PT-2025-43117 · Linux+2 · Linux Kernel+2

Published 2023-05-23 · Updated 2025-12-04 · CVE-2023-53716

Positive Technologies (AI Summary)

CVSS v2.0

4.6

Medium

Base vector

AV:L/AC:L/Au:S/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A memory leak exists in the skb tstamp tx() function within the networking subsystem. A previous fix for zerocopy socket buffer (skb) leaks introduced a new leak when skb orphan frags rx() fails, causing the cloned skb to not be freed before the function returns. This issue was identified using Coverity Static Analysis Security Testing (SAST) by Synopsys, Inc. The commit 50749f2dd685 attempted to address previous memory leaks related to zerocopy skbs and TX timestamps.

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

Exploit

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

ALSA-2025_16880

BDU:2026-04006

CVE-2023-53716

RHSA-2023:6583

RHSA-2023_6583

SUSE-SU-2025:4149-1

SUSE-SU-2025:4320-1

Affected Products

Linux Kernel

Red Hat

Suse

References · 448

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53716.json · Exploit
• https://bdu.fstec.ru/vul/2026-04006 · Security Note
• https://osv.dev/vulnerability/CVE-2023-53716 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53716 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2023-53716 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4320-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53716 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:4149-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53716 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53716 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53716 · Vendor Advisory
• https://suse.com/security/cve/CVE-2023-53578 · Note
• https://bugzilla.suse.com/1251230 · Note
• https://suse.com/security/cve/CVE-2023-53581 · Note
• https://suse.com/security/cve/CVE-2023-52923 · Note