01 Record

CVE-2026-23069

vsock/virtio: fix potential underflow in virtio_transport_get_credit()

UnratedPUBLISHEDCNA: Linux

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

vsock/virtio: fix potential underflow in virtio_transport_get_credit()

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.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited 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

0.18% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 7.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Modified. 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

2026-02-04 16:07Z8 MO AGO

Last updated

2026-10-19 18:25Z10 DAYS AGO

Reserved

2026-01-13

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-190Integer Overflow or WraparoundBase
CWE-191Integer Underflow (Wrap or Wraparound)Base

Data version

5.2

Document digest

bba23c36e35b1df98a759b0ce65aa7b9906b7ff9f749a514f298f65790634864

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux06a8fc78367d070720af960dcecec917d3ae5f3b to < d96de882d6b99955604669d962ae14e94b66a551, 06a8fc78367d070720af960dcecec917d3ae5f3b to < 02f9af192b98d15883c70dd41ac76d1b0217c899, 06a8fc78367d070720af960dcecec917d3ae5f3b to < d05bc313788f0684b27f0f5b60c52a844669b542, 06a8fc78367d070720af960dcecec917d3ae5f3b to < ec0f1b3da8061be3173d1c39faaf9504f91942c3, 06a8fc78367d070720af960dcecec917d3ae5f3b to < 3ef3d52a1a9860d094395c7a3e593f3aa26ff012, 4.8—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/d96de882d6b99955604669d962ae14e94b66a551
git.kernel.orghttps://git.kernel.org/stable/c/02f9af192b98d15883c70dd41ac76d1b0217c899
git.kernel.orghttps://git.kernel.org/stable/c/d05bc313788f0684b27f0f5b60c52a844669b542
git.kernel.orghttps://git.kernel.org/stable/c/ec0f1b3da8061be3173d1c39faaf9504f91942c3
git.kernel.orghttps://git.kernel.org/stable/c/3ef3d52a1a9860d094395c7a3e593f3aa26ff012

07 Fixed in

Debian 12

linux
Fixed in 6.1.162-1

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

Debian 13

linux
Fixed in 6.12.69-1

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

Debian 14

linux
Fixed in 6.18.8-1

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