5.5

CVE-2022-50148: kernfs: fix potential NULL dereference in __kernfs_remove

Analyzed
AliasesUBUNTU-CVE-2022-50148DEBIAN-CVE-2022-50148
Published 18-06-2025Last modified 11-05-2026

Vulnerability summary

CVE-2022-50148 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8.8% 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
0.19%
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 3
RHSA-2023:2458RHSA-2023:7077RHSA-2024:1404

Timeline

  1. 18-06-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: kernfs: fix potential NULL dereference in __kernfs_remove When lockdep is enabled, lockdep_assert_held_write would cause potential NULL pointer dereference. Fix the following smatch warnings: fs/kernfs/dir.c:1353 __kernfs_remove() warn: variable dereferenced before check 'kn' (see line 1346)

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

9%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.19% 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.

Ubuntu77 products
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
  • linux-aws-5.19All versions (No fix recorded)
Linux2 products
  • linux≥ 393c3714081a53795bbff0e985d24146def6f57f, < b871986d9d3071f5082664ac274d93f08db257cd | ≥ 393c3714081a53795bbff0e985d24146def6f57f, < 4a9f35b8729c5bf13ea671c908c17ed74c48fc50 | ≥ 393c3714081a53795bbff0e985d24146def6f57f, < 72b5d5aef246a0387cefa23121dd90901c7a691a | 5.17
  • linux_kernel≥ 5.17, < 5.18.18 | ≥ 5.19, < 5.19.2
Debian1 product
  • linux< 6.0.2-1

3 vendors · 80 products

References

6 links