PT-2025-49722 · Linux · Linux Kernel

Published 2025-12-09 · Updated 2026-03-24 · CVE-2023-53831

Positive Technologies (AI Summary)

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.1.40-syzkaller

Description The Linux kernel contains an issue where the sk family is read only once in the sk mc loop() function. This was discovered by syzbot while testing with IPV6 ADDRFORM. The issue occurs within the networking subsystem and may lead to unexpected behavior.

Recommendations Update to a version newer than 6.1.40-syzkaller.

Exploit

Related Identifiers

CVE-2023-53831

SUSE-SU-2026:0278-1

SUSE-SU-2026:0281-1

SUSE-SU-2026:0293-1

SUSE-SU-2026:0315-1

SUSE-SU-2026:20477-1

SUSE-SU-2026:20498-1

SUSE-SU-2026:20845-1

SUSE-SU-2026:20876-1

Affected Products

Linux Kernel

References · 1462

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53831.json · Exploit
• https://osv.dev/vulnerability/CVE-2023-53831 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53831 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-53831 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53831 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:20845-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0281-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:20876-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0293-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53831 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2026:20498-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:20477-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53831 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2026:0278-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53831 · Vendor Advisory