CVE-2026-80857

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80857", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.797Z", "datePublished": "2026-09-04T15:55:10.641Z", "dateUpdated": "2026-10-19T08:44:51.239Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:44:51.239Z"}, "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/fuse/dev.c"], "versions": [{"version": "0c7fca880a40a209a9c92be14143996d14b93ff6", "lessThan": "a8bbb2a60513bf322170903c21462f0bf4f62be2", "status": "affected", "versionType": "git"}, {"version": "204aa22a686bfee48daca7db620c1e017615f2ff", "lessThan": "715cb86e33cda43f5224cdc3fd5610c0b6a46f7a", "status": "affected", "versionType": "git"}, {"version": "204aa22a686bfee48daca7db620c1e017615f2ff", "lessThan": "64b0b5cacbd2fea88001464cb712c9dfc795b26e", "status": "affected", "versionType": "git"}, {"version": "300e812b882a174dca675d8028684001ad5826bc", "status": "affected", "versionType": "git"}, {"version": "6.18.25", "lessThan": "6.18.50", "status": "affected", "versionType": "semver"}, {"version": "7.0.2", "lessThan": "7.1", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/fuse/dev.c"], "versions": [{"version": "7.1", "status": "affected"}, {"version": "0", "lessThan": "7.1", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.3", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "6.18.25", "versionEndExcluding": "6.18.50"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.1", "versionEndExcluding": "7.2.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.1", "versionEndExcluding": "7.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0.2"}]}]}], "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"}}}}

{}

{"affected": [{"affectedData": [{"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", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-80857", "lastModified": "2026-10-19T09:17:21.393", "metrics": {}, "published": "2026-09-04T16:18:14.810", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/64b0b5cacbd2fea88001464cb712c9dfc795b26e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/715cb86e33cda43f5224cdc3fd5610c0b6a46f7a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a8bbb2a60513bf322170903c21462f0bf4f62be2"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[204aa22a686bfee48daca7db620c1e017615f2ff,715cb86e33cda43f5224cdc3fd5610c0b6a46f7a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[204aa22a686bfee48daca7db620c1e017615f2ff,64b0b5cacbd2fea88001464cb712c9dfc795b26e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "0c7fca880a40a209a9c92be14143996d14b93ff6"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "300e812b882a174dca675d8028684001ad5826bc"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.18.25,6.19)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.0.2,7.1)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7.1"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,7.1)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.3,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-04T21:00:13.104987+00:00", "updated": "2026-09-05T02:45:16.988508+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-416"]}