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.
Affected versions
Linux kernel versions
5.7
and later are affected. Fixed in
6.12.111,
6.18.53,
7.2
and their respective stable series.
References
3 totalFrequently asked questions
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What is CVE-2026-93828?
CVE-2026-93828 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.7 onward and has been patched in 6.12.111, 6.18.53 and 7.2. CVE-2026-93828 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-93828?
Yes. CVE-2026-93828 has been patched. Fixed versions include 6.12.111, 6.18.53 and 7.2. If you are running Linux kernel 5.7 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-93828 actively exploited?
No. CVE-2026-93828 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.