CVE-2022-49426: iommu/arm-smmu-v3-sva: Fix mm use-after-free
First published: Wed Feb 26 2025(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | >=5.11<5.15.46 | |
| Linux Kernel | >=5.16<5.17.14 | |
| Linux Kernel | >=5.18<5.18.3 |
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Reference Links
Frequently Asked Questions
What is the impact of CVE-2022-49426?
CVE-2022-49426 can lead to a use-after-free vulnerability in the Linux kernel, potentially causing system crashes or security breaches.
Which versions of the Linux Kernel are affected by CVE-2022-49426?
CVE-2022-49426 affects Linux Kernel versions from 5.11 to 5.15.46, from 5.16 to 5.17.14, and from 5.18 to 5.18.3.
How can I resolve CVE-2022-49426 in my system?
To fix CVE-2022-49426, upgrade your Linux kernel to a version that includes the patch for this vulnerability.
What type of vulnerability is CVE-2022-49426 classified as?
CVE-2022-49426 is classified as a use-after-free vulnerability in the Linux kernel's IOMMU subsystem.
Is CVE-2022-49426 a serious threat to Linux systems?
Yes, CVE-2022-49426 is considered a serious threat as it may allow an attacker to execute arbitrary code or crash the system.
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