5.5

CVE-2024-53234: erofs: handle NONHEAD !delta[1] lclusters gracefully

Modified
AliasesUBUNTU-CVE-2024-53234DEBIAN-CVE-2024-53234
Published 27-12-2024Last modified 23-05-2026

Vulnerability summary

CVE-2024-53234 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 · 0.00 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 20 · Related 20
DLA-4076-1DSA-5860-1SUSE-SU-2025:0117-1SUSE-SU-2025:0153-1SUSE-SU-2025:0154-1SUSE-SU-2025:0289-1

Timeline

  1. 27-12-2024
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: erofs: handle NONHEAD !delta[1] lclusters gracefully syzbot reported a WARNING in iomap_iter_done: iomap_fiemap+0x73b/0x9b0 fs/iomap/fiemap.c:80 ioctl_fiemap fs/ioctl.c:220 [inline] Generally, NONHEAD lclusters won't have delta[1]==0, except for crafted images and filesystems created by pre-1.0 mkfs versions. Previously, it would immediately bail out if delta[1]==0, which led to inadequate decompressed lengths (thus FIEMAP is impacted). Treat it as delta[1]=1 to work around these legacy mkfs versions. `lclusterbits > 14` is illegal for compact indexes, error out too.

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

No change 0.00 pp

From 0.21% 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

No weakness data has been published for this record.

Affected systems

Version check

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

Ubuntu131 products
  • linuxAll versions (No fix recorded) | < 6.8.0-58.60
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.8.0-1027.29
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ d95ae5e25326092d61613acf98280270dde22778, < 75a0a6dde803e7a3af700da8da9a361b49f69eba | ≥ d95ae5e25326092d61613acf98280270dde22778, < f466641debcbea8bdf78d1b63a6270aadf9301bf | ≥ d95ae5e25326092d61613acf98280270dde22778, < 480c6c7b55aeacac800bc2a0d321ff53273045e5 | ≥ d95ae5e25326092d61613acf98280270dde22778, < daaf68fef4b2ff97928227630021d37b27a96655 | ≥ d95ae5e25326092d61613acf98280270dde22778, < 0bc8061ffc733a0a246b8689b2d32a3e9204f43c | 96a85becb811ca2ce21a21721f1544d342ae431e | 8c723eef989bc419585237daa467b787ddca5415 | ≥ 5.4.251, < 5.5 | ≥ 5.10.188, < 5.11 | 5.15
  • linux_kernel≥ 5.4.251, < 5.5 | ≥ 5.10.188, < 5.11 | ≥ 5.15, < 6.1.127 | ≥ 6.2, < 6.6.64 | ≥ 6.7, < 6.11.11 | ≥ 6.12, < 6.12.2
Debian1 product
  • linux< 6.1.128-1 | < 6.12.3-1

3 vendors · 134 products

References

22 links
Show all 22 references