PT-2025-41084 · Linux+5 · Linux Kernel+5

Published 2023-05-17 · Updated 2026-03-14 · CVE-2023-53640

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 ASoC (Audio System on Chip) and lpass components. Specifically, the issue involves a use-after-free and out-of-bounds error detected by KASAN (Kernel Address Sanitizer) during testing with syzkaller. The error manifests as a "slab-out-of-bounds Read" in the regcache flat read function. The root cause is related to improper error checking and validation of values. The issue was identified and addressed through error checking and value validation.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

ALSA-2025_16880

BDU:2026-03846

CVE-2023-53640

RHSA-2023:6583

RHSA-2023_6583

SUSE-SU-2025:4111-1

SUSE-SU-2025:4139-1

SUSE-SU-2025:4149-1

SUSE-SU-2025:4320-1

Affected Products

Asoc

Debian

Linux Kernel

Red Hat

Suse

Lpass

References · 454

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53640.json · Exploit
• https://bdu.fstec.ru/vul/2026-03846 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:4320-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53640 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4111-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-53640 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-53640 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4139-1 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-53640 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4149-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53640 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53640 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53640 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53640 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2023-53640 · Vendor Advisory