PT-2025-37494 · Linux+1 · Linux Kernel+1

Published 2025-09-15 · Updated 2026-04-20 · CVE-2022-50240

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.10.150-00001-gdc8dcf942daa

Description A use-after-free (UAF) vulnerability exists within the binder component of the Linux kernel. The vulnerability occurs due to a race condition between binder update page range() and vm area free() in munmap(), potentially leading to memory corruption. Specifically, accesses to alloc->vma within binder update page range() can race with the freeing of the vma in munmap(), resulting in a UAF condition. This issue is specific to stable kernel branches 5.4 and 5.10. Newer kernel releases have been refactored to avoid this issue by using vma lookup() instead of caching a pointer to the vma.

Recommendations Update to a kernel version newer than 5.10.150-00001-gdc8dcf942daa.

Exploit

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2022-50240

Affected Products

Astra Linux

Linux Kernel

References · 19

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50240.json · Exploit
• https://git.kernel.org/stable/c/925e6b6f82c9c80ab3c17acbde8d16f349da7d26 · Patch
• https://osv.dev/vulnerability/CVE-2022-50240 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50240 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-50240 · Security Note
• https://git.kernel.org/stable/c/622ef885a89ad04cfb76ee478fb44f051125d1f1 · Patch
• https://git.kernel.org/stable/c/a43cfc87caaf46710c8027a8c23b8a55f1078f19 · Patch
• https://ubuntu.com/security/CVE-2022-50240 · Vendor Advisory
• https://git.kernel.org/stable/c/1ec3f76a436d750fd5023caec5da0494fc2870d2 · Patch
• https://git.kernel.org/stable/c/015ac18be7de25d17d6e5f1643cb3b60bfbe859e · Patch
• https://git.kernel.org/stable/c/27a594bc7a7c8238d239e3cdbcf2edfa3bbe9a1b · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-50240 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2404-CVE-2022-50240 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-50240 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50240 · Vendor Advisory