CVE-2026-89710

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-89710", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.751Z", "datePublished": "2026-09-11T19:46:25.534Z", "dateUpdated": "2026-10-19T08:51:23.214Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:51:23.214Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSv4.1: fix layout segment leak on the pnfs_layout_process() forget path\n\nWhen the server returns a new layout stateid while a valid one is still\nheld, pnfs_layout_process() calls pnfs_mark_matching_lsegs_return() on\nthe on-stack free_me list and jumps to out_forget. Segments whose\nreference count drops to zero are unlinked from lo->plh_segs and moved\nto free_me by mark_lseg_invalid(); for an idle cached segment the layout\nheader holds the only reference, so this happens on the first decrement.\n\nout_forget never drains free_me -- only the success path calls\npnfs_free_lseg_list().\n\nCommit 814b84971388 (\"pNFS/NFSv4: Fix a layout segment leak in\npnfs_layout_process()\") added the drain; commit 08bd8dbe8882\n(\"pNFS/NFSv4: Try to return invalid layout in pnfs_layout_process()\")\nremoved it while switching the destination to lo->plh_return_segs, which\nis drained elsewhere. Commit fb700ef02676 (\"NFSv4.1: Simplify layout\nreturn in pnfs_layout_process()\") switched the destination back to\nfree_me without restoring the drain.\n\nRestore the pnfs_free_lseg_list() call."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/nfs/pnfs.c"], "versions": [{"version": "fb700ef026766c95578aafc0db1b208946e7ad4f", "lessThan": "f52188118d319b47d49ee91a897f6afda4879c59", "status": "affected", "versionType": "git"}, {"version": "fb700ef026766c95578aafc0db1b208946e7ad4f", "lessThan": "ad3e41855325e55623276660ef20fbc3b8ba087f", "status": "affected", "versionType": "git"}, {"version": "fb700ef026766c95578aafc0db1b208946e7ad4f", "lessThan": "a080bb69d30f11738d753a60d1eb733d627c2093", "status": "affected", "versionType": "git"}, {"version": "fb700ef026766c95578aafc0db1b208946e7ad4f", "lessThan": "7c5b0e813efd9124760d5fd1bfc6b229f03fb1a2", "status": "affected", "versionType": "git"}, {"version": "fb700ef026766c95578aafc0db1b208946e7ad4f", "lessThan": "36e3f13bf0728f4ce11ee8904cec82a783222f62", "status": "affected", "versionType": "git"}, {"version": "fb700ef026766c95578aafc0db1b208946e7ad4f", "lessThan": "32ac1b0b7f1cfa0d1a1faf9c72f4154046101070", "status": "affected", "versionType": "git"}, {"version": "fb700ef026766c95578aafc0db1b208946e7ad4f", "lessThan": "ee5a386cfe60f3f8286de16a9db8e1a08f0bc124", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/nfs/pnfs.c"], "versions": [{"version": "5.13", "status": "affected"}, {"version": "0", "lessThan": "5.13", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.221", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.109", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "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": "5.13", "versionEndExcluding": "5.15.221"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.1.188"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.12.109"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.18.50"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "7.2.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f52188118d319b47d49ee91a897f6afda4879c59"}, {"url": "https://git.kernel.org/stable/c/ad3e41855325e55623276660ef20fbc3b8ba087f"}, {"url": "https://git.kernel.org/stable/c/a080bb69d30f11738d753a60d1eb733d627c2093"}, {"url": "https://git.kernel.org/stable/c/7c5b0e813efd9124760d5fd1bfc6b229f03fb1a2"}, {"url": "https://git.kernel.org/stable/c/36e3f13bf0728f4ce11ee8904cec82a783222f62"}, {"url": "https://git.kernel.org/stable/c/32ac1b0b7f1cfa0d1a1faf9c72f4154046101070"}, {"url": "https://git.kernel.org/stable/c/ee5a386cfe60f3f8286de16a9db8e1a08f0bc124"}], "title": "NFSv4.1: fix layout segment leak on the pnfs_layout_process() forget path", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/nfs/pnfs.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "f52188118d319b47d49ee91a897f6afda4879c59", "status": "affected", "version": "fb700ef026766c95578aafc0db1b208946e7ad4f", "versionType": "git"}, {"lessThan": "ad3e41855325e55623276660ef20fbc3b8ba087f", "status": "affected", "version": "fb700ef026766c95578aafc0db1b208946e7ad4f", "versionType": "git"}, {"lessThan": "a080bb69d30f11738d753a60d1eb733d627c2093", "status": "affected", "version": "fb700ef026766c95578aafc0db1b208946e7ad4f", "versionType": "git"}, {"lessThan": "7c5b0e813efd9124760d5fd1bfc6b229f03fb1a2", "status": "affected", "version": "fb700ef026766c95578aafc0db1b208946e7ad4f", "versionType": "git"}, {"lessThan": "36e3f13bf0728f4ce11ee8904cec82a783222f62", "status": "affected", "version": "fb700ef026766c95578aafc0db1b208946e7ad4f", "versionType": "git"}, {"lessThan": "32ac1b0b7f1cfa0d1a1faf9c72f4154046101070", "status": "affected", "version": "fb700ef026766c95578aafc0db1b208946e7ad4f", "versionType": "git"}, {"lessThan": "ee5a386cfe60f3f8286de16a9db8e1a08f0bc124", "status": "affected", "version": "fb700ef026766c95578aafc0db1b208946e7ad4f", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/nfs/pnfs.