5.5

CVE-2024-43857: f2fs: fix null reference error when checking end of zone

Modified
AliasesUBUNTU-CVE-2024-43857DEBIAN-CVE-2024-43857
Published 17-08-2024Last modified 11-05-2026

Vulnerability summary

CVE-2024-43857 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 11.2% 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 5 · Related 5
USN-7154-1USN-7154-2USN-7155-1USN-7156-1USN-7196-1

Timeline

  1. 17-08-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix null reference error when checking end of zone This patch fixes a potentially null pointer being accessed by is_end_zone_blkaddr() that checks the last block of a zone when f2fs is mounted as a single device.

CVSS metrics

3 scores · 3 sources · 1 version

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

Affected systems

Version check

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

Ubuntu93 products
  • linux< 6.8.0-50.51
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1020.22
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ e067dc3c6b9c419bac43c6a0be2d85f44681f863, < b98777309756ebe15cc9ad4e8ab64bbfaf878a3f | ≥ e067dc3c6b9c419bac43c6a0be2d85f44681f863, < 381cbe85592c78fbaeb3e770e3e9f3bfa3e67efb | ≥ e067dc3c6b9c419bac43c6a0be2d85f44681f863, < c82bc1ab2a8a5e73d9728e80c4c2ed87e8921a38 | 6.5
  • linux_kernel≥ 6.5, < 6.10.3
Debian1 product
  • linux< 6.10.3-1

3 vendors · 96 products

References

13 links
Show all 13 references