PT-2025-40756 · Linux+1 · Linux Kernel+1

Published 2023-08-14 · Updated 2025-11-28 · CVE-2023-53593

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base 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 an issue where a folio lock is leaked when fscache is in use and a cache hit occurs during a read operation. This occurs because the cifs readpage worker function does not unlock the page as expected, leading to a deadlock. The issue requires a reboot to resolve. The vulnerable code is related to the cifs readpage from fscache and cifs readpage worker functions.

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

Exploit

Weakness Enumeration

CWE-833

Related Identifiers

BDU:2026-04587

CVE-2023-53593

SUSE-SU-2025:21040-1

SUSE-SU-2025:21052-1

SUSE-SU-2025:21056-1

SUSE-SU-2025:21064-1

SUSE-SU-2025:4057-1

SUSE-SU-2025:4128-1

SUSE-SU-2025:4132-1

SUSE-SU-2025:4140-1

SUSE-SU-2025:4141-1

SUSE-SU-2025:4189-1

SUSE-SU-2025:4301-1

Affected Products

Linux Kernel

Suse

References · 1171

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53593.json · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2025:4301-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4128-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4189-1 · Vendor Advisory
• https://git.kernel.org/stable/c/9e725386d4262ef23ae51993f04602bc535b5be2 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:4141-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53593 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53593 · Security Note
• https://git.kernel.org/stable/c/7a9fb689c1a1dc373887621a3bfa3810df0abde4 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:21052-1 · Vendor Advisory
• https://git.kernel.org/stable/c/69513dd669e243928f7450893190915a88f84a2b · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:4057-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-53593 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53593 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53593 · Vendor Advisory