Integer overflow in Linux kernel - CVE-2026-43368
Published: May 9, 2026
Vulnerability identifier: #VU130820
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-43368
CWE-ID: CWE-190
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an integer overflow in the i915 GEM shmem scatterlist handling when populating a scatterlist table with folio-backed pages for a GEM shmem object of size 4 gb or more. A local user can trigger a page fault on a specially crafted large object to cause a denial of service.
The issue can occur if the total byte length recorded in a single scatterlist reaches or crosses the 4 gb limit, leading to an unexpected premature end of the object's backing pages.
How to mitigate CVE-2026-43368
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/029ae067431ab9d0fca479bdabe780fa436706ea
- https://git.kernel.org/stable/c/1c956f0fccc26fefcbb507516c49d1db41c40471
- https://git.kernel.org/stable/c/21a301f12d18797bf889c15497f922edfdaece3a
- https://git.kernel.org/stable/c/aeb7255531ba4a5c3a64938577170d08b78de399
- https://git.kernel.org/stable/c/eae4bf4107571283031db96ce132e951615e2ae4