PT-2025-8100 · Linux+1 · Linux Kernel+1

Published 2022-01-01 · Updated 2026-05-26 · CVE-2022-49172

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

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

Description A issue in the Linux kernel has been resolved, related to non-access data TLB cache flush faults on parisc architecture. When a page is not present, non-access data TLB faults occur from the fdc and fic instructions in flush user dcache range asm and flush user icache range asm, potentially leading to memory corruption. These faults also affect performance, especially on pa8800/pa8900 processors and earlier models. The problem is fixed by using flush cache pages() which flushes the cache using a tmp alias mapping.

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

Exploit

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

BDU:2026-02249

CVE-2022-49172

Affected Products

Debian

Linux Kernel

References · 20

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49172.json · Exploit
• https://git.kernel.org/stable/c/b3d6adb3a49d82e4e557c5fc16f50c9ff731da5d · Patch
• https://security-tracker.debian.org/tracker/CVE-2022-49172 · Vendor Advisory
• https://git.kernel.org/stable/c/f839e5f1cef36ce268950c387129b1bfefdaebc9 · Patch
• https://osv.dev/vulnerability/CVE-2022-49172 · Vendor Advisory
• https://git.kernel.org/stable/c/ddca4b82027e2a66333dd40fab21a4beff435c7e · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49172 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49172 · Security Note
• https://cve.org/CVERecord?id=CVE-2022-49172 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49172 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2022-49172 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-02249 · Security Note
• https://ubuntu.com/security/CVE-2022-49172 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2022-49172 · Vendor Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note