PT-2025-53934 · Linux+2 · Linux Kernel+2

Published 2025-12-30 · Updated 2026-02-12 · CVE-2022-50816

Positive Technologies (AI Summary)

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.0.0-rc7-syzkaller-18095-gbbed346d5a96

Description The Linux kernel contained a flaw in the IPv6 tunnel implementation. Specifically, the code did not properly sanitize the Maximum Transmission Unit (MTU) value, potentially allowing a layer to set the device MTU to an underflowed value. This could lead to a kernel bug, as demonstrated by a syzbot report and a resulting panic when handling skbuffs (socket buffer structures). The issue was identified in the ip6 gre tunnel (dev:ip6gretap0) and related functions like ip6 tnl link config route(), ip6 tnl link config(), and ipip6 tunnel bind dev().

Recommendations Update to version 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 or a later version to address this issue.

Exploit

Related Identifiers

CVE-2022-50816

OESA-2026-1276

RHSA-2023:2458

RHSA-2023:7077

SUSE-SU-2026:0473-1

Affected Products

Centos

Linux Kernel

Red Hat

References · 332

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50816.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-68241 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-50846 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50816 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-50816 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-54218 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-54087 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2026:0473-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-71093 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-54110 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-50816 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-54283 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50816 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50885 · Security Note
• https://ubuntu.com/security/CVE-2022-50816 · Vendor Advisory