CVE-2024-58069: rtc: pcf85063: fix potential OOB write in PCF85063 NVMEM read
First published: Thu Mar 06 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: rtc: pcf85063: fix potential OOB write in PCF85063 NVMEM read The nvmem interface supports variable buffer sizes, while the regmap interface operates with fixed-size storage. If an nvmem client uses a buffer size less than 4 bytes, regmap_read will write out of bounds as it expects the buffer to point at an unsigned int. Fix this by using an intermediary unsigned int to hold the value.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | >=5.2<5.4.291 | |
| Linux Kernel | >=5.5<5.10.235 | |
| Linux Kernel | >=5.11<5.15.179 | |
| Linux Kernel | >=5.16<6.1.129 | |
| Linux Kernel | >=6.2<6.6.76 | |
| Linux Kernel | >=6.7<6.12.13 | |
| Linux Kernel | >=6.13<6.13.2 |
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Reference Links
- https://git.kernel.org/stable/c/c72b7a474d3f445bf0c5bcf8ffed332c78eb28a1
- https://git.kernel.org/stable/c/9adefa7b9559d0f21034a5d5ec1b55840c9348b9
- https://git.kernel.org/stable/c/e5e06455760f2995b16a176033909347929d1128
- https://git.kernel.org/stable/c/517aedb365f2c94e2d7e0b908ac7127df76203a1
- https://git.kernel.org/stable/c/3ab8c5ed4f84fa20cd16794fe8dc31f633fbc70c
- https://git.kernel.org/stable/c/21cd59fcb9952eb7505da2bdfc1eb9c619df3ff4
- https://git.kernel.org/stable/c/6f2a8ca9a0a38589f52a7f0fb9425b9ba987ae7c
- https://git.kernel.org/stable/c/e5536677da803ed54a29a446515c28dce7d3d574
Frequently Asked Questions
What is the severity of CVE-2024-58069?
CVE-2024-58069 has a low severity level as it pertains to an out-of-bounds write vulnerability in the Linux kernel's PCF85063 NVMEM read.
How do I fix CVE-2024-58069?
To fix CVE-2024-58069, update your Linux kernel to a patched version where the vulnerability has been resolved.
What systems are affected by CVE-2024-58069?
CVE-2024-58069 affects the Linux kernel, specifically the components dealing with the PCF85063 NVMEM interface.
What are the potential impacts of CVE-2024-58069?
The potential impacts include data corruption or system instability due to the out-of-bounds write issue.
Has CVE-2024-58069 been exploited in the wild?
As of now, there are no public reports of CVE-2024-58069 being exploited in the wild.
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