CVE-2025-37863

5.5 mediumEPSS 0.3%

Medium (5.5) in linux linux kernel. EPSS 0.3% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: ovl: don't allow datadir only In theory overlayfs could support upper layer directly referring to a data layer, but there's no current use case for this. Originally, when data-only layers were introduced, this wasn't allowed, only introduced by the "datadir+" feature, but without actually handling this case, resulting in an Oops. Fix by disallowing datadir without lowerdir.

Severity

CVSS 3.1

5.5 medium

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 20% of CVEs (scores of 2026-10-31)
Published: 2025-05-09
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

linux:linux_kernel

References

https://git.kernel.org/stable/c/0874b629f65320778e7e3e206177770666d9db18
https://git.kernel.org/stable/c/21d2ffb0e9838a175064c22f3a9de97d1f56f27d
https://git.kernel.org/stable/c/b9e3579213ba648fa23f780e8d53e99011c62331
https://git.kernel.org/stable/c/eb3a04a8516ee9b5174379306f94279fc90424c4

Check your stack JSON