Use After Free in Linux

CVE-2023-53504

In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: Properly order ib_device_unalloc() to avoid UAF ib_dealloc_device() should be called only after device cleanup. Fix the dealloc sequence.

Vulnerability class: Use-After-Free

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (3.8th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 3.8% 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-2023-53504: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

  • Linux — versions 6d758147c7b80a46465f72e9e6294d244ee98a21, 6.3, 0
  • Linux Kernel — versions 6.5

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2023-53504?
CVE-2023-53504 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2025-10-01.
How severe is CVE-2023-53504?
High severity. CVSS v3 base score is 7.8 out of 10.