7.8

CVE-2023-52436: f2fs: explicitly null-terminate the xattr list

Modified
AliasesUBUNTU-CVE-2023-52436DEBIAN-CVE-2023-52436
Published 20-02-2024Last modified 15-08-2026

Vulnerability summary

CVE-2023-52436 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 23% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.30%
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 14 · Related 12
DLA-3840-1DLA-3841-1USN-6688-1USN-6724-1USN-6724-2USN-6725-1

Timeline

  1. 20-02-2024
    PublishedVulnerability first disclosed.
  2. 15-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: f2fs: explicitly null-terminate the xattr list When setting an xattr, explicitly null-terminate the xattr list. This eliminates the fragile assumption that the unused xattr space is always zeroed.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.30%

Chance of exploitation in the next 30 days

Percentile

23%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.30% 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.

Ubuntu116 products
  • linuxAll versions (No fix recorded) | < 4.4.0-257.291 | < 4.15.0-227.239 | < 5.4.0-176.196 | < 5.15.0-102.112
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.4.0-1134.140 | < 4.4.0-1172.187 | < 4.15.0-1170.183 | < 5.4.0-1122.132 | < 5.15.0-1057.63
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ af48b85b8cd3fbb12c9b6759c16db6d69c0b03da, < 16ae3132ff7746894894927c1892493693b89135 | ≥ af48b85b8cd3fbb12c9b6759c16db6d69c0b03da, < 12cf91e23b126718a96b914f949f2cdfeadc7b2a | ≥ af48b85b8cd3fbb12c9b6759c16db6d69c0b03da, < 3e47740091b05ac8d7836a33afd8646b6863ca52 | ≥ af48b85b8cd3fbb12c9b6759c16db6d69c0b03da, < 32a6cfc67675ee96fe107aeed5af9776fec63f11 | ≥ af48b85b8cd3fbb12c9b6759c16db6d69c0b03da, < 5de9e9dd1828db9b8b962f7ca42548bd596deb8a | ≥ af48b85b8cd3fbb12c9b6759c16db6d69c0b03da, < 2525d1ba225b5c167162fa344013c408e8b4de36 | ≥ af48b85b8cd3fbb12c9b6759c16db6d69c0b03da, < f6c30bfe5a49bc38cae985083a11016800708fea | ≥ af48b85b8cd3fbb12c9b6759c16db6d69c0b03da, < e26b6d39270f5eab0087453d9b544189a38c8564 | 3.8
  • linux_kernel< 4.19.306 | ≥ 4.20.0, < 5.4.268 | ≥ 5.5.0, < 5.10.209 | ≥ 5.11.0, < 5.15.148 | ≥ 5.16.0, < 6.1.74 | ≥ 6.2.0, < 6.6.13 | ≥ 6.7.0, < 6.7.1
Debian1 product
  • linux< 6.1.76-1 | < 6.6.13-1

3 vendors · 119 products

References

26 links
Show all 26 references