CVE-2024-57953: rtc: tps6594: Fix integer overflow on 32bit systems
First published: Thu Feb 27 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: rtc: tps6594: Fix integer overflow on 32bit systems The problem is this multiply in tps6594_rtc_set_offset() tmp = offset * TICKS_PER_HOUR; The "tmp" variable is an s64 but "offset" is a long in the (-277774)-277774 range. On 32bit systems a long can hold numbers up to approximately two billion. The number of TICKS_PER_HOUR is really large, (32768 * 3600) or roughly a hundred million. When you start multiplying by a hundred million it doesn't take long to overflow the two billion mark. Probably the safest way to fix this is to change the type of TICKS_PER_HOUR to long long because it's such a large number.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | >=6.8<6.12.13 | |
| Linux Kernel | >=6.13<6.13.2 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-57953?
CVE-2024-57953 has been classified as a medium severity vulnerability due to the potential for integer overflow on 32-bit systems.
How do I fix CVE-2024-57953?
To fix CVE-2024-57953, update your Linux kernel to version 6.12.14 or later, or 6.13.3 or later.
What systems are affected by CVE-2024-57953?
CVE-2024-57953 affects Linux kernel versions between 6.8 and 6.12.13 and between 6.13 and 6.13.2.
What is the impact of CVE-2024-57953?
The impact of CVE-2024-57953 could allow an attacker to exploit an integer overflow, potentially leading to unexpected behavior or system crashes.
Who discovered CVE-2024-57953?
CVE-2024-57953 was discovered and reported by the maintainers of the Linux kernel.
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