Expired Pointer Dereference Affecting kernel-debuginfo-common-aarch64 package, versions <0:6.1.29-47.49.amzn2023


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.03% (9th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-AMZN2023-KERNELDEBUGINFOCOMMONAARCH64-13705358
  • published24 Oct 2025
  • disclosed4 Oct 2025

Introduced: 4 Oct 2025

NewCVE-2023-53536  (opens in a new tab)
CWE-825  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 kernel-debuginfo-common-aarch64 to version 0:6.1.29-47.49.amzn2023 or higher.
This issue was patched in ALAS2023-2023-184.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debuginfo-common-aarch64 package and not the kernel-debuginfo-common-aarch64 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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_key regardless of the return value of blk_crypto_evict_key().

These two assumptions don't match, and the result is that there can be a use-after-free in blk_crypto_reprogram_all_keys() after one of these errors occurs. (Note, these errors shouldn't happen; we're just talking about what happens if they do anyway.)

Fix this by making blk_crypto_evict_key() unlink the key from the keyslot management structures even on failure.

Also improve some comments.

CVSS Base Scores

version 3.1