CVE-2022-49715: irqchip/gic-v3: Fix refcount leak in gic_populate_ppi_partitions
First published: Wed Feb 26 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v3: Fix refcount leak in gic_populate_ppi_partitions of_find_node_by_phandle() 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 | >=4.7<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/e824482e2c5edacc961b7dd30a92fd47606c3036
- https://git.kernel.org/stable/c/8d884c08eeb83142a7173cb46bcff0434ec42cf1
- https://git.kernel.org/stable/c/506a88a5bf261d76a5214c0338a320f2214c67ac
- https://git.kernel.org/stable/c/cc5984cf270b69d03f9f4b27063e535036c659e9
- https://git.kernel.org/stable/c/c136c2924a59a399aa789858cfb320d481964fb7
- https://git.kernel.org/stable/c/fa1ad9d4cc47ca2470cd904ad4519f05d7e43a2b
Frequently Asked Questions
What is the severity of CVE-2022-49715?
CVE-2022-49715 is categorized as medium severity due to a refcount leak in the GICv3 IRQ chip handling.
How do I fix CVE-2022-49715?
To fix CVE-2022-49715, update the Linux kernel to a version that incorporates the patch addressing the refcount leak.
Which versions of the Linux Kernel are affected by CVE-2022-49715?
CVE-2022-49715 affects multiple versions of the Linux kernel prior to the patch that resolves the refcount leak.
What systems are impacted by CVE-2022-49715?
Any system running an affected version of the Linux kernel utilizing the GICv3 IRQ chip can be impacted by CVE-2022-49715.
Is CVE-2022-49715 exploitable?
CVE-2022-49715 can potentially be exploited in certain conditions, leading to memory management issues.
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