CVE - CVE-2024-38543

CVE-ID
CVE-2024-38543	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/1a21fdeea502658e315bd939409b755974f4fb64 URL:https://git.kernel.org/stable/c/1a21fdeea502658e315bd939409b755974f4fb64 MISC:https://git.kernel.org/stable/c/3b20d18f475bd17309db640dbe7d7c7ebb5bc2bc URL:https://git.kernel.org/stable/c/3b20d18f475bd17309db640dbe7d7c7ebb5bc2bc MISC:https://git.kernel.org/stable/c/65e528a69cb3ed4a286c45b4afba57461c8b5b33 URL:https://git.kernel.org/stable/c/65e528a69cb3ed4a286c45b4afba57461c8b5b33 MISC:https://git.kernel.org/stable/c/c2af060d1c18beaec56351cf9c9bcbbc5af341a3 URL:https://git.kernel.org/stable/c/c2af060d1c18beaec56351cf9c9bcbbc5af341a3 MISC:https://git.kernel.org/stable/c/ce47e8ead9a72834cc68431d53f8092ce69bebb7 URL:https://git.kernel.org/stable/c/ce47e8ead9a72834cc68431d53f8092ce69bebb7
Assigning CNA
kernel.org
Date Record Created
20240618	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240618)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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