Integer overflow in Linux kernel - CVE-2026-93828
Published: September 25, 2026
Vulnerability identifier: #VU152065
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93828
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to an integer overflow in exfat_create_upcase_table() when processing an exFAT volume with an upcase table size of zero. A remote attacker can cause the kernel to process such a volume to trigger an infinite loop.
Affected software
Linux kernel
How to mitigate CVE-2026-93828
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3