{"id":"CVE-2026-89697","revision":"fcede7e738b54491812b4cb453b48847","records":[{"revision":"fcede7e738b54491812b4cb453b48847","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89697","aliases":[],"title":"nfsd: add fh_want_write() for early-verified SETATTR in nfsd_proc_setattr()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: add fh_want_write() for early-verified SETATTR in nfsd_proc_setattr()\n\nThe BOTH_TIME_SET branch calls fh_verify() early so setattr_prepare()\ncan inspect the dentry. This causes nfsd_setattr() to skip\nfh_want_write(), so notify_change() runs without a mount write\nreference.\n\nAdd the missing fh_want_write() call after the early fh_verify().","state":0,"publishedAt":"2026-09-11T19:46:15.772+00:00","modifiedAt":"2026-10-19T08:51:10.455+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/nfsd/nfsproc.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"cc265089ce1b176dde963c74b53593446ee7f99a\",\n                            \"lessThan\": \"3eec9d791968c177a4a8cda9af5c04f79dae09cb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cc265089ce1b176dde963c74b53593446ee7f99a\",\n                            \"lessThan\": \"9229d824b938f4fb0ea7a5dddade51735e6fe6f9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cc265089ce1b176dde963c74b53593446ee7f99a\",\n                            \"lessThan\": \"2150305134889fb2fc25228d35353bd2f6f29500\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cc265089ce1b176dde963c74b53593446ee7f99a\",\n                            \"lessThan\": \"d823bf9285cdf4514873b85ab5a888878dd4e8f4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cc265089ce1b176dde963c74b53593446ee7f99a\",\n                            \"lessThan\": \"15ca3b64a69caa6194bed8f98a20ed90a11c11dd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cc265089ce1b176dde963c74b53593446ee7f99a\",\n                            \"lessThan\": \"533964d420d385e11b08dd4c56c66ef5dcccaf08\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cc265089ce1b176dde963c74b53593446ee7f99a\",\n                            \"lessThan\": \"c4a409b86a92815181a8e9395c6bf1696ad19175\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cc265089ce1b176dde963c74b53593446ee7f99a\",\n                            \"lessThan\": \"4e475be769aa9f7a2c1ce55a2b8592cfccacddcc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1cb57d81cf20fe24b9e2e1daf57bfbdc24b77cd8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3.18.46\",\n                            \"lessThan\": \"3.19\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\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/nfsd/nfsproc.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.2\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\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":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","score":9.1,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/3eec9d791968c177a4a8cda9af5c04f79dae09cb","https://git.kernel.org/stable/c/9229d824b938f4fb0ea7a5dddade51735e6fe6f9","https://git.kernel.org/stable/c/2150305134889fb2fc25228d35353bd2f6f29500","https://git.kernel.org/stable/c/d823bf9285cdf4514873b85ab5a888878dd4e8f4","https://git.kernel.org/stable/c/15ca3b64a69caa6194bed8f98a20ed90a11c11dd","https://git.kernel.org/stable/c/533964d420d385e11b08dd4c56c66ef5dcccaf08","https://git.kernel.org/stable/c/c4a409b86a92815181a8e9395c6bf1696ad19175","https://git.kernel.org/stable/c/4e475be769aa9f7a2c1ce55a2b8592cfccacddcc"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89697","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89697","identifiers":["CVE-2026-89697"]},"retained":false,"historicalAffected":[]}],"coverage":[]}