5.5

CVE-2026-46158: linux

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-46158DEBIAN-CVE-2026-46158
Published 28-05-2026Last modified 14-09-2026
Open JSON

Vulnerability summary

CVE-2026-46158 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.1% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.13%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 38 · Related 38
OPENSUSE-SU-2026:10954-1OPENSUSE-SU-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23193-1SUSE-SU-2026:23194-1

Timeline

  1. 28-05-2026
    PublishedVulnerability first disclosed.
  2. 14-09-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADD_ADDR rtx: always decrease sk refcount When an ADD_ADDR is retransmitted, the sk is held in sk_reset_timer(). It should then be released in all cases at the end. Some (unlikely) checks were returning directly instead of calling sock_put() to decrease the refcount. Jump to a new 'exit' label to call __sock_put() (which will become sock_put() in the next commit) to fix this potential leak. While at it, drop the '!msk' check which cannot happen because it is never reset, and explicitly mark the remaining one as "unlikely".

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.13% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.13%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu155 products
  • linuxAll versions (No fix recorded) | < 6.8.0-139.139 | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.8.0-1064.67 | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < f5555a6d7c472849fdf2b426e3d0a85103118793 | ≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < e9ba34301d2e90f63f97c76ad9eb98e5250fe961 | ≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < 81d8142148164176385c279c7c1e1d581867423d | ≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < 9426265e157dd77ec237c795901ed4dea6d69b5c | ≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < b41dd76f3b9735096c21d3e799a2b9fe36498d57 | ≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < acd3d3562315c99f3c0db16f0fcc5f0306638982 | ≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < 25e37407442b8766ec2cf52fb4e31b5c3d3aeeae | ≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < 9634cb35af17019baec21ca648516ce376fa10e6 | 5.10
  • linux_kernel≥ 5.10, < 6.6.142 | ≥ 6.7, < 6.12.92 | ≥ 6.13, < 6.18.30 | ≥ 6.19, < 7.0.7 | 7.1:rc1 | 7.1:rc2
Debian1 product
  • linux< 6.1.187-1 | < 6.12.94-1 | < 7.0.7-1

3 vendors · 158 products

References

38 links
Show all 38 references