CVE-2022-48740 (GCVE-0-2022-48740)

Vulnerability from cvelistv5 – Published: 2024-06-20 11:13 – Updated: 2026-05-11 18:46
VLAI
Title
selinux: fix double free of cond_list on error paths
Summary
In the Linux kernel, the following vulnerability has been resolved: selinux: fix double free of cond_list on error paths On error path from cond_read_list() and duplicate_policydb_cond_list() the cond_list_destroy() gets called a second time in caller functions, resulting in NULL pointer deref. Fix this by resetting the cond_list_len to 0 in cond_list_destroy(), making subsequent calls a noop. Also consistently reset the cond_list pointer to NULL after freeing. [PM: fix line lengths in the description]
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-20 16:02 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 60abd3181db29ea81742106cc0ac2e27fd05b418 , < f446089a268c8fc6908488e991d28a9b936293db (git)
Affected: 60abd3181db29ea81742106cc0ac2e27fd05b418 , < 70caa32e6d81f45f0702070c0e4dfe945e92fbd7 (git)
Affected: 60abd3181db29ea81742106cc0ac2e27fd05b418 , < 7ed9cbf7ac0d4ed86b356e1b944304ae9ee450d4 (git)
Affected: 60abd3181db29ea81742106cc0ac2e27fd05b418 , < 186edf7e368c40d06cf727a1ad14698ea67b74ad (git)
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Linux Linux Affected: 5.7
Unaffected: 0 , < 5.7 (semver)
Unaffected: 5.10.99 , ≤ 5.10.* (semver)
Unaffected: 5.15.22 , ≤ 5.15.* (semver)
Unaffected: 5.16.8 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)
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                  "versionType": "git"
                },
                {
                  "lessThan": "7ed9cbf7ac0d4ed86b356e1b944304ae9ee450d4",
                  "status": "affected",
                  "version": "60abd3181db29ea81742106cc0ac2e27fd05b418",
                  "versionType": "git"
                },
                {
                  "lessThan": "186edf7e368c40d06cf727a1ad14698ea67b74ad",
                  "status": "affected",
                  "version": "60abd3181db29ea81742106cc0ac2e27fd05b418",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "security/selinux/ss/conditional.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": "5.10.99",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.22",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.16.*",
                  "status": "unaffected",
                  "version": "5.16.8",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "5.17",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.99",
                      "versionStartIncluding": "5.7",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.22",
                      "versionStartIncluding": "5.7",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.16.8",
                      "versionStartIncluding": "5.7",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.17",
                      "versionStartIncluding": "5.7",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: fix double free of cond_list on error paths\n\nOn error path from cond_read_list() and duplicate_policydb_cond_list()\nthe cond_list_destroy() gets called a second time in caller functions,\nresulting in NULL pointer deref.  Fix this by resetting the\ncond_list_len to 0 in cond_list_destroy(), making subsequent calls a\nnoop.\n\nAlso consistently reset the cond_list pointer to NULL after freeing.\n\n[PM: fix line lengths in the description]"
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-11T18:46:00.420Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/f446089a268c8fc6908488e991d28a9b936293db"
            },
            {
              "url": "https://git.kernel.org/stable/c/70caa32e6d81f45f0702070c0e4dfe945e92fbd7"
            },
            {
              "url": "https://git.kernel.org/stable/c/7ed9cbf7ac0d4ed86b356e1b944304ae9ee450d4"
            },
            {
              "url": "https://git.kernel.org/stable/c/186edf7e368c40d06cf727a1ad14698ea67b74ad"
            }
          ],
          "title": "selinux: fix double free of cond_list on error paths",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2022-48740",
        "datePublished": "2024-06-20T11:13:25.346Z",
        "dateReserved": "2024-06-20T11:09:39.054Z",
        "dateUpdated": "2026-05-11T18:46:00.420Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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