PT-2025-40678 · Linux+1 · Linux Kernel+1

Published 2024-04-30 · Updated 2026-02-09 · CVE-2023-53536

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The blk crypto evict key() function in the Linux kernel could lead to a use-after-free condition in blk crypto reprogram all keys() if the key is still in use or if the keyslot evict operation fails. This occurs because blk crypto evict key() may return without unlinking the key from the keyslot management structures, while the caller proceeds to free the key regardless of the return value. The fix involves ensuring that blk crypto evict key() always unlinks the key from the keyslot management structures, even on failure.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALSA-2025_16880

CVE-2023-53536

RHSA-2024:2394

RHSA-2024_2394

Affected Products

Linux Kernel

Red Hat

References · 21

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53536.json · Exploit
• https://security-tracker.debian.org/tracker/CVE-2023-53536 · Vendor Advisory
• https://git.kernel.org/stable/c/5c7cb94452901a93e90c2230632e2c12a681bc92 · Patch
• https://git.kernel.org/stable/c/701a8220762ff90615dc91d3543f789391b63298 · Patch
• https://ubuntu.com/security/CVE-2023-53536 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-53536 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53536 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53536 · Security Note
• https://git.kernel.org/stable/c/809a5be62e92a444a3c3d7b9f438019d0b322f55 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53536 · Vendor Advisory
• https://git.kernel.org/stable/c/5c62852942667c613de0458fc797c5b8c36112b5 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2023-53536 · Security Note
• https://git.kernel.org/stable/c/64ef787bb1588475163069c2e62fdd8f6c27b1f6 · Patch
• https://git.kernel.org/stable/c/5bb4005fb667c6e2188fa87950f8d5faf2994410 · Patch
• https://osv.dev/vulnerability/BELL-CVE-2023-53536 · Vendor Advisory