CVE-2022-49424
5.5 · MEDIUMOverview
CVE-2022-49424 is a medium-severity vulnerability affecting linux linux_kernel. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
In the Linux kernel, the following vulnerability has been resolved:
iommu/mediatek: Fix NULL pointer dereference when printing dev_name
When larbdev is NULL (in the case I hit, the node is incorrectly set
iommus = <&iommu NUM>), it will cause device_link_add() fail and
kernel crashes when we try to print dev_name(larbdev).
Let's fail the probe if a larbdev is NULL to avoid invalid inputs from
dts.
It should work for normal correct setting and avoid the crash caused
by my incorrect setting.
Error log:
[ 18.189042][ T301] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000050
...
[ 18.344519][ T301] pstate: a0400005 (NzCv daif +PAN -UAO)
[ 18.345213][ T301] pc : mtk_iommu_probe_device+0xf8/0x118 [mtk_iommu]
[ 18.346050][ T301] lr : mtk_iommu_probe_device+0xd0/0x118 [mtk_iommu]
[ 18.346884][ T301] sp : ffffffc00a5635e0
[ 18.347392][ T301] x29: ffffffc00a5635e0 x28: ffffffd44a46c1d8
[ 18.348156][ T301] x27: ffffff80c39a8000 x26: fffff
Remediation
Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| linux | linux_kernel | >= 5.15.33, < 5.15.46 | Affected |
Frequently Asked Questions
What is CVE-2022-49424?
CVE-2022-49424 is a medium-severity vulnerability affecting linux linux_kernel. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2022-49424?
This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2022-49424?
Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2022-49424?
CyberStrike's AI-powered security agents can automatically detect CVE-2022-49424 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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