CVE-2023-53743

In the Linux kernel, the following vulnerability has been resolved: PCI: Free released resource after coalescing release_resource() doesn't actually free the resource or resource list entry so free the resource list entry to avoid a leak.

Package Linux Kernel
Published 2025-12-08
Last modified 2026-04-15
Patch available
Yes

Affected versions

Linux kernel versions 6.1.40, 6.4.5, 5.15.181, 6.5 and later are affected. Fixed in 6.1.53, 6.4.16, 6.5.3, 6.6 and their respective stable series.

Affected from
≥ 6.1.40 ≥ 6.4.5 ≥ 5.15.181 ≥ 6.5
Fixed in
✓ 6.1.53 6.1.x ✓ 6.4.16 6.4.x ✓ 6.5.3 6.5.x ✓ 6.6

References

The following references provide additional information about CVE-2023-53743 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Frequently asked questions

  • What is CVE-2023-53743?

    CVE-2023-53743 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.1.40 onward and has been patched in 6.1.53, 6.4.16, 6.5.3 and others. CVE-2023-53743 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • Is there a patch available for CVE-2023-53743?

    Yes — CVE-2023-53743 has been patched. Fixed versions include 6.1.53, 6.4.16, 6.5.3 and others. If you are running Linux kernel 6.1.40 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2023-53743 actively exploited?

    No — CVE-2023-53743 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.