CVE-2025-68212

Summary

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

VendorProductVersion RangeStatus
LinuxLinux37c4a9590e1efcae7749682239fc22a330d2d325 < acfde9400e611c8d2668f1c70053c4a1d6ecfc36affected
LinuxLinux37c4a9590e1efcae7749682239fc22a330d2d325 < 0778ac7df5137d5041783fadfc201f8fd55a1d9baffected
LinuxLinux6.15affected
LinuxLinux0 < 6.15unaffected
LinuxLinux6.17.10 <= 6.17.*unaffected
LinuxLinux6.18 <= *unaffected

Weaknesses

References