CVE-2023-53536 — Use After Free in Linux

CWE-416 — Use After FreeCWE-825 — Expired Pointer Dereference5 documents5 sources
Severity
7.8HIGHNVD
EPSS
0.0%
top 96.97%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedOct 4

Description

In the Linux kernel, the following vulnerability has been resolved: blk-crypto: make blk_crypto_evict_key() more robust If blk_crypto_evict_key() sees that the key is still in-use (due to a bug) or that ->keyslot_evict failed, it currently just returns while leaving the key linked into the keyslot management structures. However, blk_crypto_evict_key() is only called in contexts such as inode eviction where failure is not an option. So actually the caller proceeds with freeing the blk_crypto_k…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages4 packages

▶NVDlinux/linux_kernel5.8 — 5.10.180+4
▶Debianlinux/linux_kernel< 5.10.191-1+3
▶CVEListV5linux/linux1b2628397058ebce7277480960b29c788138de90 — 701a8220762ff90615dc91d3543f789391b63298+6
▶debiandebian/linux< linux 6.1.37-1 (bookworm)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
OSV
CVE-2023-53536: In the Linux kernel, the following vulnerability has been resolved: blk-crypto: make blk_crypto_evict_key() more robust If blk_crypto_evict_key() sees↗2025-10-04
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GHSA
GHSA-f2cg-q42r-r6f6: In the Linux kernel, the following vulnerability has been resolved: blk-crypto: make blk_crypto_evict_key() more robust If blk_crypto_evict_key() se↗2025-10-04
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📋Vendor Advisories

2
Red Hat
kernel: blk-crypto: make blk_crypto_evict_key() more robust↗2025-10-04
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Debian
CVE-2023-53536: linux - In the Linux kernel, the following vulnerability has been resolved: blk-crypto:...↗2023
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