01 Record

CVE-2025-21792

ax25: Fix refcount leak caused by setting SO_BINDTODEVICE sockopt

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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02 Description

ax25: Fix refcount leak caused by setting SO_BINDTODEVICE sockopt

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

0.24% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 15.1% 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 2026-07-30.

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

2025-02-27 02:18Z1 YR AGO

Last updated

2026-08-05 11:54Z2 MO AGO

Reserved

2024-12-29

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

CWE-401Missing Release of Memory after Effective LifetimeVariant

Data version

5.2

Document digest

ed0ae7a6294ed7fe9af0463e0b2e76cc962f8f1b8ccb762c13f609123d1402c4

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux9fd75b66b8f68498454d685dc4ba13192ae069b0 to < 90056ece99966182dc0e367f3fd2afab46ada847, 9fd75b66b8f68498454d685dc4ba13192ae069b0 to < 94a0de224ed52eb2ecd4f4cb1b937b674c9fb955, 9fd75b66b8f68498454d685dc4ba13192ae069b0 to < b58f7ca86a7b8e480c06e30c5163c5d2f4e24023, 9fd75b66b8f68498454d685dc4ba13192ae069b0 to < 470bda72fda0fcf54300466d70ce2de62f7835d2, 9fd75b66b8f68498454d685dc4ba13192ae069b0 to < bca0902e61731a75fc4860c8720168d9f1bae3b6, c44a453ffe16eb08acdc6129ac4fa0192dbc0456, de55a1338e6a48ff1e41ea8db1432496fbe2a62b, 9e1e088a57c23251f1cfe9601bbd90ade2ea73b9, b20a5ab0f5fb175750c6bafd4cf12daccf00c738, 452ae92b99062d2f6a34324eaf705a3b7eac9f8b, 534156dd4ed768e30a43de0036f45dca7c54818f, 4.14.277 to < 4.15, 4.19.240 to < 4.20, 5.4.190 to < 5.5, 5.10.112 to < 5.11, 5.15.35 to < 5.16, 5.17.2 to < 5.18, 5.18—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/90056ece99966182dc0e367f3fd2afab46ada847
git.kernel.orghttps://git.kernel.org/stable/c/94a0de224ed52eb2ecd4f4cb1b937b674c9fb955
git.kernel.orghttps://git.kernel.org/stable/c/b58f7ca86a7b8e480c06e30c5163c5d2f4e24023
git.kernel.orghttps://git.kernel.org/stable/c/470bda72fda0fcf54300466d70ce2de62f7835d2
git.kernel.orghttps://git.kernel.org/stable/c/bca0902e61731a75fc4860c8720168d9f1bae3b6
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/03/msg00028.html

07 Fixed in

Debian 12

linux
Fixed in 6.1.129-1

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

Debian 13

linux
Fixed in 6.12.16-1

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

Debian 14

linux
Fixed in 6.12.16-1

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