PT-2025-49705 · Linux · Linux Kernel

Published 2025-12-09 · Updated 2025-12-09 · CVE-2022-50674

Positive Technologies (AI Summary)

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.0.0-rc3-rt15+ #8

Description The Linux kernel contains a flaw within the vdso subsystem, specifically in the vdso join timens() function. When a vfork system call is used, a NULL deference can occur because the mm->context.vdso info is NULL. This can lead to a kernel crash, as demonstrated by testing with the tools/testing/selftests/timens/vfork exec.c tool. The issue arises from the handling of the vdso information pointer in the vfork scenario.

Recommendations Update to a version of the Linux kernel newer than 6.0.0-rc3-rt15+ #8.

Exploit

Related Identifiers

CVE-2022-50674

Affected Products

Linux Kernel

References · 14

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50674.json · Exploit
• https://cve.org/CVERecord?id=CVE-2022-50674 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50674 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50674 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50674 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-50674 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-50674 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-50674 · Vendor Advisory
• https://twitter.com/CVEnew/status/1998225402528219406 · Twitter Post
• https://git.kernel.org/stable/c/df30c4feba51beeb138f3518c2421abc8cbda3c1 · Note
• https://git.kernel.org/stable/c/a8616d2dc193b6becc36b5f3cfeaa9ac7a5762f9 · Note
• https://git.kernel.org/linus/a8616d2dc193b6becc36b5f3cfeaa9ac7a5762f9 · Note
• https://git.kernel.org/stable/c/f2419a6fbb4caf8cf3fe0ac7e4cf2e28127d04b4 · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note