{"id":"CVE-2026-80757","state":"PUBLISHED","title":"selinux: reject a class permission count below its inherited common","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: reject a class permission count below its inherited common\n\nsecurity_get_permissions() maps an inherited common's permissions into\nan array sized by the class's own permissions.nprim, but class_read()\ntakes that nprim verbatim from the policy image and never checks that it\ncovers the common.  A class that inherits a common of N permissions while\ndeclaring a smaller nprim is accepted, and on load the common's\npermissions are written past the class-sized array -- an out-of-bounds\nheap write.\n\nReject a class whose permission count is below its inherited common's.\nWell-formed policies, where the class count already includes the\ninherited permissions, are unaffected.","publishedAt":"2026-09-03T08:26:35.005Z","updatedAt":"2026-09-03T08:26:35.005Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","status":"affected","lessThan":"2002ff745db64ac83ee1bb9ff78196d2d68bfdb3","versionType":"git"},{"version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","status":"affected","lessThan":"38d91446630a20ce8c2a981810deea81fd61a3b5","versionType":"git"},{"version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","status":"affected","lessThan":"638213f2e6ea52c06a25861616781338d154db35","versionType":"git"},{"version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","status":"affected","lessThan":"2b7ffd7921fcbfe408fb7b372e47454e45b1e6a7","versionType":"git"},{"version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","status":"affected","lessThan":"a63011c009ea79439b800a05602b880eb4adbb05","versionType":"git"},{"version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","status":"affected","lessThan":"acd5b09be98fd38b7392307880156fb0452a7276","versionType":"git"},{"version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","status":"affected","lessThan":"1b995966c3ae5244751bdaee9bfe7e17567d4fbe","versionType":"git"},{"version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","status":"affected","lessThan":"9a82dcd98b6e6e11cfd162410967951f12152528","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["security/selinux/ss/policydb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.23","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.23","versionType":"semver"},{"version":"5.10.266","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.217","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.184","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.153","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.105","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.46","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.10","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["security/selinux/ss/policydb.c"]}],"references":["https://git.kernel.org/stable/c/2002ff745db64ac83ee1bb9ff78196d2d68bfdb3","https://git.kernel.org/stable/c/38d91446630a20ce8c2a981810deea81fd61a3b5","https://git.kernel.org/stable/c/638213f2e6ea52c06a25861616781338d154db35","https://git.kernel.org/stable/c/2b7ffd7921fcbfe408fb7b372e47454e45b1e6a7","https://git.kernel.org/stable/c/a63011c009ea79439b800a05602b880eb4adbb05","https://git.kernel.org/stable/c/acd5b09be98fd38b7392307880156fb0452a7276","https://git.kernel.org/stable/c/1b995966c3ae5244751bdaee9bfe7e17567d4fbe","https://git.kernel.org/stable/c/9a82dcd98b6e6e11cfd162410967951f12152528"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/80xxx/CVE-2026-80757.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80757","state":"PUBLISHED","datePublished":"2026-09-03T08:26:35.005Z","dateUpdated":"2026-09-03T08:26:35.005Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-26T14:34:25.791Z"},"containers":{"cna":{"title":"selinux: reject a class permission count below its inherited common","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: reject a class permission count below its inherited common\n\nsecurity_get_permissions() maps an inherited common's permissions into\nan array sized by the class's own permissions.nprim, but class_read()\ntakes that nprim verbatim from the policy image and never checks that it\ncovers the common.  A class that inherits a common of N permissions while\ndeclaring a smaller nprim is accepted, and on load the common's\npermissions are written past the class-sized array -- an out-of-bounds\nheap write.\n\nReject a class whose permission count is below its inherited common's.\nWell-formed policies, where the class count already includes the\ninherited permissions, are unaffected."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","status":"affected","lessThan":"2002ff745db64ac83ee1bb9ff78196d2d68bfdb3","versionType":"git"},{"version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","status":"affected","lessThan":"38d91446630a20ce8c2a981810deea81fd61a3b5","versionType":"git"},{"version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","status":"affected","lessThan":"638213f2e6ea52c06a25861616781338d154db35","versionType":"git"},{"version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","status":"affected","lessThan":"2b7ffd7921fcbfe408fb7b372e47454e45b1e6a7","versionType":"git"},{"version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","status":"affected","lessThan":"a63011c009ea79439b800a05602b880eb4adbb05","versionType":"git"},{"version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","status":"affected","lessThan":"acd5b09be98fd38b7392307880156fb0452a7276","versionType":"git"},{"version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","status":"affected","lessThan":"1b995966c3ae5244751bdaee9bfe7e17567d4fbe","versionType":"git"},{"version":"55fcf09b3fe4325c9395ebbb0322a547a157ebc7","status":"affected","lessThan":"9a82dcd98b6e6e11cfd162410967951f12152528","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["security/selinux/ss/policydb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.23","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.23","versionType":"semver"},{"version":"5.10.266","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.217","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.184","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.153","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.105","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.46","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.10","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["security/selinux/ss/policydb.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/2002ff745db64ac83ee1bb9ff78196d2d68bfdb3"},{"url":"https://git.kernel.org/stable/c/38d91446630a20ce8c2a981810deea81fd61a3b5"},{"url":"https://git.kernel.org/stable/c/638213f2e6ea52c06a25861616781338d154db35"},{"url":"https://git.kernel.org/stable/c/2b7ffd7921fcbfe408fb7b372e47454e45b1e6a7"},{"url":"https://git.kernel.org/stable/c/a63011c009ea79439b800a05602b880eb4adbb05"},{"url":"https://git.kernel.org/stable/c/acd5b09be98fd38b7392307880156fb0452a7276"},{"url":"https://git.kernel.org/stable/c/1b995966c3ae5244751bdaee9bfe7e17567d4fbe"},{"url":"https://git.kernel.org/stable/c/9a82dcd98b6e6e11cfd162410967951f12152528"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-09-03T08:26:35.005Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.23","versionEndExcluding":"5.10.266"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.23","versionEndExcluding":"5.15.217"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.23","versionEndExcluding":"6.1.184"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.23","versionEndExcluding":"6.6.153"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.23","versionEndExcluding":"6.12.105"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.23","versionEndExcluding":"6.18.46"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.23","versionEndExcluding":"7.1.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.23","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}