CVE-2025-21830
CVE-2025-21830 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- EPSS exploit prediction: 0% (6th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-6215
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2025-21830?
- 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.
- How severe is CVE-2025-21830?
- CVE-2025-21830 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2025-21830 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-21830?
- CVE-2025-21830 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-21830?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-21830 have an EU (EUVD) identifier?
- Yes. CVE-2025-21830 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-6215.
- When was CVE-2025-21830 published?
- CVE-2025-21830 was published on 2025-03-06 and last updated on 2026-06-17.
References
- https://git.kernel.org/stable/c/0fde195a373ab1267e60baa9e1a703a97e7464cd
- https://git.kernel.org/stable/c/2569e65d2eb6ac1afe6cb6dfae476afee8b6771a
- https://git.kernel.org/stable/c/39bb3d56f1c351e76bb18895d0e73796e653d5c1
- https://git.kernel.org/stable/c/49440290a0935f428a1e43a5ac8dc275a647ff80
- https://git.kernel.org/stable/c/7d6121228959ddf44a4b9b6a177384ac7854e2f9
- https://git.kernel.org/stable/c/a1fccf6b72b56343dd4f2d96b008147f9951eebd
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
Affected products (1)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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