CVE-2023-53799
Published Dec 9, 2025
Modified Apr 15, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: crypto: api - Use work queue in crypto_destroy_instance The function crypto_drop_spawn expects to be called in process context. However, when an instance is unregistered while it still has active users, the last user may cause the instance to be freed in atomic context. Fix this by delaying the freeing to a work queue.
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References
Other References
https://git.kernel.org/stable/c/048545d9fc6424b0a11e7e8771225bb9afe09422
https://git.kernel.org/stable/c/625bf86bf53eb7a8ee60fb9dc45b272b77e5ce1c
https://git.kernel.org/stable/c/867a146690960ac7b89ce40f4ee60dd32eeb1682
https://git.kernel.org/stable/c/9ae4577bc077a7e32c3c7d442c95bc76865c0f17
https://git.kernel.org/stable/c/c0dbcebc7f390ec7dbe010dcc22c60f0c6bfc26d
https://git.kernel.org/stable/c/c4cb61c5f976183c07d16b0071f0c60bc212ef1f
Frequently Asked Questions
What is CVE-2023-53799? +
In the Linux kernel, the following vulnerability has been resolved:
crypto: api - Use work queue in crypto_destroy_instance
The function crypto_drop_spawn expects to be called in process
context. However, when an instance is unregistered while it still
has active users, the last user may cause the instance to be freed
in atomic context.
Fix this by delaying the freeing to a work queue.
How do I check if I'm vulnerable to CVE-2023-53799? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.