CVE-2024-53148

comedi: Flush partial mappings in error case

Description

In the Linux kernel, the following vulnerability has been resolved: comedi: Flush partial mappings in error case If some remap_pfn_range() calls succeeded before one failed, we still have buffer pages mapped into the userspace page tables when we drop the buffer reference with comedi_buf_map_put(bm). The userspace mappings are only cleaned up later in the mmap error path. Fix it by explicitly flushing all mappings in our VMA on the error path. See commit 79a61cc3fc04 ("mm: avoid leaving partial pfn mappings around in error case").

N/A

CVSS

Severity:

EPSS 0.06%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/57f048c2d205b85e34282a9b0b0ae177e84c2f44
https://git.kernel.org/stable/c/b9322408d83accc8b96322bc7356593206288c56
https://git.kernel.org/stable/c/8797b7712de704dc231f9e821d8eb3b9aeb3a032
https://git.kernel.org/stable/c/16c507df509113c037cdc0ba642b9ab3389bd26c
https://git.kernel.org/stable/c/9b07fb464eb69a752406e78e62ab3a60bfa7b00d
https://git.kernel.org/stable/c/c6963a06ce5c61d3238751ada04ee1569663a828
https://git.kernel.org/stable/c/297f14fbb81895f4ccdb0ad25d196786d6461e00
https://git.kernel.org/stable/c/ce8f9fb651fac95dd41f69afe54d935420b945bd

Frequently Asked Questions

What is the severity of CVE-2024-53148?: CVE-2024-53148 has not yet been assigned a CVSS score.
How to fix CVE-2024-53148?: To fix CVE-2024-53148, 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-2024-53148 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2024-53148 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-2024-53148?: CVE-2024-53148 affects Linux Linux, Linux Linux.

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