Answer in brief
CVE-2026-89697 records a Critical severity (CVSS 9.1) vulnerability in nfsd: add fh_want_write() for early-verified SETATTR in nfsd_proc_setattr(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=cc265089ce1b176dde963c74b53593446ee7f99a <15ca3b64a69caa6194bed8f98a20ed90a11c11dd || >=cc265089ce1b176dde963c74b53593446ee7f99a <533964d420d385e11b08dd4c56c66ef5dcccaf08 || >=cc265089ce1b176dde963c74b53593446ee7f99a <c4a409b86a92815181a8e9395c6bf1696ad19175 || >=cc265089ce1b176dde963c74b53593446ee7f99a <4e475be769aa9f7a2c1ce55a2b8592cfccacddcc || 1cb57d81cf20fe24b9e2e1daf57bfbdc24b77cd8 || >=3.18.46 <3.19 | 15ca3b64a69caa6194bed8f98a20ed90a11c11dd, 533964d420d385e11b08dd4c56c66ef5dcccaf08, c4a409b86a92815181a8e9395c6bf1696ad19175, 4e475be769aa9f7a2c1ce55a2b8592cfccacddcc, 3.19 |
| Linux/Linuxgeneric | 4.2 | Not reported |
| Linux/Linuxgeneric | >=cc265089ce1b176dde963c74b53593446ee7f99a <3eec9d791968c177a4a8cda9af5c04f79dae09cb || >=cc265089ce1b176dde963c74b53593446ee7f99a <9229d824b938f4fb0ea7a5dddade51735e6fe6f9 || >=cc265089ce1b176dde963c74b53593446ee7f99a <2150305134889fb2fc25228d35353bd2f6f29500 || >=cc265089ce1b176dde963c74b53593446ee7f99a <d823bf9285cdf4514873b85ab5a888878dd4e8f4 || >=cc265089ce1b176dde963c74b53593446ee7f99a <15ca3b64a69caa6194bed8f98a20ed90a11c11dd || >=cc265089ce1b176dde963c74b53593446ee7f99a <533964d420d385e11b08dd4c56c66ef5dcccaf08 || >=cc265089ce1b176dde963c74b53593446ee7f99a <c4a409b86a92815181a8e9395c6bf1696ad19175 || >=cc265089ce1b176dde963c74b53593446ee7f99a <4e475be769aa9f7a2c1ce55a2b8592cfccacddcc || 1cb57d81cf20fe24b9e2e1daf57bfbdc24b77cd8 || >=3.18.46 <3.19 | 3eec9d791968c177a4a8cda9af5c04f79dae09cb, 9229d824b938f4fb0ea7a5dddade51735e6fe6f9, 2150305134889fb2fc25228d35353bd2f6f29500, d823bf9285cdf4514873b85ab5a888878dd4e8f4, 15ca3b64a69caa6194bed8f98a20ed90a11c11dd, 533964d420d385e11b08dd4c56c66ef5dcccaf08, c4a409b86a92815181a8e9395c6bf1696ad19175, 4e475be769aa9f7a2c1ce55a2b8592cfccacddcc, 3.19 |
Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 11, 2026
In the Linux kernel, the following vulnerability has been resolved: nfsd: add fh_want_write() for early-verified SETATTR in nfsd_proc_setattr() The BOTH_TIME_SET branch calls fh_verify() early so setattr_prepare() can inspect the dentry. This causes nfsd_setattr() to skip fh_want_write(), so notify_change() runs without a mount write reference. Add the missing fh_want_write() call after the early fh_verify().
Quoted source text, attributed separately from HOL analysis.