CVE-2026-93828

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.

• https://git.kernel.org/stable/c/20dd3185d13865214ff25b0bf7b931e8d73be1ac
• https://git.kernel.org/stable/c/2cc0b612343638057ef321ce735201a7c2f52f25
• https://git.kernel.org/stable/c/60ace93811609e4dd883e9de5fb4462ed834160a

Published

Sep 24, 2026

Last Modified

Sep 25, 2026

Status

Received

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