CVE-2023-2640 (published 2023-07-26T01:59:23.543Z)
On Ubuntu kernels carrying both c914c0e27eb0 and "UBUNTU: SAUCE: overlayfs: Skip permission checking for trusted.overlayfs.* xattrs", an unprivileged user may set privileged extended attributes on the mounted files, leading them to be set on the upper files without the appropriate security checks.
Affected products: Vendor: Canonical
Product: Ubuntu Kernel
Versions: 0, 0, 0