5.5

CVE-2022-50402: drivers/md/md-bitmap: check the return value of md_bitmap_get_counter()

Modified
AliasesUBUNTU-CVE-2022-50402DEBIAN-CVE-2022-50402
Published 18-09-2025Last modified 11-05-2026

Vulnerability summary

CVE-2022-50402 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 5.1% 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 (CVE.org)
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 6 · Related 5
RHSA-2023:2458SUSE-SU-2025:03614-1SUSE-SU-2025:03615-1SUSE-SU-2025:03628-1SUSE-SU-2025:3716-1SUSE-SU-2025:3761-1

Timeline

  1. 18-09-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: drivers/md/md-bitmap: check the return value of md_bitmap_get_counter() Check the return value of md_bitmap_get_counter() in case it returns NULL pointer, which will result in a null pointer dereference. v2: update the check to include other dereference

CVSS metrics

4 scores · 4 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 0.16% 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.

Ubuntu121 products
  • linuxAll versions (No fix recorded) | < 5.4.0-144.161 | < 5.15.0-69.76
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1097.105 | < 5.15.0-1033.37
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ d60b479d177a5735b6b4db6ee5280ef6653f50e7, < 21e9aac9a74d30907d44bae0d24c036cb3819406 | ≥ d60b479d177a5735b6b4db6ee5280ef6653f50e7, < 5d8d046f3dba939e74e2414f009df426700430ed | ≥ d60b479d177a5735b6b4db6ee5280ef6653f50e7, < 100caacfa0ed26e061954c90cdc835d42f709536 | ≥ d60b479d177a5735b6b4db6ee5280ef6653f50e7, < b621d17fe8b079574c773800148fb86907f3445d | ≥ d60b479d177a5735b6b4db6ee5280ef6653f50e7, < ff3b7e12bc9f50de05c9d82b5b79e23e5be888f1 | ≥ d60b479d177a5735b6b4db6ee5280ef6653f50e7, < 99bef41f8e8d1d52b5cb34f2f193f1346192752b | ≥ d60b479d177a5735b6b4db6ee5280ef6653f50e7, < 3bd548e5b819b8c0f2c9085de775c5c7bff9052f | 3.5
  • linux_kernel≥ 3.5, < 4.19.270 | ≥ 4.20, < 5.4.229 | ≥ 5.5, < 5.10.163 | ≥ 5.11, < 5.15.86 | ≥ 5.16, < 6.0.16 | ≥ 6.1, < 6.1.2
Debian1 product
  • linux< 6.1.4-1

3 vendors · 124 products

References

11 links
Show all 11 references