CVE-2024-42242

mmc: sdhci: Fix max_seg_size for 64KiB PAGE_SIZE

Description

In the Linux kernel, the following vulnerability has been resolved: mmc: sdhci: Fix max_seg_size for 64KiB PAGE_SIZE blk_queue_max_segment_size() ensured: if (max_size < PAGE_SIZE) max_size = PAGE_SIZE; whereas: blk_validate_limits() makes it an error: if (WARN_ON_ONCE(lim->max_segment_size < PAGE_SIZE)) return -EINVAL; The change from one to the other, exposed sdhci which was setting maximum segment size too low in some circumstances. Fix the maximum segment size when it is too low.

References

Link	Tags
https://git.kernel.org/stable/c/bf78b1accef46efd9b624967cb74ae8d3c215a2b	patch
https://git.kernel.org/stable/c/63d20a94f24fc1cbaf44d0e7c0e0a8077fde0aef	patch

Frequently Asked Questions

What is the severity of CVE-2024-42242?: CVE-2024-42242 has been scored as a medium severity vulnerability.
How to fix CVE-2024-42242?: To fix CVE-2024-42242, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-42242 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2024-42242 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-42242?: CVE-2024-42242 affects Linux Linux, Linux Linux.

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Description

Category

CWE-770 – Allocation of Resources Without Limits or Throttling

References

Frequently Asked Questions