SB20251226134 - Use-after-free in Linux kernel qat qat_common driver
Published: December 26, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251226134
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2022-50774)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the qat_alg_free_bufl() and qat_alg_sgl_to_bufl() functions in drivers/crypto/qat/qat_common/qat_algs.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1f1ab76e251521bd2fa5244473efcf663792745d
- https://git.kernel.org/stable/c/426d5bc089e7731e36b514d1beca19e777a2d653
- https://git.kernel.org/stable/c/429348d4f675e9eb418d0829064c4d7d06bd66a3
- https://git.kernel.org/stable/c/c4c9d9edf4848aed89516b23b88950b194beff6a
- https://git.kernel.org/stable/c/cf5bb835b7c8a5fee7f26455099cca7feb57f5e9
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.150
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.75
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.17
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1