{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80756","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-26T14:34:25.791Z","datePublished":"2026-09-03T08:26:34.396Z","dateUpdated":"2026-09-03T08:26:34.396Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-03T08:26:34.396Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: do not cancel a policy conversion that never started\n\nsel_write_load() calls selinux_policy_cancel() when sel_make_policy_nodes()\nfails, and that helper dereferences the outgoing policy to cancel its\nsidtab conversion. On the first policy load there is no outgoing policy:\nsecurity_load_policy() returns early for that case, before it converts\nanything, and state->policy is still NULL. A first load that fails while\nbuilding the selinuxfs tree therefore takes a NULL dereference in\nselinux_policy_cancel(), reached from a write(2) to /sys/fs/selinux/load.\n\nSkip the cancel when there is no old policy, mirroring the check\nsecurity_load_policy() already makes before it converts."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["security/selinux/ss/services.c"],"versions":[{"version":"02a52c5c8c3b8cbad0f12009cde9f36dbefb6972","lessThan":"2d29983104f06f5b0babcd5a25a0f0408272cd27","status":"affected","versionType":"git"},{"version":"02a52c5c8c3b8cbad0f12009cde9f36dbefb6972","lessThan":"a4f182f8715cb0819445f0850cd5436828f4bafc","status":"affected","versionType":"git"},{"version":"02a52c5c8c3b8cbad0f12009cde9f36dbefb6972","lessThan":"1059789ae9f99cbbe3a78e361e9c0976beb5958b","status":"affected","versionType":"git"},{"version":"02a52c5c8c3b8cbad0f12009cde9f36dbefb6972","lessThan":"1acc317d67a755a45e32419a15d70e403fa43f0e","status":"affected","versionType":"git"},{"version":"02a52c5c8c3b8cbad0f12009cde9f36dbefb6972","lessThan":"a42932c6aa33d0aac683cacdf1ec7009b955ba5d","status":"affected","versionType":"git"},{"version":"02a52c5c8c3b8cbad0f12009cde9f36dbefb6972","lessThan":"1b4ff94ae7c580c880291519fb0e3e2bd075beef","status":"affected","versionType":"git"},{"version":"02a52c5c8c3b8cbad0f12009cde9f36dbefb6972","lessThan":"219c96de5d9b6b4af7e8576ad897b774cc3ee9a7","status":"affected","versionType":"git"},{"version":"02a52c5c8c3b8cbad0f12009cde9f36dbefb6972","lessThan":"e5c0235a3c4e9eb047a16cd02323fe4ecf2f570e","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/services.c"],"versions":[{"version":"5.10","status":"affected"},{"version":"0","lessThan":"5.10","status":"unaffected","versionType":"semver"},{"version":"5.10.266","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.217","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.184","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.153","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.105","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.46","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.10","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":"5.10","versionEndExcluding":"5.10.266"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.15.217"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.1.184"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.6.153"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.12.105"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.18.46"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"7.1.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/2d29983104f06f5b0babcd5a25a0f0408272cd27"},{"url":"https://git.kernel.org/stable/c/a4f182f8715cb0819445f0850cd5436828f4bafc"},{"url":"https://git.kernel.org/stable/c/1059789ae9f99cbbe3a78e361e9c0976beb5958b"},{"url":"https://git.kernel.org/stable/c/1acc317d67a755a45e32419a15d70e403fa43f0e"},{"url":"https://git.kernel.org/stable/c/a42932c6aa33d0aac683cacdf1ec7009b955ba5d"},{"url":"https://git.kernel.org/stable/c/1b4ff94ae7c580c880291519fb0e3e2bd075beef"},{"url":"https://git.kernel.org/stable/c/219c96de5d9b6b4af7e8576ad897b774cc3ee9a7"},{"url":"https://git.kernel.org/stable/c/e5c0235a3c4e9eb047a16cd02323fe4ecf2f570e"}],"title":"selinux: do not cancel a policy conversion that never started","x_generator":{"engine":"bippy-1.2.0"}}}}