Use After Free in Linux

CVE-2024-40920

In the Linux kernel, the following vulnerability has been resolved: net: bridge: mst: fix suspicious rcu usage in br_mst_set_state I converted br_mst_set_state to RCU to avoid a vlan use-after-free but forgot to change the vlan group dereference helper. Switch to vlan group RCU deref helper to fix the suspicious rcu usage warning.

Vulnerability class: Use-After-Free

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (33.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.7% 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-2024-40920: held from 0.004 to 0.004.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

  • Linux — versions 3a7c1661ae1383364cd6092d851f5e5da64d476b, e43dd2b1ec746e105b7db5f9ad6ef14685a615a4, 6.9.3
  • Linux Kernel — versions 6.10

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2024-40920?
CVE-2024-40920 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.1/10. Published 2024-07-12.
How severe is CVE-2024-40920?
High severity. CVSS v3 base score is 7.1 out of 10.