{
    "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": "2026-09-03T08:26:33.797Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-09-03T08:26:33.797Z"
            },
            "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": "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": "6.12.108",
                            "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": "6.12.108"
                                },
                                {
                                    "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/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"
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    }
}