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.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

No data.

References
Link Providers
https://git.kernel.org/stable/c/9aa215450888cf29af0c479e14a712dc6b0c506c cve-icon cve-icon
https://git.kernel.org/stable/c/cbd23144f7662b00bcde32a938c4a4057e476d68 cve-icon cve-icon
https://git.kernel.org/stable/c/e3cbbdbff8a4db5d053c53fd71be62ccccdb52b0 cve-icon cve-icon
https://git.kernel.org/stable/c/fc90f13ea0dcd960e5002d204fa55cec4e0db2fa cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025022655-CVE-2022-49426-313d@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2022-49426 cve-icon
https://www.cve.org/CVERecord?id=CVE-2022-49426 cve-icon
History

Mon, 24 Mar 2025 20:15:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel

Tue, 04 Mar 2025 03:45:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Thu, 27 Feb 2025 19:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

 cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Thu, 27 Feb 2025 01:45:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Wed, 26 Feb 2025 02:45:00 +0000

Type Values Removed Values Added
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.
Title iommu/arm-smmu-v3-sva: Fix mm use-after-free
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-02-26T02:12:47.206Z

Updated: 2025-02-27T18:22:32.946Z

Reserved: 2025-02-26T02:08:31.569Z

Link: CVE-2022-49426

cve-icon Vulnrichment

Updated: 2025-02-27T18:16:12.353Z

cve-icon NVD

Status : Analyzed

Published: 2025-02-26T07:01:19.073

Modified: 2025-03-24T19:58:02.123

Link: CVE-2022-49426

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-02-26T00:00:00Z

Links: CVE-2022-49426 - Bugzilla