PT-2026-36420 · Linux · Linux Kernel

CVE-2026-31785 · Published 2026-03-24 · Updated 2026-05-01

Positive Technologies (AI Summary)

CVSS v2.0

7.7

High

Base vector

AV:A/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A flaw exists in the page fault handler where write or atomic access to read-only Virtual Memory Areas (VMAs) is not properly rejected. This issue is addressed in the xe pagefault service() function by adding logic to handle these access requests after the VMA lookup.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Improper Access Control

Buffer Overflow

Weakness Enumeration

CWE-284

CWE-119

Related Identifiers

BDU:2026-10735

CVE-2026-31785

Affected Products

Linux Kernel

References · 14

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31785.json · Exploit
• https://ubuntu.com/security/CVE-2026-31785 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-31785 · Security Note
• https://git.kernel.org/stable/c/6d192b4f2d644d15d9a9f1d33dab05af936f6540 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-31785 · Security Note
• https://git.kernel.org/stable/c/b656f040ed4ed2074dfb78072745b41d44368be0 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31785 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31785 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-31785 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-10735 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-31785 · Vendor Advisory
• https://lore.kernel.org/linux-cve-announce/2026050152-CVE-2026-31785-e014@gregkh · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://git.kernel.org/linus/6d192b4f2d644d15d9a9f1d33dab05af936f6540 · Note