CVE-2026-93161

crypto: qat - clear AES key schedule from stack

Published Sep 17, 2026 CVSS n/a EPSS < 1% KEV · Not listed

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

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`5106dfeaeabea73d5132daab1d89d57b57fa98b7`	affected	< b9cf42622b30178f554fa74411eec67e02d70411
`5106dfeaeabea73d5132daab1d89d57b57fa98b7`	affected	< fb1194b78a163cc56bb9480c707fc34b53522359
`5106dfeaeabea73d5132daab1d89d57b57fa98b7`	affected	< 892f34dc1819cceb8841005a68086710ce3763b6
`5106dfeaeabea73d5132daab1d89d57b57fa98b7`	affected	< dcaa0f1e86cbcb01f68131ae907b54cf299a3592
`5106dfeaeabea73d5132daab1d89d57b57fa98b7`	affected	< 9af019e213ada5c3d0d33c515071a1414b6899f3
`5106dfeaeabea73d5132daab1d89d57b57fa98b7`	affected	< 92e4979e1a770860b26aa3d90cce0c4c6a53833c
`5106dfeaeabea73d5132daab1d89d57b57fa98b7`	affected	< d41a9fcfb7f9ee36e4a4aaf5e7996bca6be1e7a9

Linux

affected

Version	Status	Constraints
`5.11`	affected	—
`0`	unaffected	< 5.11
`5.15.221`	unaffected	≤ 5.15.*
`6.1.188`	unaffected	≤ 6.1.*
`6.6.157`	unaffected	≤ 6.6.*
`6.12.110`	unaffected	≤ 6.12.*
`6.18.52`	unaffected	≤ 6.18.*
`7.2.6`	unaffected	≤ 7.2.*
`7.3`	unaffected	≤ *

No data.

Vendor Product Versions

Linux

Linux Kernel

Version	Status	Scheme	Platform
`[5106dfeaeabea73d5132daab1d89d57b57fa98b7,b9cf42622b30178f554fa74411eec67e02d70411)`	affected	code_commit	—
`[5106dfeaeabea73d5132daab1d89d57b57fa98b7,fb1194b78a163cc56bb9480c707fc34b53522359)`	affected	code_commit	—
`[5106dfeaeabea73d5132daab1d89d57b57fa98b7,892f34dc1819cceb8841005a68086710ce3763b6)`	affected	code_commit	—
`[5106dfeaeabea73d5132daab1d89d57b57fa98b7,dcaa0f1e86cbcb01f68131ae907b54cf299a3592)`	affected	code_commit	—
`[5106dfeaeabea73d5132daab1d89d57b57fa98b7,9af019e213ada5c3d0d33c515071a1414b6899f3)`	affected	code_commit	—
`[5106dfeaeabea73d5132daab1d89d57b57fa98b7,92e4979e1a770860b26aa3d90cce0c4c6a53833c)`	affected	code_commit	—
`[5106dfeaeabea73d5132daab1d89d57b57fa98b7,d41a9fcfb7f9ee36e4a4aaf5e7996bca6be1e7a9)`	affected	code_commit	—

Linux

Linux Kernel

Version	Status	Scheme	Platform
`5.11`	affected	semver	—
`[0,5.11)`	unaffected	semver	—
`[5.15.221,5.16.0)`	unaffected	semver	—
`[6.1.188,6.2.0)`	unaffected	semver	—
`[6.6.157,6.7.0)`	unaffected	semver	—
`[6.12.110,6.13.0)`	unaffected	semver	—
`[6.18.52,6.19.0)`	unaffected	semver	—
`[7.2.6,7.3.0)`	unaffected	semver	—
`[7.3-rc1,*]`	unaffected	generic	—

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

Source	ID	Title
Debian DLA	DLA-4817-1	linux-6.12 security update
Debian DLA	DLA-4841-1	linux security update
Debian DSA	DSA-6528-1	linux security update
Ubuntu USN	USN-8961-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9019-1	Linux kernel (Azure) vulnerabilities
Ubuntu USN	USN-9020-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9022-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9023-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9024-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9025-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9026-1	Linux kernel (Azure) vulnerabilities
Ubuntu USN	USN-9029-1	Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN	USN-9039-1	Linux kernel (Azure CVM) vulnerabilities
Ubuntu USN	USN-9040-1	Linux kernel (Low Latency NVIDIA) vulnerabilities
Ubuntu USN	USN-9066-1	Linux kernel (HWE) vulnerabilities
Ubuntu USN	USN-9091-1	Linux kernel (NVIDIA Tegra) vulnerabilities

Metrics

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.211% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
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

History

Sep 19, 2026 8:00 AM Weaknesses updated View changes

Type	Values Removed	Values Added
Weaknesses		CWE-200

Sep 17, 2026 4:30 PM Description updated. Title updated. First appearance in the feed. Affected versions updated. Affected vendors updated. Added references View changes

Type	Values Removed	Values Added
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.
Title		crypto: qat - clear AES key schedule from stack
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
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