PT-2025-40762 · Linux+2 · Linux Kernel+2
Published
2023-08-04
·
Updated
2025-11-28
·
CVE-2023-53599
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a flaw within the crypto/af alg subsystem, specifically impacting the gcm-aes-s390 driver. A missing initialization in
af alg alloc areq() can lead to an issue where areq->first rsgl.sgl.sgl is not properly initialized, causing a kernel oops when gcm walk start() is called on req->dst. This occurs when an empty ciphertext is processed. The issue does not appear to affect x86 64 systems using gcmaes crypt by sg(). The error manifests as a kernel pointer dereference, potentially leading to system instability. The function gcm walk start() is involved in the error.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Improper Resource Release
NULL Pointer Dereference
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Related Identifiers
Affected Products
Linux Kernel
Suse
Gcm-Aes-S390