CVEvulnerability
CVE-2026-93828
- Status
- Received
- Published
- 2026-09-24
- Last modified
- 2026-10-21
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
In the Linux kernel, the following vulnerability has been resolved:
exfat: fix handling of damaged volume in exfat_create_upcase_table()
When the size of the upcase table is set to zero in the dentry for any
reason(e.g. corrupted media or misbehaving device), an integer overflow
causes the module to loop indefinitely.
If the size of the upcase table is read zero, do not attempt to load the
table. Instead, fallback to loading the default upcase table. If the
size of the upcase table is zero or no upcase table is found, raise
exfat_fs_error() to mark the volume read-only.
References
- https://git.kernel.org/stable/c/20dd3185d13865214ff25b0bf7b931e8d73be1ac git.kernel.org
- https://git.kernel.org/stable/c/29723256fccf46e55c2a44bd6b8345bef7ba079b git.kernel.org
- https://git.kernel.org/stable/c/2cc0b612343638057ef321ce735201a7c2f52f25 git.kernel.org
- https://git.kernel.org/stable/c/60ace93811609e4dd883e9de5fb4462ed834160a git.kernel.org