PT-2025-37562 · Linux+3 · Linux Kernel+3

Published 2023-11-07 · Updated 2026-04-20 · CVE-2023-53198

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 A NULL dereference issue was identified and resolved in the Linux kernel's raw get next() function. This issue stemmed from parallel execution sequences potentially freeing a socket while another thread was iterating over it, leading to a general protection fault. The fix involves converting raw sockets to RCU and utilizing spinlocks for slow paths to prevent the NULL dereference. The code was modified to use hlist instead of hlist nulls for SOCK RAW, and sk for each rcu() for fast paths and sk for each() with spinlock for /proc/net/raw.

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

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALSA-2025_16880

BDU:2026-05938

CVE-2023-53198

RHSA-2023:6583

RHSA-2023_6583

Affected Products

Astra Linux

Linux Kernel

Red Hat

Red Os

References · 22

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53198.json · Exploit
• https://security-tracker.debian.org/tracker/CVE-2023-53198 · Vendor Advisory
• https://git.kernel.org/stable/c/b34056bedf04d08ef24f713a7f93bad1274a838d · Patch
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2023-53198 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-05938 · Security Note
• https://ubuntu.com/security/CVE-2023-53198 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53198 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2023-53198 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53198 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53198 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53198 · Vendor Advisory
• https://git.kernel.org/stable/c/0a78cf7264d29abeca098eae0b188a10aabc8a32 · Patch
• https://git.kernel.org/stable/c/67daeaecd70ef20ab540c21739d3f633734967a1 · Patch
• https://osv.dev/vulnerability/CVE-2023-53198 · Vendor Advisory
• https://access.redhat.com/security/cve/cve-2023-53198 · Note