PT-2025-8055 · Linux+2 · Linux Kernel+2

Eric Dumazet · Published 2022-01-01 · Updated 2026-05-26 · CVE-2022-49127

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 use-after-free issue has been resolved in the Linux kernel. The problem occurs when ref tracker dir init() is called, and the struct ref tracker dir is marked as dead. To detect this issue, the dead status is tested from ref tracker alloc() and ref tracker free(). This detection is intended to identify buggy dev put()/dev hold() calls that happen too late in the netdevice dismantle process.

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:2025-10591

CVE-2022-49127

Affected Products

Astra Linux

Debian

Linux Kernel

References · 18

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49127.json · Exploit
• https://git.kernel.org/stable/c/e3ececfe668facd87d920b608349a32607060e66 · Patch
• https://cve.org/CVERecord?id=CVE-2022-49127 · Security Note
• https://bdu.fstec.ru/vul/2025-10591 · Security Note
• https://git.kernel.org/stable/c/3743c9de303fa36c2e2ca2522ab280c52bcafbd2 · Patch
• https://ubuntu.com/security/CVE-2022-49127 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49127 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49127 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49127 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-49127 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2022-49127 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-49127 · Vendor Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://lore.kernel.org/linux-cve-announce/2025022605-CVE-2022-49127-15e6@gregkh · Note
• https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.3 · Note