Vulnerability in Linux

CVE-2026-74469

In the Linux kernel, the following vulnerability has been resolved: sctp: prevent peer transport count overflow sctp_assoc_add_peer() increments the association's 16-bit transport_count for every new unique peer. Adding the 65,536th transport wraps the count to zero. SCTP sock_diag uses transport_count to reserve the INET_DIAG_PEERS payload, then copies one sockaddr_storage for every entry in transport_addr_list. After the wrap, a diagnostic dump reserves an empty payload and writes 8 MiB of peer addresses past the skb tail. Reject a new unique peer when transport_count has reached U16_MAX. Perform the check after the existing-peer lookup so a duplicate address continues to return its existing transport at the limit.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (63.8th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-74469: rose from 0.005 to 0.011.

EPSS over last 30 days · oldest: 0.005 · newest: 0.011 · change: +0.006

Affected products

  • Linux — versions 7.2-rc6, 8f840e47f190cbe61a96945c13e9551048d42cef, 7.2

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2026-74469?
CVE-2026-74469 is a high-severity vulnerability in Linux. CVSS score: 8.8/10. Published 2026-08-15.
How severe is CVE-2026-74469?
High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2026-74469 known to be exploited?
3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.