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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.