CVE-2022-50266 - CVE House
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Status published Medium CVE-2022-50266

kprobes: Fix check for probe enabled in kill_kprobe()

Vulnerability 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 reference problem. When the probe is enabled, if we do not disarm it, this problem still exists. Fix it by putting the probe enabled check before setting the KPROBE_FLAG_GONE flag.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Linux
Vulnerable Versions:
3031313eb3d549b7ad6f9fbcc52ba04412e3eb9e, 3c5f8d371b7fef3e3714c4a062c7f3b4aa41d122, 9b55d84deec88c02b053a819acf08a6d471dda02, 2295608b44c91df767a5c68027f9c9e52ecb28e7, ce7ff920092130f249b75f9fe177edb3362fefe8, 3995f7a60feceba6c8f762f4aff3184f90a1291d, 247c62ebdfae450bb76dd89cd4724df6be07df75, 4.4.238, 4.9.238, 4.14.200, 4.19.149, 5.4.69, 5.8.13, 5.9, 0, 6.0.16, 6.1.2, 6.2

Timeline

Official Publish: September 15th, 2025
Last Modified: May 23rd, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.