7.8

CVE-2026-72383: linux

CVSS: 7.8v3.1HighReceived
AliasesUBUNTU-CVE-2026-72383DEBIAN-CVE-2026-72383
Published 15-08-2026Last modified 21-10-2026
Open JSON

Vulnerability summary

CVE-2026-72383 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.9% 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
0.16%
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 22 · Related 22
OPENSUSE-SU-2026:22091-1SUSE-SU-2026:24179-1SUSE-SU-2026:24181-1SUSE-SU-2026:24182-1SUSE-SU-2026:24184-1SUSE-SU-2026:24197-1

Timeline

  1. 15-08-2026
    PublishedVulnerability first disclosed.
  2. 21-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: sctp: fix addr_wq_timer race in sctp_free_addr_wq() sctp_free_addr_wq() previously removed addr_wq_timer using timer_delete() while holding addr_wq_lock. However, timer_delete() does not guarantee that a currently running timer handler has completed. This allows a race with sctp_addr_wq_timeout_handler(), where the handler may still run after addr_waitq has been freed, acquire addr_wq_lock, and access freed memory, leading to a use-after-free. Fix this by calling timer_shutdown_sync() before taking addr_wq_lock. This guarantees that any in-flight timer handler has finished and prevents the timer from being re-armed during teardown, making subsequent cleanup safe.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

0.00 pp

From 0.16% on 21-09-2026

21-09-202621-10-2026
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

Ubuntu169 products
  • linuxAll versions (No fix recorded) | < 7.0.0-38.38
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 7.0.0-1014.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linuxAll versions (No fix recorded) | < 7.1.5-1
Linux1 product
  • linux≥ 4db67e808640e3934d82ce61ee8e2e89fd877ba8, < 5098308ad72f83f3b1a48c247dddab1695114bae | ≥ 4db67e808640e3934d82ce61ee8e2e89fd877ba8, < d49eff15261dd62e4fa3a316c26cb1f537a60464 | ≥ 4db67e808640e3934d82ce61ee8e2e89fd877ba8, < a8323fb2ab6cd6978f359daeed6688e0cadf32ba | ≥ 4db67e808640e3934d82ce61ee8e2e89fd877ba8, < c3e5cac47519d77ad36b9c03a1df1536aaa0c4a1 | ≥ 4db67e808640e3934d82ce61ee8e2e89fd877ba8, < 976c19de0f22a857ba0112f39635f8fd7a257568 | 3.7

3 vendors · 171 products

References

16 links
Show all 16 references