CVE-2022-49621: cpufreq: pmac32-cpufreq: Fix refcount leak bug
First published: Wed Feb 26 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: cpufreq: pmac32-cpufreq: Fix refcount leak bug In pmac_cpufreq_init_MacRISC3(), we need to add corresponding of_node_put() for the three node pointers whose refcount have been incremented by of_find_node_by_name().
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | <4.9.324 | |
| Linux Kernel | >=4.10<4.14.289 | |
| Linux Kernel | >=4.15<4.19.253 | |
| Linux Kernel | >=4.20<5.4.207 | |
| Linux Kernel | >=5.5<5.10.132 | |
| Linux Kernel | >=5.11<5.15.56 | |
| Linux Kernel | >=5.16<5.18.13 | |
| Linux Kernel | =5.19-rc1 | |
| Linux Kernel | =5.19-rc2 | |
| Linux Kernel | =5.19-rc3 | |
| Linux Kernel | =5.19-rc4 |
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Reference Links
- https://git.kernel.org/stable/c/4f242486bf46d314b2e3838cc64b56f008a3c4d7
- https://git.kernel.org/stable/c/37c16fc2cb13a13f3c0193bfc6f2edef7d7df7d7
- https://git.kernel.org/stable/c/4585890ab2dbf455d80e254d3d859d4c1e357920
- https://git.kernel.org/stable/c/8dda30f81c751b01cd71f2cfaeef26ad4393b1d1
- https://git.kernel.org/stable/c/3ea9dbf7c2f436952bca331c6f5d72f75aca224e
- https://git.kernel.org/stable/c/57289b6601fe78c09921599b042a0b430fb420ec
- https://git.kernel.org/stable/c/4513018d0bd739097570d26a7760551cba3deb56
- https://git.kernel.org/stable/c/ccd7567d4b6cf187fdfa55f003a9e461ee629e36
Frequently Asked Questions
What is the severity of CVE-2022-49621?
The severity of CVE-2022-49621 is classified as moderate due to a refcount leak bug in the Linux kernel.
How do I fix CVE-2022-49621?
To fix CVE-2022-49621, update your Linux kernel to the latest version that addresses this refcount leak issue.
Which versions of the Linux kernel are affected by CVE-2022-49621?
CVE-2022-49621 affects Linux kernel versions prior to 5.19-rc5.
Is CVE-2022-49621 a remote or local vulnerability?
CVE-2022-49621 is considered a local vulnerability since it requires local access to exploit.
What is the impact of exploiting CVE-2022-49621?
Exploiting CVE-2022-49621 may lead to resource leaks, potentially degrading system performance or stability.
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