5.5

CVE-2026-46170: linux

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-46170DEBIAN-CVE-2026-46170
Published 28-05-2026Last modified 14-09-2026
Open JSON

Vulnerability summary

CVE-2026-46170 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: free sk if last When an ADD_ADDR is retransmitted, the sk is held in sk_reset_timer(), and released at the end. If at that moment, it was the last reference being held, the sk would not be freed. sock_put() should then be called instead of __sock_put(). But that's not enough: if it is the last reference, sock_put() will call sk_free(), which will end up calling sk_stop_timer_sync() on the same timer, and waiting indefinitely to finish. So it is needed to mark that the timer is done at the end of the timer handler when it has not been rescheduled, not to call sk_stop_timer_sync() on "itself".

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, < aa8cabde7e83bf96269ee47427dc9b59e3ed8e60 | ≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < 1f26487e83e69462540bb1047139472957c913c6 | ≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < 5da972efed3dc7599da6e2b5e8d906d1b7b1a728 | ≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < 6a3af482188f6db4186d1605f64d911d7330abb3 | ≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < 531c537b8fb620beabccfb1594e8d43cbebbb87a | ≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < b74ad20198652b6b39a761c277ba65ae82b1e107 | ≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < 8143a224785ceaf2b0856e08d4498916f38228fb | ≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < b7b9a461569734d33d3259d58d2507adfac107ed | 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