CVE-2026-93828
exfat: fix handling of damaged volume in exfat_create_upcase_table()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 24, 2026 |
| Last Updated | Oct 30, 2026 |
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Affected Versions
Linux / Linux
370e812b3ec190fa492c9fd5a80c38b086d105c0 < 091ca992218105a050af0b863337e02a2d518b2f 370e812b3ec190fa492c9fd5a80c38b086d105c0 < 29723256fccf46e55c2a44bd6b8345bef7ba079b 370e812b3ec190fa492c9fd5a80c38b086d105c0 < 60ace93811609e4dd883e9de5fb4462ed834160a 370e812b3ec190fa492c9fd5a80c38b086d105c0 < 2cc0b612343638057ef321ce735201a7c2f52f25 370e812b3ec190fa492c9fd5a80c38b086d105c0 < 20dd3185d13865214ff25b0bf7b931e8d73be1ac
Linux / Linux
5.7
References
git.kernel.org: https://git.kernel.org/stable/c/091ca992218105a050af0b863337e02a2d518b2f git.kernel.org: https://git.kernel.org/stable/c/29723256fccf46e55c2a44bd6b8345bef7ba079b git.kernel.org: https://git.kernel.org/stable/c/60ace93811609e4dd883e9de5fb4462ed834160a git.kernel.org: https://git.kernel.org/stable/c/2cc0b612343638057ef321ce735201a7c2f52f25 git.kernel.org: https://git.kernel.org/stable/c/20dd3185d13865214ff25b0bf7b931e8d73be1ac