01 Record

CVE-2025-39848

ax25: properly unshare skbs in ax25_kiss_rcv()

HighPUBLISHEDCNA: Linux

CNA base score8.8 CVSS v3.xCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

ax25: properly unshare skbs in ax25_kiss_rcv()

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: 0.24% 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 2026-10-19.
Red Hat severity: No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2025-09-19 15:26Z1 YR AGO

Last updated

2026-08-05 12:05Z2 MO AGO

Reserved

2025-04-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

acb3365543a9120166e036545d29c1b67d4b23c88e3453dbe4e7b26f0c3fcf28

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 42b46684e2c78ee052d8c2ee8d9c2089233c9094, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 5b079be1b9da49ad88fc304c874d4be7085f7883, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 2bd0f67212908243ce88e35bf69fa77155b47b14, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 01a2984cb803f2d487b7074f9718db2bf3531f69, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 7d449b7a6c8ee434d10a483feed7c5c50108cf56, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 89064cf534bea4bb28c83fe6bbb26657b19dd5fe, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < b1c71d674a308d2fbc83efcf88bfc4217a86aa17, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 8156210d36a43e76372312c87eb5ea3dbb405a85, 2.6.12—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/42b46684e2c78ee052d8c2ee8d9c2089233c9094
git.kernel.orghttps://git.kernel.org/stable/c/5b079be1b9da49ad88fc304c874d4be7085f7883
git.kernel.orghttps://git.kernel.org/stable/c/2bd0f67212908243ce88e35bf69fa77155b47b14
git.kernel.orghttps://git.kernel.org/stable/c/01a2984cb803f2d487b7074f9718db2bf3531f69
git.kernel.orghttps://git.kernel.org/stable/c/7d449b7a6c8ee434d10a483feed7c5c50108cf56
git.kernel.orghttps://git.kernel.org/stable/c/89064cf534bea4bb28c83fe6bbb26657b19dd5fe
git.kernel.orghttps://git.kernel.org/stable/c/b1c71d674a308d2fbc83efcf88bfc4217a86aa17
git.kernel.orghttps://git.kernel.org/stable/c/8156210d36a43e76372312c87eb5ea3dbb405a85
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-032379.html

07 Fixed in

Debian 12

linux
Fixed in 6.1.153-1

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

Debian 13

linux
Fixed in 6.12.48-1

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

Debian 14

linux
Fixed in 6.16.6-1

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