7.8

CVE-2023-53695: udf: Detect system inodes linked into directory hierarchy

Deferred
AliasesUBUNTU-CVE-2023-53695DEBIAN-CVE-2023-53695
Published 22-10-2025Last modified 15-10-2026

Vulnerability summary

CVE-2023-53695 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.6% 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
0.16%
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 5 · Related 5
SUSE-SU-2025:4111-1SUSE-SU-2025:4139-1SUSE-SU-2025:4149-1SUSE-SU-2025:4189-1SUSE-SU-2025:4320-1

Timeline

  1. 22-10-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: udf: Detect system inodes linked into directory hierarchy When UDF filesystem is corrupted, hidden system inodes can be linked into directory hierarchy which is an avenue for further serious corruption of the filesystem and kernel confusion as noticed by syzbot fuzzed images. Refuse to access system inodes linked into directory hierarchy and vice versa.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

6%

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

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.

Ubuntu120 products
  • linuxAll versions (No fix recorded) | < 5.4.0-152.169 | < 5.15.0-75.82
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1104.112 | < 5.15.0-1038.43
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.20-1
Linux1 product
  • linux≥ 6174c2eb8ecef271159bdcde460ce8af54d8f72f, < 1dc71eeb198a8daa17d0c995998a53b0b749a158 | ≥ 6174c2eb8ecef271159bdcde460ce8af54d8f72f, < d747b31e2925a2f384e7dd1901a2e5bc5f984ed8 | ≥ 6174c2eb8ecef271159bdcde460ce8af54d8f72f, < a44ec34b90440ada190924f5908b97026504fdcd | ≥ 6174c2eb8ecef271159bdcde460ce8af54d8f72f, < 37e74003d81e79457535cbbdfa1603431c03fac0 | ≥ 6174c2eb8ecef271159bdcde460ce8af54d8f72f, < 1f328751b65c49c13a312d67a3bf27766b85baf7 | ≥ 6174c2eb8ecef271159bdcde460ce8af54d8f72f, < 9e3b5ef7d02eaa6553e79b4af9bd99227280f245 | ≥ 6174c2eb8ecef271159bdcde460ce8af54d8f72f, < 85a37983ec69cc9fcd188bc37c4de15ee326355a | 801c7a20d255e300ab51a6fcb1d0e218d136b16f | ≥ 3.17.2, < 3.18 | 3.18

3 vendors · 122 products

References

11 links
Show all 11 references