What’s Vulnerable › Vulnerabilities

CVE-2026-93161: crypto: qat - clear AES key schedule from stack

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-17 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: qat - clear AES key schedule from stack qat_alg_xts_reverse_key() expands the forward XTS AES key on the stack. That schedule contains key material and can remain in the stack frame. Clear the temporary crypto_aes_ctx with memzero_explicit() after the copy.

Affected products

• Linux kernel: 5.11 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/892f34dc1819cceb8841005a68086710ce3763b6
• https://git.kernel.org/stable/c/92e4979e1a770860b26aa3d90cce0c4c6a53833c
• https://git.kernel.org/stable/c/9af019e213ada5c3d0d33c515071a1414b6899f3
• https://git.kernel.org/stable/c/b9cf42622b30178f554fa74411eec67e02d70411
• https://git.kernel.org/stable/c/d41a9fcfb7f9ee36e4a4aaf5e7996bca6be1e7a9
• https://git.kernel.org/stable/c/dcaa0f1e86cbcb01f68131ae907b54cf299a3592
• https://git.kernel.org/stable/c/fb1194b78a163cc56bb9480c707fc34b53522359

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