7.8

CVE-2026-23169: linux Race Condition

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2026-23169DEBIAN-CVE-2026-23169
Published 14-02-2026Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2026-23169 is a high (CVSS 7.8) Race Condition vulnerability in linux. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3.3% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.14%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 44 · Related 40
DLA-4499-1DSA-6141-1DSA-6163-1LSN-0122-1OPENSUSE-SU-2026:20416-1SUSE-SU-2026:0962-1

Timeline

  1. 14-02-2026
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix race in mptcp_pm_nl_flush_addrs_doit() syzbot and Eulgyu Kim reported crashes in mptcp_pm_nl_get_local_id() and/or mptcp_pm_nl_is_backup() Root cause is list_splice_init() in mptcp_pm_nl_flush_addrs_doit() which is not RCU ready. list_splice_init_rcu() can not be called here while holding pernet->lock spinlock. Many thanks to Eulgyu Kim for providing a repro and testing our patches.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.14%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

+0.01 pp

From 0.14% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.14%

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

Affected systems

Ubuntu145 products
  • linux< 5.15.0-186.196 | < 6.8.0-134.134 | All versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1112.119 | < 6.8.0-1060.63 | All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 141694df6573b49aa4143c92556544b4b0bbda72, < 338d40bab283da2639780ee3e458fb61f1567d8c | ≥ 141694df6573b49aa4143c92556544b4b0bbda72, < 7896dbe990d56d5bb8097863b2645355633665eb | ≥ 141694df6573b49aa4143c92556544b4b0bbda72, < 455e882192c9833f176f3fbbbb2f036b6c5bf555 | ≥ 141694df6573b49aa4143c92556544b4b0bbda72, < 51223bdd0f60b06cfc7f25885c4d4be917adba94 | ≥ 141694df6573b49aa4143c92556544b4b0bbda72, < 1f1b9523527df02685dde603f20ff6e603d8e4a1 | ≥ 141694df6573b49aa4143c92556544b4b0bbda72, < e2a9eeb69f7d4ca4cf4c70463af77664fdb6ab1d | 5.11
  • linux_kernel≥ 5.11, < 5.15.201 | ≥ 5.16, < 6.1.164 | ≥ 6.2, < 6.6.125 | ≥ 6.7, < 6.12.72 | ≥ 6.13, < 6.18.9 | 6.19:rc1 | 6.19:rc2 | 6.19:rc3 | 6.19:rc4 | 6.19:rc5 | 6.19:rc6 | 6.19:rc7
Debian1 product
  • linux< 6.1.164-1 | < 6.12.73-1 | < 6.18.9-1

3 vendors · 148 products

References

42 links
Show all 42 references