CVE-2022-49426

HIGH EPSS 19.2%
Published Feb 26, 20251y ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published Feb 26, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu-v3-sva: Fix mm use-after-free We currently call arm64_mm_context_put() without holding a reference to the mm, which can result in use-after-free. Call mmgrab()/mmdrop() to ensure the mm only gets freed after we unpinned the ASID.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
19.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 3

VendorProductVersionRange
linuxlinux_kernel*≥5.11  –  <5.15.46
linuxlinux_kernel*≥5.16  –  <5.17.14
linuxlinux_kernel*≥5.18  –  <5.18.3

References 4

  • git.kernel.org https://git.kernel.org/stable/c/9aa215450888cf29af0c479e14a712dc6b0c506c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cbd23144f7662b00bcde32a938c4a4057e476d68
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e3cbbdbff8a4db5d053c53fd71be62ccccdb52b0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fc90f13ea0dcd960e5002d204fa55cec4e0db2fa
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/9aa215450888cf29af0c479e14a712dc6b0c506c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cbd23144f7662b00bcde32a938c4a4057e476d68
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e3cbbdbff8a4db5d053c53fd71be62ccccdb52b0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fc90f13ea0dcd960e5002d204fa55cec4e0db2fa
    Patch