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.
References
Configurations
Configuration 1 (hide)
|
History
09 Feb 2026, 22:06
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| First Time |
Linux
Linux linux Kernel |
|
| CWE | CWE-416 | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
| References | () https://git.kernel.org/stable/c/5bb4005fb667c6e2188fa87950f8d5faf2994410 - Patch | |
| References | () https://git.kernel.org/stable/c/5c62852942667c613de0458fc797c5b8c36112b5 - Patch | |
| References | () https://git.kernel.org/stable/c/5c7cb94452901a93e90c2230632e2c12a681bc92 - Patch | |
| References | () https://git.kernel.org/stable/c/64ef787bb1588475163069c2e62fdd8f6c27b1f6 - Patch | |
| References | () https://git.kernel.org/stable/c/701a8220762ff90615dc91d3543f789391b63298 - Patch | |
| References | () https://git.kernel.org/stable/c/809a5be62e92a444a3c3d7b9f438019d0b322f55 - Patch |
04 Oct 2025, 16:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-10-04 16:15
Updated : 2026-02-09 22:06
NVD link : CVE-2023-53536
Mitre link : CVE-2023-53536
CVE.ORG link : CVE-2023-53536
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free