01 Record

CVE-2026-89682

nfsd: fix fcache_disposal UAF by inlining dispose state into nfsd_net

HighPUBLISHEDCNA: Linux

CNA base score8.1 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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02 Description

nfsd: fix fcache_disposal UAF by inlining dispose state into nfsd_net

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.55% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 45.8% of scored records. A rank, not a probability.
NVD base score: 8.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status: Received. NVD last modified this record on 2026-10-21.
Red Hat severity: Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-09-11 19:46Z1 MO AGO

Last updated

2026-10-21 12:48Z8 DAYS AGO

Reserved

2026-09-11

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.1)

CNA CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-416Use After FreeVariant

Data version

5.2

Document digest

c52ba99c2d7e4cc9b88faef76ef9f63281ef1c36ad9772cca46336910eb03e52

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux1463b38e7cf34d4cc60f41daff459ad807b2e408 to < e6c3a43d0a41f03abae3764fc82a59369360c7e0, 1463b38e7cf34d4cc60f41daff459ad807b2e408 to < 9c8ac7c2b9b150e13b7ad0d0fae54f17747dce67, 1463b38e7cf34d4cc60f41daff459ad807b2e408 to < ba0ee9e04b7a0356c28d5a2fe445db675d24e572, 1463b38e7cf34d4cc60f41daff459ad807b2e408 to < cadc9036d5a8209f89e7026ddba7cfb1c716b03c, 1463b38e7cf34d4cc60f41daff459ad807b2e408 to < bbf13732f74351d21c5e0e8dd9bd8e1c48dc35d4, e8f923e1e9fcc0832a12c8a2461792e5a9544c03, 3bc94fb44f10ef852723e1aeaac6794c5ab16aec, 5.10.220 to < 5.11, 5.15.154 to < 5.16, 5.17—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/e6c3a43d0a41f03abae3764fc82a59369360c7e0
git.kernel.orghttps://git.kernel.org/stable/c/9c8ac7c2b9b150e13b7ad0d0fae54f17747dce67
git.kernel.orghttps://git.kernel.org/stable/c/ba0ee9e04b7a0356c28d5a2fe445db675d24e572
git.kernel.orghttps://git.kernel.org/stable/c/cadc9036d5a8209f89e7026ddba7cfb1c716b03c
git.kernel.orghttps://git.kernel.org/stable/c/bbf13732f74351d21c5e0e8dd9bd8e1c48dc35d4

07 Fixed in

Debian 12

linux
No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 7.2.6-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.