01 Record

CVE-2026-89636

smb: client: clear ce->tgthint in free_tgts()

CriticalPUBLISHEDCNA: Linux

CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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02 Description

smb: client: clear ce->tgthint in free_tgts()

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.66% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 51.0% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/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

2026-09-11 19:45Z1 MO AGO

Last updated

2026-10-19 08:50Z10 DAYS AGO

Reserved

2026-09-11

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

CWE-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

ca333dc75329a5d41513272bafca5e60cbe0754bc318c8a6b9b4d396c5661c46

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux54be1f6c1c37498bba557049df646cc239fa37e3 to < 14f60e959b5ac813715ff72e127beb3584ddabf6, 54be1f6c1c37498bba557049df646cc239fa37e3 to < 3ff9462bb7a06d8d32a1dc02d39580b078ec9e55, 54be1f6c1c37498bba557049df646cc239fa37e3 to < 7507bd1885643d0461a6017767492450af1ce2a3, 54be1f6c1c37498bba557049df646cc239fa37e3 to < 9ab46a13798a61d9d020b01d4e57efdabe6624fa, 54be1f6c1c37498bba557049df646cc239fa37e3 to < 5baab40404a9393bcc0b7b8f1950bf2c307e0984, 54be1f6c1c37498bba557049df646cc239fa37e3 to < b1b741cf8e7ce1b91d937e23decd3d3358748700, 5.0—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/14f60e959b5ac813715ff72e127beb3584ddabf6
git.kernel.orghttps://git.kernel.org/stable/c/3ff9462bb7a06d8d32a1dc02d39580b078ec9e55
git.kernel.orghttps://git.kernel.org/stable/c/7507bd1885643d0461a6017767492450af1ce2a3
git.kernel.orghttps://git.kernel.org/stable/c/9ab46a13798a61d9d020b01d4e57efdabe6624fa
git.kernel.orghttps://git.kernel.org/stable/c/5baab40404a9393bcc0b7b8f1950bf2c307e0984
git.kernel.orghttps://git.kernel.org/stable/c/b1b741cf8e7ce1b91d937e23decd3d3358748700

07 Fixed in

Debian 12

linux
Fixed in 6.1.190-1
linux-6.12
Fixed in 6.12.111-1~deb12u1

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

Debian 13

linux
Fixed in 6.12.111-1

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.