CVE-2025-37863
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.
Does this matter?
Lower severity and a low EPSS score (0.27%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.27% probability · 19th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/0874b629f65320778e7e3e206177770666d9db18Patch
- https://git.kernel.org/stable/c/21d2ffb0e9838a175064c22f3a9de97d1f56f27dPatch
- https://git.kernel.org/stable/c/b9e3579213ba648fa23f780e8d53e99011c62331Patch
- https://git.kernel.org/stable/c/eb3a04a8516ee9b5174379306f94279fc90424c4Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.