PT-2026-20420 · Linux · Linux Kernel

Published 2025-01-01 · Updated 2026-04-20 · CVE-2025-71228

Positive Technologies (AI Summary)

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

Description A flaw exists in the Linux kernel related to memory protection on LoongArch platforms. Specifically, the protection map[] was not correctly set for Virtual Memory Areas (VMAs) configured as VM NONE or VM SHARED. On 32-bit platforms, this resulted in pages becoming non-present, leading to a kernel page fault and system instability (Oops). The issue stemmed from using PAGE PROTNONE which is 0, causing incorrect memory protection settings. The fix involves setting the correct protection map[] by replacing PAGE PROTNONE with PAGE PRESENT.

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

Exploit

Related Identifiers

CVE-2025-71228

ECHO-9322-07F6-0397

Affected Products

Linux Kernel

References · 23

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71228.json · Exploit
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2025-71228 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-12-CVE-2025-71228 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-71228 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2025-71228 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-71228 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-71228 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-71228 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-71228 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-71228 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-71228 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2404-CVE-2025-71228 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2025-71228 · Vendor Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://twitter.com/CVEnew/status/2024138067729330438 · Twitter Post