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CVE-2025-21830

landlock: Handle weird files

MEDIUM
5.5
CVSS Score
Published: March 6, 2025 at 04:08 PM UTC
Updated: October 15, 2026 at 10:18 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: landlock: Handle weird files A corrupted filesystem (e.g. bcachefs) might return weird files. Instead of throwing a warning and allowing access to such file, treat them as regular files.

Affected

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

Linux Kernel· Linux
95%
5.13 ≤ v < 5.15.1795.16 ≤ v < 6.1.1296.13 ≤ v < 6.13.26.2 ≤ v < 6.6.766.7 ≤ v < 6.12.135.13cb2c7d1a1776057c9a1f48ed1250d85e94d4850d
Vendor states this is fixed in 0fde195a373ab1267e60baa9e1a703a97e7464cd (fixed)
Vendor states this is fixed in 2569e65d2eb6ac1afe6cb6dfae476afee8b6771a (fixed)
Vendor states this is fixed in 39bb3d56f1c351e76bb18895d0e73796e653d5c1 (fixed)
Vendor states this is fixed in 49440290a0935f428a1e43a5ac8dc275a647ff80 (fixed)
Vendor states this is fixed in 7d6121228959ddf44a4b9b6a177384ac7854e2f9 (fixed)
Vendor states this is fixed in a1fccf6b72b56343dd4f2d96b008147f9951eebd (fixed)
Vendor states this is fixed in 5.13 (unaffected)
Vendor states this is fixed in 5.15.179 (unaffected)
Vendor states this is fixed in 6.1.129 (unaffected)
Vendor states this is fixed in 6.12.13 (unaffected)
Vendor states this is fixed in 6.13.2 (unaffected)
Vendor states this is fixed in 6.14 (unaffected)
Vendor states this is fixed in 6.6.76 (unaffected)

References (8)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/0fde195a373ab1267e60baa9e1a703a97e7464cd
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/2569e65d2eb6ac1afe6cb6dfae476afee8b6771a
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/39bb3d56f1c351e76bb18895d0e73796e653d5c1
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/49440290a0935f428a1e43a5ac8dc275a647ff80
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7d6121228959ddf44a4b9b6a177384ac7854e2f9
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a1fccf6b72b56343dd4f2d96b008147f9951eebd
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
Source: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
https://cert-portal.siemens.com/productcert/html/ssa-784472.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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