CVE-2022-50266 — NULL Pointer Dereference in Linux

CWE-476 — NULL Pointer DereferenceCWE-570 — Expression is Always False6 documents6 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 97.72%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
6
LinuxLinux KernelDebian Linux+3 more
Timeline
PublishedSep 15

Description

In the Linux kernel, the following vulnerability has been resolved: kprobes: Fix check for probe enabled in kill_kprobe() In kill_kprobe(), the check whether disarm_kprobe_ftrace() needs to be called always fails. This is because before that we set the KPROBE_FLAG_GONE flag for kprobe so that "!kprobe_disabled(p)" is always false. The disarm_kprobe_ftrace() call introduced by commit: 0cb2f1372baa ("kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler") to fix the NULL pointer refe…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages7 packages

▶NVDlinux/linux_kernel4.4.238 — 4.5+8
▶Debianlinux/linux_kernel< 6.1.4-1+2
▶CVEListV5linux/linux3031313eb3d549b7ad6f9fbcc52ba04412e3eb9e — f20a067f13106565816b4b6a6b665b2088a63824+9
▶debiandebian/linux< linux 6.1.4-1 (bookworm)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
OSV
CVE-2022-50266: In the Linux kernel, the following vulnerability has been resolved: kprobes: Fix check for probe enabled in kill_kprobe() In kill_kprobe(), the check↗2025-09-15
▶
GHSA
GHSA-gcqm-mw5p-q5gh: In the Linux kernel, the following vulnerability has been resolved: kprobes: Fix check for probe enabled in kill_kprobe() In kill_kprobe(), the chec↗2025-09-15
▶

📋Vendor Advisories

3
Red Hat
kernel: kprobes: Fix check for probe enabled in kill_kprobe()↗2025-09-15
▶
Microsoft
kprobes: Fix check for probe enabled in kill_kprobe()↗2025-09-09
▶
Debian
CVE-2022-50266: linux - In the Linux kernel, the following vulnerability has been resolved: kprobes: Fi...↗2022
▶
CVE-2022-50266 — NULL Pointer Dereference in Linux | cvebase