CVE-2022-49426

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

High · published February 26, 2025

CVSS v3.1
7.8
EPSS
0%
Percentile
20.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00288 · 20.2th percentile
Published
2025-02-26T02:12Z
EPSS history
Timeline
  • 26 FEB 02:12Z
    iommu/arm-smmu-v3-sva: Fix mm use-after-free
    cvelistv5