{"api_version":"1","generated_at":"2026-08-22T21:53:01+00:00","cve":"CVE-2026-74646","urls":{"html":"https://cve.report/CVE-2026-74646","api":"https://cve.report/api/cve/CVE-2026-74646.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74646","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74646"},"summary":{"title":"misc: fastrpc: take fl->lock when moving mmaps on interrupted invoke","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: take fl->lock when moving mmaps on interrupted invoke\n\nWhen an invoke is interrupted by a signal,\nwait_for_completion_interruptible() returns -ERESTARTSYS and\nfastrpc_internal_invoke() moves every buffer from fl->mmaps onto\ncctx->invoke_interrupted_mmaps. This list_del()/list_add_tail() walk\nruns without holding fl->lock, the lock that serialises fl->mmaps in\nfastrpc_req_mmap() and fastrpc_req_munmap() everywhere else.\n\nTake fl->lock around the move, matching every other fl->mmaps accessor.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-22 16:16:37","updated_at":"2026-08-22 16:16:37"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/a902fe1f80f58a2335b6be1131866f827ec44d1a","name":"https://git.kernel.org/stable/c/a902fe1f80f58a2335b6be1131866f827ec44d1a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b85a0e91d7d6cd06a53c881a46f749cfcef416a2","name":"https://git.kernel.org/stable/c/b85a0e91d7d6cd06a53c881a46f749cfcef416a2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3f265e405e5ef85030c3777262e18bb556bc8724","name":"https://git.kernel.org/stable/c/3f265e405e5ef85030c3777262e18bb556bc8724","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/efd02f8d1a7449f15809bc18d3cd41aafea75d7e","name":"https://git.kernel.org/stable/c/efd02f8d1a7449f15809bc18d3cd41aafea75d7e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/af6345159abcbaa550518f31990d2a9558c2d369","name":"https://git.kernel.org/stable/c/af6345159abcbaa550518f31990d2a9558c2d369","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74646","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74646","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 76e8e4ace1ed2c97dba3b1370e0e105e07c572bc 3f265e405e5ef85030c3777262e18bb556bc8724 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 76e8e4ace1ed2c97dba3b1370e0e105e07c572bc a902fe1f80f58a2335b6be1131866f827ec44d1a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 76e8e4ace1ed2c97dba3b1370e0e105e07c572bc af6345159abcbaa550518f31990d2a9558c2d369 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 76e8e4ace1ed2c97dba3b1370e0e105e07c572bc efd02f8d1a7449f15809bc18d3cd41aafea75d7e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 76e8e4ace1ed2c97dba3b1370e0e105e07c572bc b85a0e91d7d6cd06a53c881a46f749cfcef416a2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.2","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.2 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.152 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.104 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.45 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.9 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/misc/fastrpc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"3f265e405e5ef85030c3777262e18bb556bc8724","status":"affected","version":"76e8e4ace1ed2c97dba3b1370e0e105e07c572bc","versionType":"git"},{"lessThan":"a902fe1f80f58a2335b6be1131866f827ec44d1a","status":"affected","version":"76e8e4ace1ed2c97dba3b1370e0e105e07c572bc","versionType":"git"},{"lessThan":"af6345159abcbaa550518f31990d2a9558c2d369","status":"affected","version":"76e8e4ace1ed2c97dba3b1370e0e105e07c572bc","versionType":"git"},{"lessThan":"efd02f8d1a7449f15809bc18d3cd41aafea75d7e","status":"affected","version":"76e8e4ace1ed2c97dba3b1370e0e105e07c572bc","versionType":"git"},{"lessThan":"b85a0e91d7d6cd06a53c881a46f749cfcef416a2","status":"affected","version":"76e8e4ace1ed2c97dba3b1370e0e105e07c572bc","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/misc/fastrpc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.2"},{"lessThan":"6.2","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.152","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.104","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.45","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.152","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.104","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.45","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.9","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"6.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: take fl->lock when moving mmaps on interrupted invoke\n\nWhen an invoke is interrupted by a signal,\nwait_for_completion_interruptible() returns -ERESTARTSYS and\nfastrpc_internal_invoke() moves every buffer from fl->mmaps onto\ncctx->invoke_interrupted_mmaps. This list_del()/list_add_tail() walk\nruns without holding fl->lock, the lock that serialises fl->mmaps in\nfastrpc_req_mmap() and fastrpc_req_munmap() everywhere else.\n\nTake fl->lock around the move, matching every other fl->mmaps accessor."}],"providerMetadata":{"dateUpdated":"2026-08-22T15:32:23.378Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/3f265e405e5ef85030c3777262e18bb556bc8724"},{"url":"https://git.kernel.org/stable/c/a902fe1f80f58a2335b6be1131866f827ec44d1a"},{"url":"https://git.kernel.org/stable/c/af6345159abcbaa550518f31990d2a9558c2d369"},{"url":"https://git.kernel.org/stable/c/efd02f8d1a7449f15809bc18d3cd41aafea75d7e"},{"url":"https://git.kernel.org/stable/c/b85a0e91d7d6cd06a53c881a46f749cfcef416a2"}],"title":"misc: fastrpc: take fl->lock when moving mmaps on interrupted invoke","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74646","datePublished":"2026-08-22T15:32:23.378Z","dateReserved":"2026-08-15T05:44:03.923Z","dateUpdated":"2026-08-22T15:32:23.378Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-22 16:16:37","lastModifiedDate":"2026-08-22 16:16:37","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74646","Ordinal":"1","Title":"misc: fastrpc: take fl->lock when moving mmaps on interrupted in","CVE":"CVE-2026-74646","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74646","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: take fl->lock when moving mmaps on interrupted invoke\n\nWhen an invoke is interrupted by a signal,\nwait_for_completion_interruptible() returns -ERESTARTSYS and\nfastrpc_internal_invoke() moves every buffer from fl->mmaps onto\ncctx->invoke_interrupted_mmaps. This list_del()/list_add_tail() walk\nruns without holding fl->lock, the lock that serialises fl->mmaps in\nfastrpc_req_mmap() and fastrpc_req_munmap() everywhere else.\n\nTake fl->lock around the move, matching every other fl->mmaps accessor.","Type":"Description","Title":"misc: fastrpc: take fl->lock when moving mmaps on interrupted in"}]}}}