CVE-2025-68212

In the Linux kernel, the following vulnerability has been resolved:

fs: Fix uninitialized offp in statmount_string()

In statmount_string(), most flags assign an output offset pointer (offp) which is later updated with the string offset. However, the STATMOUNT_MNT_UIDMAP and STATMOUNT_MNT_GIDMAP cases directly set the struct fields instead of using offp. This leaves offp uninitialized, leading to a possible uninitialized dereference when *offp is updated.

Fix it by assigning offp for UIDMAP and GIDMAP as well, keeping the code path consistent.

Affected Software

References

• https://git.kernel.org/stable/c/0778ac7df5137d5041783fadfc201f8fd55a1d9b
• https://git.kernel.org/stable/c/acfde9400e611c8d2668f1c70053c4a1d6ecfc36