5.5

CVE-2022-50266: kprobes: Fix check for probe enabled in kill_kprobe()

Analyzed
AliasesUBUNTU-CVE-2022-50266DEBIAN-CVE-2022-50266
Published 15-09-2025Last modified 23-05-2026

Vulnerability summary

CVE-2022-50266 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.16%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 5 · Related 5
SUSE-SU-2025:03614-1SUSE-SU-2025:03615-1SUSE-SU-2025:03628-1SUSE-SU-2025:3716-1SUSE-SU-2025:3761-1

Timeline

  1. 15-09-2025
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.15% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu124 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 3031313eb3d549b7ad6f9fbcc52ba04412e3eb9e, < f20a067f13106565816b4b6a6b665b2088a63824 | ≥ 3031313eb3d549b7ad6f9fbcc52ba04412e3eb9e, < c909985dd0c0f74b61e3f8f0e04bf8aa9c8b97c7 | ≥ 3031313eb3d549b7ad6f9fbcc52ba04412e3eb9e, < 0c76ef3f26d5ef2ac2c21b47e7620cff35809fbb | 3c5f8d371b7fef3e3714c4a062c7f3b4aa41d122 | 9b55d84deec88c02b053a819acf08a6d471dda02 | 2295608b44c91df767a5c68027f9c9e52ecb28e7 | ce7ff920092130f249b75f9fe177edb3362fefe8 | 3995f7a60feceba6c8f762f4aff3184f90a1291d | 247c62ebdfae450bb76dd89cd4724df6be07df75 | ≥ 4.4.238, < 4.5 | ≥ 4.9.238, < 4.10 | ≥ 4.14.200, < 4.15 | ≥ 4.19.149, < 4.20 | ≥ 5.4.69, < 5.5 | ≥ 5.8.13, < 5.9 | 5.9
  • linux_kernel≥ 4.4.238, < 4.5 | ≥ 4.9.238, < 4.10 | ≥ 4.14.200, < 4.15 | ≥ 4.19.149, < 4.20 | ≥ 5.4.69, < 5.5 | ≥ 5.8.13, < 5.9 | ≥ 5.9.1, < 6.0.16 | ≥ 6.1, < 6.1.2 | 5.9 | 5.9:rc7 | 5.9:rc8
Debian1 product
  • linux< 6.1.4-1

3 vendors · 127 products

References

7 links