{"id":"CVE-2026-92486","state":"PUBLISHED","title":"bpf: Fix CFI mismatch in task work callback","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix CFI mismatch in task work callback\n\nBPF subprograms use the bpf_callback_t ABI, but task work invokes the\ncallback through a three-argument function pointer. This trips kCFI.\n\nStore and invoke the callback as bpf_callback_t.","publishedAt":"2026-09-17T16:10:01.654Z","updatedAt":"2026-10-19T09:03:52.858Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"38aa7003e369802f81a078f6673d10d97013f04f","status":"affected","lessThan":"85a33c910edc3651f68b17ae3c597c012545958f","versionType":"git"},{"version":"38aa7003e369802f81a078f6673d10d97013f04f","status":"affected","lessThan":"a2cbab47f44e9ea8c5a161ecba1b6bb8535771eb","versionType":"git"},{"version":"38aa7003e369802f81a078f6673d10d97013f04f","status":"affected","lessThan":"2805abd089576799b15092949420e3f8ba97fabd","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/helpers.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.18","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/helpers.c"]}],"references":["https://git.kernel.org/stable/c/85a33c910edc3651f68b17ae3c597c012545958f","https://git.kernel.org/stable/c/a2cbab47f44e9ea8c5a161ecba1b6bb8535771eb","https://git.kernel.org/stable/c/2805abd089576799b15092949420e3f8ba97fabd"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/92xxx/CVE-2026-92486.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-92486","state":"PUBLISHED","datePublished":"2026-09-17T16:10:01.654Z","dateUpdated":"2026-10-19T09:03:52.858Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-16T12:21:13.870Z"},"containers":{"cna":{"title":"bpf: Fix CFI mismatch in task work callback","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix CFI mismatch in task work callback\n\nBPF subprograms use the bpf_callback_t ABI, but task work invokes the\ncallback through a three-argument function pointer. This trips kCFI.\n\nStore and invoke the callback as bpf_callback_t."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"38aa7003e369802f81a078f6673d10d97013f04f","status":"affected","lessThan":"85a33c910edc3651f68b17ae3c597c012545958f","versionType":"git"},{"version":"38aa7003e369802f81a078f6673d10d97013f04f","status":"affected","lessThan":"a2cbab47f44e9ea8c5a161ecba1b6bb8535771eb","versionType":"git"},{"version":"38aa7003e369802f81a078f6673d10d97013f04f","status":"affected","lessThan":"2805abd089576799b15092949420e3f8ba97fabd","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/helpers.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.18","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/helpers.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/85a33c910edc3651f68b17ae3c597c012545958f"},{"url":"https://git.kernel.org/stable/c/a2cbab47f44e9ea8c5a161ecba1b6bb8535771eb"},{"url":"https://git.kernel.org/stable/c/2805abd089576799b15092949420e3f8ba97fabd"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:03:52.858Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}