cve-2024-38543
Vulnerability from cvelistv5
Published
2024-06-19 13:35
Modified
2024-12-19 09:04
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: lib/test_hmm.c: handle src_pfns and dst_pfns allocation failure The kcalloc() in dmirror_device_evict_chunk() will return null if the physical memory has run out. As a result, if src_pfns or dst_pfns is dereferenced, the null pointer dereference bug will happen. Moreover, the device is going away. If the kcalloc() fails, the pages mapping a chunk could not be evicted. So add a __GFP_NOFAIL flag in kcalloc(). Finally, as there is no need to have physically contiguous memory, Switch kcalloc() to kvcalloc() in order to avoid failing allocations.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1a21fdeea502658e315bd939409b755974f4fb64Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3b20d18f475bd17309db640dbe7d7c7ebb5bc2bcPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/65e528a69cb3ed4a286c45b4afba57461c8b5b33Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c2af060d1c18beaec56351cf9c9bcbbc5af341a3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ce47e8ead9a72834cc68431d53f8092ce69bebb7Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1a21fdeea502658e315bd939409b755974f4fb64Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/3b20d18f475bd17309db640dbe7d7c7ebb5bc2bcPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/65e528a69cb3ed4a286c45b4afba57461c8b5b33Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c2af060d1c18beaec56351cf9c9bcbbc5af341a3Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ce47e8ead9a72834cc68431d53f8092ce69bebb7Patch
Impacted products
Vendor Product Version
Linux Linux Version: 5.8
Show details on NVD website

To clipboard 

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