vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2022-49426

iommu/arm-smmu-v3-sva: Fix mm use-after-free

HIGH
7.8
CVSS Score
Published: February 26, 2025 at 02:12 AM UTC
Updated: August 5, 2026 at 09:24 AM UTC
1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH7.8
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
5.11 ≤ v < 5.15.465.11 ≤ v < 5.17.145.11 ≤ v < 5.18.35.11 ≤ v < 5.195.16 ≤ v < 5.17.145.18 ≤ v < 5.18.332784a9562fb0518b12e9797ee2aec52214adf6f5.11
Vendor states this is fixed in 9aa215450888cf29af0c479e14a712dc6b0c506c (fixed)
Vendor states this is fixed in cbd23144f7662b00bcde32a938c4a4057e476d68 (fixed)
Vendor states this is fixed in e3cbbdbff8a4db5d053c53fd71be62ccccdb52b0 (fixed)
Vendor states this is fixed in fc90f13ea0dcd960e5002d204fa55cec4e0db2fa (fixed)
Vendor states this is fixed in 5.11 (unaffected)
Vendor states this is fixed in 5.15.46 (unaffected)
Vendor states this is fixed in 5.17.14 (unaffected)
Vendor states this is fixed in 5.18.3 (unaffected)
Vendor states this is fixed in 5.19 (unaffected)

References (4)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/9aa215450888cf29af0c479e14a712dc6b0c506c
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/cbd23144f7662b00bcde32a938c4a4057e476d68
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e3cbbdbff8a4db5d053c53fd71be62ccccdb52b0
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/fc90f13ea0dcd960e5002d204fa55cec4e0db2fa

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusANALYZED
CWE
CWE-416

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card