CVE-2026-89697 (GCVE-0-2026-89697)
Vulnerability from cvelistv5
Published
2026-09-11 19:46
Modified
2026-10-19 08:51
Severity ?
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Summary
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().
References
Impacted products
Vendor Product Version
Linux Linux Version: cc265089ce1b176dde963c74b53593446ee7f99a
Version: cc265089ce1b176dde963c74b53593446ee7f99a
Version: cc265089ce1b176dde963c74b53593446ee7f99a
Version: cc265089ce1b176dde963c74b53593446ee7f99a
Version: cc265089ce1b176dde963c74b53593446ee7f99a
Version: cc265089ce1b176dde963c74b53593446ee7f99a
Version: cc265089ce1b176dde963c74b53593446ee7f99a
Version: cc265089ce1b176dde963c74b53593446ee7f99a
Version: 1cb57d81cf20fe24b9e2e1daf57bfbdc24b77cd8
Version: 3.18.46   ≤
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  }
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.