Incorrect calculation in Linux kernel - CVE-2023-53996
Published: December 26, 2025 / Updated: December 31, 2025
Vulnerability identifier: #VU120594
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-53996
CWE-ID: CWE-682
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect calculation within the amd_enc_cache_flush_required(), amd_enc_status_change_finish(), early_set_memory_enc_dec() and early_set_memory_encrypted() functions in arch/x86/mm/mem_encrypt_amd.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2023-53996
Install update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/6615212d8e131b45bd9705b0d69cc0d2f624666f
- https://git.kernel.org/stable/c/8ae7457e71a320867d868f2622d7c643596e4f43
- https://git.kernel.org/stable/c/ac3f9c9f1b37edaa7d1a9b908bc79d843955a1a2
- https://git.kernel.org/stable/c/ba50e7773a99a109a1ea6f753b766a080d3b21cc
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.53