Improper Validation of Specified Quantity in Input in Linux kernel - CVE-2026-93237
Published: September 25, 2026
Vulnerability identifier: #VU152161
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93237
CWE-ID: CWE-1284
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to corrupt page tables and cause a denial of service.
The vulnerability exists due to improper bounds checking in LoongArch physical memory range handling when allocating ZONE_DEVICE regions. A local privileged user can trigger allocation of a ZONE_DEVICE region outside the vmemmap window to corrupt page tables and cause a denial of service.
The issue affects configurations where cpu_pabits is lower than MAX_PHYSMEM_BITS.
Affected software
Linux kernel
How to mitigate CVE-2026-93237
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3