{"id":"CVE-2026-89710","revision":"4b52a323b41641e597303e78b014a8d6","records":[{"revision":"4b52a323b41641e597303e78b014a8d6","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89710","aliases":[],"title":"NFSv4.1: fix layout segment leak on the pnfs_layout_process() forget path","description":"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.","state":0,"publishedAt":"2026-09-11T19:46:25.534+00:00","modifiedAt":"2026-10-19T08:51:23.214+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/nfs/pnfs.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"fb700ef026766c95578aafc0db1b208946e7ad4f\",\n                            \"lessThan\": \"f52188118d319b47d49ee91a897f6afda4879c59\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fb700ef026766c95578aafc0db1b208946e7ad4f\",\n                            \"lessThan\": \"ad3e41855325e55623276660ef20fbc3b8ba087f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fb700ef026766c95578aafc0db1b208946e7ad4f\",\n                            \"lessThan\": \"a080bb69d30f11738d753a60d1eb733d627c2093\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fb700ef026766c95578aafc0db1b208946e7ad4f\",\n                            \"lessThan\": \"7c5b0e813efd9124760d5fd1bfc6b229f03fb1a2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fb700ef026766c95578aafc0db1b208946e7ad4f\",\n                            \"lessThan\": \"36e3f13bf0728f4ce11ee8904cec82a783222f62\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fb700ef026766c95578aafc0db1b208946e7ad4f\",\n                            \"lessThan\": \"32ac1b0b7f1cfa0d1a1faf9c72f4154046101070\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fb700ef026766c95578aafc0db1b208946e7ad4f\",\n                            \"lessThan\": \"ee5a386cfe60f3f8286de16a9db8e1a08f0bc124\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/nfs/pnfs.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.13\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.13\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.109\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/f52188118d319b47d49ee91a897f6afda4879c59","https://git.kernel.org/stable/c/ad3e41855325e55623276660ef20fbc3b8ba087f","https://git.kernel.org/stable/c/a080bb69d30f11738d753a60d1eb733d627c2093","https://git.kernel.org/stable/c/7c5b0e813efd9124760d5fd1bfc6b229f03fb1a2","https://git.kernel.org/stable/c/36e3f13bf0728f4ce11ee8904cec82a783222f62","https://git.kernel.org/stable/c/32ac1b0b7f1cfa0d1a1faf9c72f4154046101070","https://git.kernel.org/stable/c/ee5a386cfe60f3f8286de16a9db8e1a08f0bc124"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89710","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89710","identifiers":["CVE-2026-89710"]},"retained":false,"historicalAffected":[]}],"coverage":[]}