Use After Free in Linux

CVE-2023-52479

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix uaf in smb20_oplock_break_ack drop reference after use opinfo.

Vulnerability class: Use-After-Free

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: 0.006 (47.1th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.1% 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-2023-52479: held from 0.006 to 0.006.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

  • Linux — versions 6.5.7, 0626e6641f6b467447c81dd7678a69c66f7746cf, 5.15
  • Linux Kernel — versions 6.6

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2023-52479?
CVE-2023-52479 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 8.8/10. Published 2024-02-29.
How severe is CVE-2023-52479?
High severity. CVSS v3 base score is 8.8 out of 10.