CVE-2025-21830 — Improper Input Validation in Linux

CWE-20 — Improper Input Validation57 documents6 sources
Severity
5.5MEDIUMNVD
OSV8.8OSV7.8OSV7.1OSV5.9
EPSS
0.0%
top 97.49%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
LinuxLinux KernelDebian Linux+1 more
Timeline
PublishedMar 6
Latest updateSep 3

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages6 packages

▶NVDlinux/linux_kernel5.13 — 5.15.179+4
▶Debianlinux/linux_kernel< 6.1.129-1+2
▶Ubuntulinux/linux_kernel< 5.15.0-140.150+1
▶CVEListV5linux/linuxcb2c7d1a1776057c9a1f48ed1250d85e94d4850d — a1fccf6b72b56343dd4f2d96b008147f9951eebd+6
▶debiandebian/linux< linux 6.1.129-1 (bookworm)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

28
OSV
linux-azure, linux-azure-6.8, linux-azure-nvidia vulnerabilities↗2025-09-03
▶
OSV
linux-raspi vulnerabilities↗2025-07-24
▶
OSV
linux-raspi-realtime vulnerabilities↗2025-07-24
▶
OSV
linux-gcp, linux-gcp-6.8 vulnerabilities↗2025-07-22
▶
OSV
linux-aws-6.8, linux-gke, linux-gkeop, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, linux-oracle, linux-oracle-6.8 vulnerabilities↗2025-07-22
▶

📋Vendor Advisories

28
Ubuntu
Linux kernel (Azure) vulnerabilities↗2025-09-03
▶
Ubuntu
Linux kernel (Raspberry Pi Real-time) vulnerabilities↗2025-07-24
▶
Ubuntu
Linux kernel (Raspberry Pi) vulnerabilities↗2025-07-24
▶
Ubuntu
Linux kernel (GCP) vulnerabilities↗2025-07-22
▶
Ubuntu
Linux kernel vulnerabilities↗2025-07-22
▶