CVE-2025-37863

Published: May 10, 2025Last modified: May 10, 2025

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.

Status

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