5.5

CVE-2022-50020: ext4: avoid resizing to a partial cluster size

Modified
AliasesUBUNTU-CVE-2022-50020DEBIAN-CVE-2022-50020
Published 18-06-2025Last modified 11-05-2026

Vulnerability summary

CVE-2022-50020 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 11% 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
0.21%
0%100%
Low · +0.02 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 18 · Related 7
RHSA-2023:2458RHSA-2025:12752RHSA-2025:12753RHSA-2025:13776RHSA-2025:13805RHSA-2025:14054

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: ext4: avoid resizing to a partial cluster size This patch avoids an attempt to resize the filesystem to an unaligned cluster boundary. An online resize to a size that is not integral to cluster size results in the last iteration attempting to grow the fs by a negative amount, which trips a BUG_ON and leaves the fs with a corrupted in-memory superblock.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

Increase +0.02 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.

Ubuntu112 products
  • linuxAll versions (No fix recorded) | < 4.15.0-197.208 | < 5.4.0-132.148 | < 5.15.0-53.59
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 4.15.0-1143.155 | < 5.4.0-1089.97 | < 5.15.0-1023.27
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ d77147ff443b255d82c907a632c825b2cc610b10, < 7bdfb01fc5f6b3696728aeb527c50386e0ee09a1 | ≥ d77147ff443b255d82c907a632c825b2cc610b10, < a6805b3dcf5cd41f2ae3a03dca43411135b99849 | ≥ d77147ff443b255d82c907a632c825b2cc610b10, < 80288883294c5b4ed18bae0d8bd9c4a12f297074 | ≥ d77147ff443b255d82c907a632c825b2cc610b10, < 72b850a2a996f72541172e7cf686d54a2b29bcd8 | ≥ d77147ff443b255d82c907a632c825b2cc610b10, < 0082e99a9074ff88eff729c70c93454c8588d8e1 | ≥ d77147ff443b255d82c907a632c825b2cc610b10, < 69cb8e9d8cd97cdf5e293b26d70a9dee3e35e6bd | 4.15
  • linux_kernel< 4.9.326 | ≥ 4.10, < 4.14.291 | ≥ 4.15, < 4.19.256 | ≥ 4.20, < 5.4.211 | ≥ 5.5, < 5.10.138 | ≥ 5.11, < 5.15.63 | ≥ 5.16, < 5.19.4
Debian1 product
  • linux< 6.0.2-1

3 vendors · 115 products

References

11 links
Show all 11 references