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CVE-2023-53695

udf: Detect system inodes linked into directory hierarchy

HIGH
7.8
CVSS Score
Published: October 22, 2025 at 01:23 PM UTC
Updated: October 28, 2026 at 07:10 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
3.17.23.186174c2eb8ecef271159bdcde460ce8af54d8f72f801c7a20d255e300ab51a6fcb1d0e218d136b16f
Vendor states this is fixed in 1dc71eeb198a8daa17d0c995998a53b0b749a158 (fixed)
Vendor states this is fixed in 1f328751b65c49c13a312d67a3bf27766b85baf7 (fixed)
Vendor states this is fixed in 37e74003d81e79457535cbbdfa1603431c03fac0 (fixed)
Vendor states this is fixed in 85a37983ec69cc9fcd188bc37c4de15ee326355a (fixed)
Vendor states this is fixed in 9e3b5ef7d02eaa6553e79b4af9bd99227280f245 (fixed)
Vendor states this is fixed in a44ec34b90440ada190924f5908b97026504fdcd (fixed)
Vendor states this is fixed in d747b31e2925a2f384e7dd1901a2e5bc5f984ed8 (fixed)
Vendor states this is fixed in 3.18 (unaffected)
Vendor states this is fixed in 4.19.278 (unaffected)
Vendor states this is fixed in 5.10.173 (unaffected)
Vendor states this is fixed in 5.15.99 (unaffected)
Vendor states this is fixed in 5.4.235 (unaffected)
Vendor states this is fixed in 6.1.16 (unaffected)
Vendor states this is fixed in 6.2.3 (unaffected)
Vendor states this is fixed in 6.3 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (7)

Source: cverecord
https://git.kernel.org/stable/c/1dc71eeb198a8daa17d0c995998a53b0b749a158
Source: cverecord
https://git.kernel.org/stable/c/d747b31e2925a2f384e7dd1901a2e5bc5f984ed8
Source: cverecord
https://git.kernel.org/stable/c/a44ec34b90440ada190924f5908b97026504fdcd
Source: cverecord
https://git.kernel.org/stable/c/37e74003d81e79457535cbbdfa1603431c03fac0
Source: cverecord
https://git.kernel.org/stable/c/1f328751b65c49c13a312d67a3bf27766b85baf7
Source: cverecord
https://git.kernel.org/stable/c/9e3b5ef7d02eaa6553e79b4af9bd99227280f245
Source: cverecord
https://git.kernel.org/stable/c/85a37983ec69cc9fcd188bc37c4de15ee326355a

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusDEFERRED

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