PT-2025-25861 · Linux+4 · Linux Kernel+4

Published 2022-08-25 · Updated 2026-05-26 · CVE-2022-49935

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 vulnerability in the Linux kernel has been resolved. The issue is related to the dma-buf/dma-resv component, where a check was added to ensure that a new fence is really later than existing fences. Previously, it was assumed that a new fence was always newer than all existing fences. However, with the addition of an UAPI to explicit export/import, this assumption is no longer valid. Without this check, userspace could force the kernel into a use after free error.

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

Exploit

DoS

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

AZL-70208

BDU:2026-02031

CESA-2023_2951

CVE-2022-49935

RHSA-2023:2458

RHSA-2023:2951

RHSA-2023_2458

RHSA-2023_2951

SUSE-SU-2025:02264-1

SUSE-SU-2025:02321-1

SUSE-SU-2025:2264-1

SUSE-SU-2025_02264-1

Affected Products

Centos

Debian

Linux Kernel

Red Hat

Suse

References · 584

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49935.json · Exploit
• https://git.kernel.org/stable/c/c4c798fe98adceb642050819cb57cbc8f5c27870 · Patch
• https://ubuntu.com/security/CVE-2022-49935 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-49935 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-02031 · Security Note
• https://osv.dev/vulnerability/CVE-2022-49935 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-70208 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:02264-1 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2022-49935 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:02321-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-49935 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49935 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2022-49935 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49935 · Security Note
• https://git.kernel.org/stable/c/a3f7c10a269d5b77dd5822ade822643ced3057f0 · Patch