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.13"}, {"lessThan": "5.13", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.221", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.188", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.157", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.109", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.50", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.4", "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\nNFSv4.1: fix layout segment leak on the pnfs_layout_process() forget path\n\nWhen the server returns a new layout stateid while a valid one is still\nheld, pnfs_layout_process() calls pnfs_mark_matching_lsegs_return() on\nthe on-stack free_me list and jumps to out_forget. Segments whose\nreference count drops to zero are unlinked from lo->plh_segs and moved\nto free_me by mark_lseg_invalid(); for an idle cached segment the layout\nheader holds the only reference, so this happens on the first decrement.\n\nout_forget never drains free_me -- only the success path calls\npnfs_free_lseg_list().\n\nCommit 814b84971388 (\"pNFS/NFSv4: Fix a layout segment leak in\npnfs_layout_process()\") added the drain; commit 08bd8dbe8882\n(\"pNFS/NFSv4: Try to return invalid layout in pnfs_layout_process()\")\nremoved it while switching the destination to lo->plh_return_segs, which\nis drained elsewhere. Commit fb700ef02676 (\"NFSv4.1: Simplify layout\nreturn in pnfs_layout_process()\") switched the destination back to\nfree_me without restoring the drain.\n\nRestore the pnfs_free_lseg_list() call."}], "id": "CVE-2026-89710", "lastModified": "2026-10-19T09:18:09.850", "metrics": {}, "published": "2026-09-11T20:19:58.380", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/32ac1b0b7f1cfa0d1a1faf9c72f4154046101070"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/36e3f13bf0728f4ce11ee8904cec82a783222f62"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7c5b0e813efd9124760d5fd1bfc6b229f03fb1a2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a080bb69d30f11738d753a60d1eb733d627c2093"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ad3e41855325e55623276660ef20fbc3b8ba087f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ee5a386cfe60f3f8286de16a9db8e1a08f0bc124"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f52188118d319b47d49ee91a897f6afda4879c59"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux Kernel: NFSv4.1 memory leak can lead to Denial of Service", "id": "2532139", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532139"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["A flaw was found in the Linux kernel's NFSv4.1 implementation. When a server returns a new layout state identifier while an existing one is still active, the pnfs_layout_process() function fails to properly release memory associated with layout segments. This oversight leads to a memory leak, which could eventually result in a Denial of Service (DoS) condition for affected systems."], "name": "CVE-2026-89710", "public_date": "2026-09-11T19:46:25Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-89710\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-89710\nhttps://git.kernel.org/stable/c/32ac1b0b7f1cfa0d1a1faf9c72f4154046101070\nhttps://git.kernel.org/stable/c/36e3f13bf0728f4ce11ee8904cec82a783222f62\nhttps://git.kernel.org/stable/c/7c5b0e813efd9124760d5fd1bfc6b229f03fb1a2\nhttps://git.kernel.org/stable/c/ee5a386cfe60f3f8286de16a9db8e1a08f0bc124"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[fb700ef026766c95578aafc0db1b208946e7ad4f,7c5b0e813efd9124760d5fd1bfc6b229f03fb1a2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[fb700ef026766c95578aafc0db1b208946e7ad4f,36e3f13bf0728f4ce11ee8904cec82a783222f62)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[fb700ef026766c95578aafc0db1b208946e7ad4f,32ac1b0b7f1cfa0d1a1faf9c72f4154046101070)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[fb700ef026766c95578aafc0db1b208946e7ad4f,ee5a386cfe60f3f8286de16a9db8e1a08f0bc124)"}}], "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": "5.13"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.13)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.109,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.50,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.4,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "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": "2026-09-12T07:00:14.273755+00:00", "updated": "2026-09-15T20:45:20.768131+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}