01 Record

CVE-2026-98261

cifs: Fix server use-after-free in cifs_chan_skip_or_disable()

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

cifs: Fix server use-after-free in cifs_chan_skip_or_disable()

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: 0.40% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 34.5% 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 2026-10-19.
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

2026-10-06 08:45Z23 DAYS AGO

Last updated

2026-10-19 09:16Z10 DAYS AGO

Reserved

2026-09-25

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-825Expired Pointer DereferenceBase
CWE-416Use After FreeVariant

Data version

5.2

Document digest

4276b75869c619c5d1d924ddd65c4bef4a7a70ae9c32c2e2848effac18796d13

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux50e8363ecc85da49764781da90ebffe1a657b370 to < 0338489960ddad6368bce55e8adbc176c523093d, f591062bdbf4742b7f1622173017f19e927057b0 to < edd52eae5fcfb8433b6bb0e7cd98db438fe01227, f591062bdbf4742b7f1622173017f19e927057b0 to < fcc0a935bb6e37ecbf7e4335061309f896f35780, f591062bdbf4742b7f1622173017f19e927057b0 to < 7a1b27780b113583a94256d58dabfe7c0d9286e7, f591062bdbf4742b7f1622173017f19e927057b0 to < 717e0a25036b6c92cecace30913b2d874a4c22b8, d61ba1d71ea6039eca7ada870bf3f0c3c8fc12e4, 6.6.15 to < 6.6.158, 6.7.3 to < 6.8, 6.8—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/0338489960ddad6368bce55e8adbc176c523093d
git.kernel.orghttps://git.kernel.org/stable/c/edd52eae5fcfb8433b6bb0e7cd98db438fe01227
git.kernel.orghttps://git.kernel.org/stable/c/fcc0a935bb6e37ecbf7e4335061309f896f35780
git.kernel.orghttps://git.kernel.org/stable/c/7a1b27780b113583a94256d58dabfe7c0d9286e7
git.kernel.orghttps://git.kernel.org/stable/c/717e0a25036b6c92cecace30913b2d874a4c22b8

07 Fixed in

Debian 12

linux-6.12
Fixed in 6.12.113-1~deb12u1

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

Debian 13

linux
Fixed in 6.12.113-1

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

Debian 14

linux
Fixed in 7.2.8-1

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