5.5

CVE-2026-46168: linux

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-46168DEBIAN-CVE-2026-46168
Published 28-05-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-46168 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5% 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
0.16%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 51 · Related 51
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. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix scheduling with atomic in timestamp sockopt Using lock_sock_fast() (atomic context) around sock_set_timestamp() and sock_set_timestamping() is unsafe, as both helpers can sleep. Replace lock_sock_fast() with sleepable lock_sock()/release_sock() to avoid scheduling while atomic panic.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

+0.03 pp

From 0.13% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.16%

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

Ubuntu154 products
  • linux< 5.15.0-186.196 | < 6.8.0-136.136 | All versions (No fix recorded) | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1112.119 | < 6.8.0-1061.64 | All versions (No fix recorded) | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 9061f24bf82ec2e92dd1e7c10b98b680db023d31, < 0949d8bbbedbafe0136a1723c41eb823c2f1e09d | ≥ 9061f24bf82ec2e92dd1e7c10b98b680db023d31, < e792cfb6aeaf65612cdf8e3ac431d65e66283654 | ≥ 9061f24bf82ec2e92dd1e7c10b98b680db023d31, < ebeb70e29e37cfce899309cc2665a3bfe960ed94 | ≥ 9061f24bf82ec2e92dd1e7c10b98b680db023d31, < b157dab93a7af44a84e78cf0cb311dde475cff5b | ≥ 9061f24bf82ec2e92dd1e7c10b98b680db023d31, < 8a005fe451c73fd2b3d1faa5643c11e6bd07acfc | ≥ 9061f24bf82ec2e92dd1e7c10b98b680db023d31, < 7eb513b42721bee4b96da69f6188d5a7783f210d | ≥ 9061f24bf82ec2e92dd1e7c10b98b680db023d31, < b5c52908d52c6c8eb8933264aa6087a0600fd892 | 5.14
  • linux_kernel≥ 5.14, < 5.15.209 | ≥ 5.16, < 6.1.175 | ≥ 6.2, < 6.6.140 | ≥ 6.7, < 6.12.88 | ≥ 6.13, < 6.18.30 | ≥ 6.19, < 7.0.7 | 7.1:rc1
Debian1 product
  • linux< 6.1.176-1 | < 6.12.88-1 | < 7.0.7-1

3 vendors · 157 products

References

51 links
Show all 51 references