PT-2025-8098 · Linux+1 · Linux Kernel+1

Wenqing Liu · Published 2022-03-03 · Updated 2025-03-03 · CVE-2022-49170

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions 5.17-rc4 through 5.17-rc6

Description The issue is related to an array-index-out-of-bounds error in the fs/f2fs/segment.c file. This occurs when mounting and operating a corrupted image, resulting in an out-of-bounds access on the sbi->block count[] array. The root cause is a missed sanity check on curseg->alloc type.

Recommendations For Linux kernel versions 5.17-rc4 through 5.17-rc6, apply the fix to do a sanity check on curseg->alloc type to prevent the array-index-out-of-bounds error. As a temporary workaround, consider avoiding the use of corrupted images to minimize the risk of exploitation.

Exploit

Fix

Improper Validation of Array Index

Buffer Overflow

Weakness Enumeration

CWE-129

CWE-119

Related Identifiers

BDU:2026-01493

CVE-2022-49170

Affected Products

Astra Linux

Linux Kernel

References · 22

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49170.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2022-49170 · Security Note
• https://git.kernel.org/stable/c/c12765e3f129b144421c80d3383df885f85ee290 · Patch
• https://git.kernel.org/stable/c/f41ee8b91c00770d718be2ff4852a80017ae9ab3 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49170 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-49170 · Security Note
• https://git.kernel.org/stable/c/f68caedf264a95c0b02dfd0d9f92ac2637d5848a · Patch
• https://ubuntu.com/security/CVE-2022-49170 · Vendor Advisory
• https://git.kernel.org/stable/c/0748a0f7dcb9d9dddc80302d73ebcecef6782ef0 · Patch
• https://git.kernel.org/stable/c/498b7088db71f9707359448cd6800bbb1882f4c3 · Patch
• https://osv.dev/vulnerability/CVE-2022-49170 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49170 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-01493 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-49170 · Vendor Advisory
• https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.110 · Note