CVE-2022-49719: irqchip/gic/realview: Fix refcount leak in realview_gic_of_init
First published: Wed Feb 26 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: irqchip/gic/realview: Fix refcount leak in realview_gic_of_init of_find_matching_node_and_match() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | >=4.6<4.9.320 | |
| Linux Kernel | >=4.10<4.14.285 | |
| Linux Kernel | >=4.15<4.19.249 | |
| Linux Kernel | >=4.20<5.4.200 | |
| Linux Kernel | >=5.5<5.10.124 | |
| Linux Kernel | >=5.11<5.15.49 | |
| Linux Kernel | >=5.16<5.18.6 | |
| Linux Kernel | =5.19-rc1 | |
| Linux Kernel | =5.19-rc2 |
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Reference Links
- https://git.kernel.org/stable/c/87da903ce632d5689bef66d56ee5dae700d82104
- https://git.kernel.org/stable/c/486f68f85085d9b16ae097679b1486dcb1b6eb69
- https://git.kernel.org/stable/c/b634af84bc1edece4e63317b0ad95618dd3a8693
- https://git.kernel.org/stable/c/56526c3883fc7a1f5898b1d40a02c8b8685a5d92
- https://git.kernel.org/stable/c/e52a58b79f11755ea7e877015c4a1704303fa55f
- https://git.kernel.org/stable/c/5d38720661a4b9c87705c206a6081177ffb8ec1d
- https://git.kernel.org/stable/c/16b603cb8d34c2d917983918db1f88c8b831baaa
- https://git.kernel.org/stable/c/f4b98e314888cc51486421bcf6d52852452ea48b
Frequently Asked Questions
What is the severity of CVE-2022-49719?
CVE-2022-49719 has a severity rating of medium due to the potential for a reference count leak in the Linux kernel.
How do I fix CVE-2022-49719?
To fix CVE-2022-49719, you should update your Linux kernel to a version that includes the patch addressing this refcount leak.
What versions of the Linux kernel are affected by CVE-2022-49719?
CVE-2022-49719 affects multiple versions of the Linux kernel from 4.6 to 5.19-rc2.
What component of the Linux kernel is impacted by CVE-2022-49719?
CVE-2022-49719 impacts the IRQ chip functionality specifically related to RealView GIC initialization.
Is CVE-2022-49719 exploitative in nature?
While CVE-2022-49719 is categorized as a reference count leak, it is not inherently exploitative but can potentially lead to other issues in a vulnerable environment.
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