CVE-2026-80755

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80755", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.790Z", "datePublished": "2026-09-03T08:26:33.797Z", "dateUpdated": "2026-10-30T12:31:05.421Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:31:05.421Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: reject a permission value exceeding the class permission count\n\nperm_read() bounds a permission value by SEL_VEC_MAX but never by the\nnprim of the owning class or common, which is taken verbatim from the\npolicy image. security_get_permissions() then writes perms[value - 1]\ninto an nprim-sized kcalloc() array, so a class declaring fewer\npermissions than its largest permission value drives an out-of-bounds\nheap write. The top-level symbol tables are validated this way; the\nnested per-class permission table is not.\n\nReject a permission whose value exceeds nprim, which is already set when\nperm_read() runs. Well-formed policies are unaffected.\n\n[PM: tweak comment for line length]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["security/selinux/ss/policydb.c"], "versions": [{"version": "55fcf09b3fe4325c9395ebbb0322a547a157ebc7", "lessThan": "766051751cfb90fc9c29c30c2943b0f24eda9594", "status": "affected", "versionType": "git"}, {"version": "55fcf09b3fe4325c9395ebbb0322a547a157ebc7", "lessThan": "9a1bd9fd1326655dfc31b18ca92ea8433cb31204", "status": "affected", "versionType": "git"}, {"version": "55fcf09b3fe4325c9395ebbb0322a547a157ebc7", "lessThan": "6c2ab7c4549f4f2305848df834e784651dbf1676", "status": "affected", "versionType": "git"}, {"version": "55fcf09b3fe4325c9395ebbb0322a547a157ebc7", "lessThan": "dfc59a062c386d3d4415ecdab781065a645f33cc", "status": "affected", "versionType": "git"}, {"version": "55fcf09b3fe4325c9395ebbb0322a547a157ebc7", "lessThan": "a7f3d4f22d920dc3c7d75f02ece0f7bf2c58437e", "status": "affected", "versionType": "git"}, {"version": "55fcf09b3fe4325c9395ebbb0322a547a157ebc7", "lessThan": "d14b5d0e97fccd27974fedc03b903408872907fd", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["security/selinux/ss/policydb.c"], "versions": [{"version": "2.6.23", "status": "affected"}, {"version": "0", "lessThan": "2.6.23", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.108", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.49", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.13", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.23", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.23", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.23", "versionEndExcluding": "6.12.108"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.23", "versionEndExcluding": "6.18.49"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.23", "versionEndExcluding": "7.1.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.23", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/766051751cfb90fc9c29c30c2943b0f24eda9594"}, {"url": "https://git.kernel.org/stable/c/9a1bd9fd1326655dfc31b18ca92ea8433cb31204"}, {"url": "https://git.kernel.org/stable/c/6c2ab7c4549f4f2305848df834e784651dbf1676"}, {"url": "https://git.kernel.org/stable/c/dfc59a062c386d3d4415ecdab781065a645f33cc"}, {"url": "https://git.kernel.org/stable/c/a7f3d4f22d920dc3c7d75f02ece0f7bf2c58437e"}, {"url": "https://git.kernel.org/stable/c/d14b5d0e97fccd27974fedc03b903408872907fd"}], "title": "selinux: reject a permission value exceeding the class permission count", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["security/selinux/ss/policydb.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "766051751cfb90fc9c29c30c2943b0f24eda9594", "status": "affected", "version": "55fcf09b3fe4325c9395ebbb0322a547a157ebc7", "versionType": "git"}, {"lessThan": "9a1bd9fd1326655dfc31b18ca92ea8433cb31204", "status": "affected", "version": "55fcf09b3fe4325c9395ebbb0322a547a157ebc7", "versionType": "git"}, {"lessThan": "6c2ab7c4549f4f2305848df834e784651dbf1676", "status": "affected", "version": "55fcf09b3fe4325c9395ebbb0322a547a157ebc7", "versionType": "git"}, {"lessThan": "dfc59a062c386d3d4415ecdab781065a645f33cc", "status": "affected", "version": "55fcf09b3fe4325c9395ebbb0322a547a157ebc7", "versionType": "git"}, {"lessThan": "a7f3d4f22d920dc3c7d75f02ece0f7bf2c58437e", "status": "affected", "version": "55fcf09b3fe4325c9395ebbb0322a547a157ebc7", "versionType": "git"}, {"lessThan": "d14b5d0e97fccd27974fedc03b903408872907fd", "status": "affected", "version": "55fcf09b3fe4325c9395ebbb0322a547a157ebc7", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["security/selinux/ss/policydb.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.23"}, {"lessThan": "2.6.23", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.108", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.49", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.13", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: reject a permission value exceeding the class permission count\n\nperm_read() bounds a permission value by SEL_VEC_MAX but never by the\nnprim of the owning class or common, which is taken verbatim from the\npolicy image. security_get_permissions() then writes perms[value - 1]\ninto an nprim-sized kcalloc() array, so a class declaring fewer\npermissions than its largest permission value drives an out-of-bounds\nheap write. The top-level symbol tables are validated this way; the\nnested per-class permission table is not.\n\nReject a permission whose value exceeds nprim, which is already set when\nperm_read() runs. Well-formed policies are unaffected.\n\n[PM: tweak comment for line length]"}], "id": "CVE-2026-80755", "lastModified": "2026-10-30T13:20:11.360", "metrics": {}, "published": "2026-09-03T13:06:15.247", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6c2ab7c4549f4f2305848df834e784651dbf1676"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/766051751cfb90fc9c29c30c2943b0f24eda9594"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9a1bd9fd1326655dfc31b18ca92ea8433cb31204"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a7f3d4f22d920dc3c7d75f02ece0f7bf2c58437e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d14b5d0e97fccd27974fedc03b903408872907fd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/dfc59a062c386d3d4415ecdab781065a645f33cc"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[55fcf09b3fe4325c9395ebbb0322a547a157ebc7,6c2ab7c4549f4f2305848df834e784651dbf1676)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[55fcf09b3fe4325c9395ebbb0322a547a157ebc7,dfc59a062c386d3d4415ecdab781065a645f33cc)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[55fcf09b3fe4325c9395ebbb0322a547a157ebc7,a7f3d4f22d920dc3c7d75f02ece0f7bf2c58437e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[55fcf09b3fe4325c9395ebbb0322a547a157ebc7,d14b5d0e97fccd27974fedc03b903408872907fd)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.23"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.23)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.108,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.49,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.13,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-03T13:00:04.260863+00:00", "updated": "2026-09-03T13:00:04.829965+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-122"]}