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CVE-2022-49548 (GCVE-0-2022-49548)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:13 – Updated: 2026-05-11 19:02
VLAI
Title
bpf: Fix potential array overflow in bpf_trampoline_get_progs()
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix potential array overflow in bpf_trampoline_get_progs() The cnt value in the 'cnt >= BPF_MAX_TRAMP_PROGS' check does not include BPF_TRAMP_MODIFY_RETURN bpf programs, so the number of the attached BPF_TRAMP_MODIFY_RETURN bpf programs in a trampoline can exceed BPF_MAX_TRAMP_PROGS. When this happens, the assignment '*progs++ = aux->prog' in bpf_trampoline_get_progs() will cause progs array overflow as the progs field in the bpf_tramp_progs struct can only hold at most BPF_MAX_TRAMP_PROGS bpf programs.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:37 UTC
CWE
  • CWE-129 - Improper Validation of Array Index
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 88fd9e5352fe05f7fe57778293aebd4cd106960b , < 7f845de2863334bed4f362e95853f5e7bc323737 (git)
Affected: 88fd9e5352fe05f7fe57778293aebd4cd106960b , < e36452d5da6325df7c10cffc60a9e68d21e2606d (git)
Affected: 88fd9e5352fe05f7fe57778293aebd4cd106960b , < 32c4559c61652f24c9fdd5440342196fe37453bc (git)
Affected: 88fd9e5352fe05f7fe57778293aebd4cd106960b , < 4f8897bcc20b9ae44758e0572538d741ab66f0dc (git)
Affected: 88fd9e5352fe05f7fe57778293aebd4cd106960b , < a2aa95b71c9bbec793b5c5fa50f0a80d882b3e8d (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.7
Unaffected: 0 , < 5.7 (semver)
Unaffected: 5.10.120 , ≤ 5.10.* (semver)
Unaffected: 5.15.45 , ≤ 5.15.* (semver)
Unaffected: 5.17.13 , ≤ 5.17.* (semver)
Unaffected: 5.18.2 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "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"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2022-49548",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-10-01T19:37:25.966700Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-129",
                    "description": "CWE-129 Improper Validation of Array Index",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-10-01T16:49:52.390Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "kernel/bpf/trampoline.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "7f845de2863334bed4f362e95853f5e7bc323737",
                  "status": "affected",
                  "version": "88fd9e5352fe05f7fe57778293aebd4cd106960b",
                  "versionType": "git"
                },
                {
                  "lessThan": "e36452d5da6325df7c10cffc60a9e68d21e2606d",
                  "status": "affected",
                  "version": "88fd9e5352fe05f7fe57778293aebd4cd106960b",
                  "versionType": "git"
                },
                {
                  "lessThan": "32c4559c61652f24c9fdd5440342196fe37453bc",
                  "status": "affected",
                  "version": "88fd9e5352fe05f7fe57778293aebd4cd106960b",
                  "versionType": "git"
                },
                {
                  "lessThan": "4f8897bcc20b9ae44758e0572538d741ab66f0dc",
                  "status": "affected",
                  "version": "88fd9e5352fe05f7fe57778293aebd4cd106960b",
                  "versionType": "git"
                },
                {
                  "lessThan": "a2aa95b71c9bbec793b5c5fa50f0a80d882b3e8d",
                  "status": "affected",
                  "version": "88fd9e5352fe05f7fe57778293aebd4cd106960b",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "kernel/bpf/trampoline.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "5.7"
                },
                {
                  "lessThan": "5.7",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.120",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.45",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.17.*",
                  "status": "unaffected",
                  "version": "5.17.13",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.18.*",
                  "status": "unaffected",
                  "version": "5.18.2",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "5.19",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.120",
                      "versionStartIncluding": "5.7",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.45",
                      "versionStartIncluding": "5.7",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.17.13",
                      "versionStartIncluding": "5.7",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.18.2",
                      "versionStartIncluding": "5.7",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.19",
                      "versionStartIncluding": "5.7",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix potential array overflow in bpf_trampoline_get_progs()\n\nThe cnt value in the \u0027cnt \u003e= BPF_MAX_TRAMP_PROGS\u0027 check does not\ninclude BPF_TRAMP_MODIFY_RETURN bpf programs, so the number of\nthe attached BPF_TRAMP_MODIFY_RETURN bpf programs in a trampoline\ncan exceed BPF_MAX_TRAMP_PROGS.\n\nWhen this happens, the assignment \u0027*progs++ = aux-\u003eprog\u0027 in\nbpf_trampoline_get_progs() will cause progs array overflow as the\nprogs field in the bpf_tramp_progs struct can only hold at most\nBPF_MAX_TRAMP_PROGS bpf programs."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-11T19:02:04.684Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/7f845de2863334bed4f362e95853f5e7bc323737"
            },
            {
              "url": "https://git.kernel.org/stable/c/e36452d5da6325df7c10cffc60a9e68d21e2606d"
            },
            {
              "url": "https://git.kernel.org/stable/c/32c4559c61652f24c9fdd5440342196fe37453bc"
            },
            {
              "url": "https://git.kernel.org/stable/c/4f8897bcc20b9ae44758e0572538d741ab66f0dc"
            },
            {
              "url": "https://git.kernel.org/stable/c/a2aa95b71c9bbec793b5c5fa50f0a80d882b3e8d"
            }
          ],
          "title": "bpf: Fix potential array overflow in bpf_trampoline_get_progs()",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2022-49548",
        "datePublished": "2025-02-26T02:13:59.797Z",
        "dateReserved": "2025-02-26T02:08:31.590Z",
        "dateUpdated": "2026-05-11T19:02:04.684Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.


Detection rules are retrieved from Rulezet.


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.