Bug 2536657 (CVE-2026-93161) - CVE-2026-93161 kernel: crypto: qat - clear AES key schedule from stack
Summary: CVE-2026-93161 kernel: crypto: qat - clear AES key schedule from stack
Keywords:
Status: NEW
Alias: CVE-2026-93161
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-17 19:03 UTC by OSIDB Bzimport
Modified: 2026-10-06 14:20 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-09-17 19:03:05 UTC 
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.
Comment 1 gkamathe 2026-09-18 22:28:40 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93161.mbox
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