PT-2025-18508 · Linux+1 · Linux Kernel+1

Published 2022-11-17 · Updated 2025-05-02 · CVE-2022-49791

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 io uring, where a multishot accept request leak occurred. Having REQ F POLLED set does not guarantee that the request is executed as a multishot from the polling path. If the code incorrectly identifies a multishot issue, it can only ask to skip completion, resulting in a request leak. The issue is addressed by using issue flags to mark multipoll issues.

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

Exploit

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

BDU:2026-05943

CVE-2022-49791

Affected Products

Astra Linux

Linux Kernel

References · 15

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49791.json · Exploit
• https://ubuntu.com/security/CVE-2022-49791 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-49791 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49791 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49791 · Vendor Advisory
• https://git.kernel.org/stable/c/91482864768a874c4290ef93b84a78f4f1dac51b · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-49791 · Security Note
• https://cve.org/CVERecord?id=CVE-2022-49791 · Security Note
• https://git.kernel.org/stable/c/0e4626de856ef8f25ecd9c716e76d4f95ce95639 · Patch
• https://osv.dev/vulnerability/CVE-2022-49791 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-05943 · Security Note
• https://access.redhat.com/security/cve/cve-2022-49791 · Note
• https://twitter.com/CVEnew/status/1918014641474510916 · Twitter Post
• https://git.kernel.org/linus/91482864768a874c4290ef93b84a78f4f1dac51b · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note