{"id":"CVE-2025-68805","state":"PUBLISHED","title":"fuse: fix io-uring list corruption for terminated non-committed requests","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfuse: fix io-uring list corruption for terminated non-committed requests\n\nWhen a request is terminated before it has been committed, the request\nis not removed from the queue's list. This leaves a dangling list entry\nthat leads to list corruption and use-after-free issues.\n\nRemove the request from the queue's list for terminated non-committed\nrequests.","publishedAt":"2026-01-13T15:29:13.119Z","updatedAt":"2026-08-05T12:11:37.322Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c090c8abae4b6b77a1bee116aa6c385456ebef96","status":"affected","lessThan":"a6d1f1ace16d0e777a85f84267160052d3499b6e","versionType":"git"},{"version":"c090c8abae4b6b77a1bee116aa6c385456ebef96","status":"affected","lessThan":"95c39eef7c2b666026c69ab5b30471da94ea2874","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/fuse/dev_uring.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.14","versionType":"semver"},{"version":"6.18.3","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/fuse/dev_uring.c"]}],"references":["https://git.kernel.org/stable/c/a6d1f1ace16d0e777a85f84267160052d3499b6e","https://git.kernel.org/stable/c/95c39eef7c2b666026c69ab5b30471da94ea2874"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:56.034Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/68xxx/CVE-2025-68805.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-68805","state":"PUBLISHED","datePublished":"2026-01-13T15:29:13.119Z","dateUpdated":"2026-08-05T12:11:37.322Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-24T10:30:51.045Z"},"containers":{"cna":{"title":"fuse: fix io-uring list corruption for terminated non-committed requests","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfuse: fix io-uring list corruption for terminated non-committed requests\n\nWhen a request is terminated before it has been committed, the request\nis not removed from the queue's list. This leaves a dangling list entry\nthat leads to list corruption and use-after-free issues.\n\nRemove the request from the queue's list for terminated non-committed\nrequests."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c090c8abae4b6b77a1bee116aa6c385456ebef96","status":"affected","lessThan":"a6d1f1ace16d0e777a85f84267160052d3499b6e","versionType":"git"},{"version":"c090c8abae4b6b77a1bee116aa6c385456ebef96","status":"affected","lessThan":"95c39eef7c2b666026c69ab5b30471da94ea2874","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/fuse/dev_uring.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.14","versionType":"semver"},{"version":"6.18.3","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/fuse/dev_uring.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a6d1f1ace16d0e777a85f84267160052d3499b6e"},{"url":"https://git.kernel.org/stable/c/95c39eef7c2b666026c69ab5b30471da94ea2874"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - The vulnerability is reached through local FUSE filesystem operations and io_uring commands on a connected /dev/fuse descriptor; no remote protocol reaches this path.\nAC:L - Once FUSE-over-io_uring is enabled, a malicious daemon controls buffer validity, request generation, and commit IDs, allowing it to trigger the dangling entry without winning an uncontrolled race.\nPR:L - FUSE supports user-namespace mounts, and namespace CAP_SYS_ADMIN is sufficient where /dev/fuse is accessible. No capability in the initial user namespace is required.\nUI:N - The attacker can create and operate the FUSE mount, invalidate the registered buffers, and submit subsequent commands without action by another user.\nS:U - Exploitation compromises the host kernel, which is the same security authority in which the vulnerable code executes.\nC:H - The dangling processing-list entry produces a kernel use-after-free whose reclaimed object can be manipulated to disclose arbitrary kernel memory.\nI:H - Deleting or moving the stale list node performs writes through freed or attacker-influenced list pointers, enabling kernel heap corruption and potential control-flow hijacking.\nA:H - The corrupted list and freed request can cause invalid kernel accesses, infinite traversal under a spinlock, an oops, or a kernel panic."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-05T12:11:37.322Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"6.18.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"6.19"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}