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CVE-2026-23155

20
FAUCET Score

CVE-2026-23155 addresses a bug in the Linux kernel's gs_usb CAN driver, specifically within the gs_usb_receive_bulk_callback function. The vulnerability involves a potential dereference of an uninitialized value during a short read when the netdev is not yet assigned, and an error message improvement for failed resubmissions. While no CVSS score is provided, its low EPSS and FAUCET Risk Score suggest a minimal severity, likely impacting system stability rather than offering direct exploitability for remote code execution. There is no evidence of active exploitation, public exploit code, or significant community discussion, indicating a low immediate threat.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.12.68, < 6.12.69CPE match
cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.18.8, < 6.18.9CPE match
cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.6.122, < 6.6.123CPE match
cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:*
6.6.122CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.6.122:*:*:*:*:*:*:*
6.12.68CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.12.68:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.11%
Probability of exploitation in next 30 days
EPSS Percentile
1.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0011 is in the 11th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (3)

redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 10Fixed in: kernel

Vendor Advisories (1)

redhatCVE-2026-23155Low

kernel: can: gs_usb: gs_usb_receive_bulk_callback(): fix error message

Feb 14, 2026

References

git.kernel.org / stable/c/494fc029f662c331e06b7c2031deff3c64200eed
Patch
git.kernel.org / stable/c/713ba826ae114ab339c9a1b31e209bebdadb0ac9
Patch
git.kernel.org / stable/c/7a431df418ee6b79841e0b4c7c265a791e3d0a75
git.kernel.org / stable/c/8986cdf52f86208df9c7887fee23365b5d37da26
Patch
git.kernel.org / stable/c/923379f1d7e3af8ccbf11edbbcf41f1bb3e9cfe6
Patch
git.kernel.org / stable/c/aed58a28ea71a0d7d0947190fab1e3f4daa1d4a5
Patch