{"api_version":"1","generated_at":"2026-09-11T23:53:31+00:00","cve":"CVE-2026-80857","urls":{"html":"https://cve.report/CVE-2026-80857","api":"https://cve.report/api/cve/CVE-2026-80857.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80857","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80857"},"summary":{"title":"fuse: wait for FR_FINISHED on abort_on_kill to prevent use-after-free","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfuse: wait for FR_FINISHED on abort_on_kill to prevent use-after-free\n\nThe abort_on_kill path in request_wait_answer() calls fuse_abort_conn()\nand returns without waiting for FR_FINISHED.  If fuse_dev_do_write() is\nconcurrently processing the same request (FR_LOCKED set), the caller\nfrees req->args while it is still being accessed, causing a\nuse-after-free.\n\nFix this by jumping to the existing wait_event(FR_FINISHED) instead of\nreturning early.  The wait will not hang because fuse_abort_conn()\nensures all requests are ended.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-04 16:18:14","updated_at":"2026-09-07 16:17:30"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/64b0b5cacbd2fea88001464cb712c9dfc795b26e","name":"https://git.kernel.org/stable/c/64b0b5cacbd2fea88001464cb712c9dfc795b26e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a8bbb2a60513bf322170903c21462f0bf4f62be2","name":"https://git.kernel.org/stable/c/a8bbb2a60513bf322170903c21462f0bf4f62be2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/715cb86e33cda43f5224cdc3fd5610c0b6a46f7a","name":"https://git.kernel.org/stable/c/715cb86e33cda43f5224cdc3fd5610c0b6a46f7a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80857","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80857","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0c7fca880a40a209a9c92be14143996d14b93ff6 a8bbb2a60513bf322170903c21462f0bf4f62be2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 204aa22a686bfee48daca7db620c1e017615f2ff 715cb86e33cda43f5224cdc3fd5610c0b6a46f7a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 204aa22a686bfee48daca7db620c1e017615f2ff 64b0b5cacbd2fea88001464cb712c9dfc795b26e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 300e812b882a174dca675d8028684001ad5826bc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.18.25 6.18.50 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7.0.2 7.1 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7.1","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.50 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.3 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"80857","cve":"CVE-2026-80857","epss":"0.001450000","percentile":"0.040720000","score_date":"2026-09-07","updated_at":"2026-09-08 00:05:25"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/fuse/dev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a8bbb2a60513bf322170903c21462f0bf4f62be2","status":"affected","version":"0c7fca880a40a209a9c92be14143996d14b93ff6","versionType":"git"},{"lessThan":"715cb86e33cda43f5224cdc3fd5610c0b6a46f7a","status":"affected","version":"204aa22a686bfee48daca7db620c1e017615f2ff","versionType":"git"},{"lessThan":"64b0b5cacbd2fea88001464cb712c9dfc795b26e","status":"affected","version":"204aa22a686bfee48daca7db620c1e017615f2ff","versionType":"git"},{"status":"affected","version":"300e812b882a174dca675d8028684001ad5826bc","versionType":"git"},{"lessThan":"6.18.50","status":"affected","version":"6.18.25","versionType":"semver"},{"lessThan":"7.1","status":"affected","version":"7.0.2","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/fuse/dev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"7.1"},{"lessThan":"7.1","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.50","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.3","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.50","versionStartIncluding":"6.18.25","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.3","versionStartIncluding":"7.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"7.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.0.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfuse: wait for FR_FINISHED on abort_on_kill to prevent use-after-free\n\nThe abort_on_kill path in request_wait_answer() calls fuse_abort_conn()\nand returns without waiting for FR_FINISHED.  If fuse_dev_do_write() is\nconcurrently processing the same request (FR_LOCKED set), the caller\nfrees req->args while it is still being accessed, causing a\nuse-after-free.\n\nFix this by jumping to the existing wait_event(FR_FINISHED) instead of\nreturning early.  The wait will not hang because fuse_abort_conn()\nensures all requests are ended."}],"providerMetadata":{"dateUpdated":"2026-09-07T15:45:14.159Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/a8bbb2a60513bf322170903c21462f0bf4f62be2"},{"url":"https://git.kernel.org/stable/c/715cb86e33cda43f5224cdc3fd5610c0b6a46f7a"},{"url":"https://git.kernel.org/stable/c/64b0b5cacbd2fea88001464cb712c9dfc795b26e"}],"title":"fuse: wait for FR_FINISHED on abort_on_kill to prevent use-after-free","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-80857","datePublished":"2026-09-04T15:55:10.641Z","dateReserved":"2026-08-26T14:34:25.797Z","dateUpdated":"2026-09-07T15:45:14.159Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-04 16:18:14","lastModifiedDate":"2026-09-07 16:17:30","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"80857","Ordinal":"1","Title":"fuse: wait for FR_FINISHED on abort_on_kill to prevent use-after","CVE":"CVE-2026-80857","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80857","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nfuse: wait for FR_FINISHED on abort_on_kill to prevent use-after-free\n\nThe abort_on_kill path in request_wait_answer() calls fuse_abort_conn()\nand returns without waiting for FR_FINISHED.  If fuse_dev_do_write() is\nconcurrently processing the same request (FR_LOCKED set), the caller\nfrees req->args while it is still being accessed, causing a\nuse-after-free.\n\nFix this by jumping to the existing wait_event(FR_FINISHED) instead of\nreturning early.  The wait will not hang because fuse_abort_conn()\nensures all requests are ended.","Type":"Description","Title":"fuse: wait for FR_FINISHED on abort_on_kill to prevent use-after"}]}}}