7.5

CVE-2026-74624: linux

CVSS: 7.5v3.1HighReceived
AliasesUBUNTU-CVE-2026-74624DEBIAN-CVE-2026-74624
Published 22-08-2026Last modified 16-10-2026
Open JSON

Vulnerability summary

CVE-2026-74624 is a high (CVSS 7.5) vulnerability in linux. EPSS estimates a 0.48% chance of exploitation in the next 30 days, higher than 40% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.48%
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 2 · Related 1
MGASA-2026-0506USN-8886-1

Timeline

  1. 22-08-2026
    PublishedVulnerability first disclosed.
  2. 16-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack: defer invalid log until after unlock TCP and SCTP conntrack paths can emit invalid-packet logs while ct->lock is still held. When invalid logging is routed to nfnetlink_log and conntrack export is enabled, the log path can re-enter conntrack netlink glue and dump the same conntrack again. Protocol attribute dumping may take ct->lock, so logging while holding that lock can deadlock. Defer the TCP invalid logs by storing only the minimal log context while ct->lock is held and emitting the log after unlocking. Also make the TCP timeout-lowering invalid path return whether a log is needed, then emit that log after unlocking. Do the same for the SCTP invalid state-transition log that can be reached while ct->lock is held. Add a lockdep assertion to nf_ct_l4proto_log_invalid() so future callers that log invalid conntracks while holding ct->lock are caught outside TCP and SCTP as well.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.48%

Chance of exploitation in the next 30 days

Percentile

40%

Versus all other CVEs

30-day change

0.00 pp

From 0.48% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.48%

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

Ubuntu142 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.1.187-1 | < 6.12.105-1 | < 7.1.9-1
  • linux-6.12< 6.12.107-1~deb12u1
Linux1 product
  • linux≥ d9a6f0d0df1899ff9086a57abc600e414f4b8cdd, < ca97360eba4b3dc67f1804625542f4ccc774242a | ≥ d9a6f0d0df1899ff9086a57abc600e414f4b8cdd, < 63853eb20bba4e00b7cd0b8cfc19337bbaaf5037 | ≥ d9a6f0d0df1899ff9086a57abc600e414f4b8cdd, < 9480fcf70a5aa9d320088a01c95df0e5e6391f4a | ≥ d9a6f0d0df1899ff9086a57abc600e414f4b8cdd, < 0424186d570aa4d1ad17f516afb86bd9eaa4f42e | ≥ d9a6f0d0df1899ff9086a57abc600e414f4b8cdd, < c0224327b7cbed9d3198e8dbec847281053dcd06 | ≥ d9a6f0d0df1899ff9086a57abc600e414f4b8cdd, < 2d19b95c9723001f214f7a47d67b09f46238f200 | 6.1

3 vendors · 145 products

References

11 links
Show all 11 references