PT-2025-8398 · Linux+1 · Linux Kernel+1

Gao Xiang · Published 2022-05-17 · Updated 2025-02-28 · CVE-2022-49464

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 (affected versions not specified)

Description A buffer copy overflow issue has been identified in the Linux kernel, specifically in the erofs filesystem. The problem arises when the ztailpacking feature is used, causing a potential use-after-free error in the z erofs shifted transform function. This issue occurs because the tail pcluster may not be a complete filesystem block, leading to incorrect handling of uncompressed tail pcluster data. The error is triggered when the memcpy function is called, resulting in a read of size 4074 at a specific memory address.

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

Exploit

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2025-04427

CVE-2022-49464

Affected Products

Astra Linux

Linux Kernel

References · 18

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49464.json · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49464 · Vendor Advisory
• https://git.kernel.org/stable/c/4d53a625f29074e7b8236c2c0e0922edb7608df9 · Patch
• https://cve.org/CVERecord?id=CVE-2022-49464 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-49464 · Security Note
• https://bdu.fstec.ru/vul/2025-04427 · Security Note
• https://osv.dev/vulnerability/CVE-2022-49464 · Vendor Advisory
• https://git.kernel.org/stable/c/6b59e1907f58cf877c563dcf013159eb9f994b64 · Patch
• https://security-tracker.debian.org/tracker/CVE-2022-49464 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49464 · Vendor Advisory
• https://git.kernel.org/stable/c/dcbe6803fffd387f72b48c2373b5f5ed12a5804b · Patch
• https://ubuntu.com/security/CVE-2022-49464 · Vendor Advisory
• https://lore.kernel.org/linux-cve-announce/2025022601-CVE-2022-49464-7407@gregkh · Note
• https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.14 · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note