GHSA-3q6x-gxwh-88p9

GHSA-3q6x-gxwh-88p9 PUBLISHED CVSS 5.5 MEDIUM

Record from GitHub Advisory Database · Published June 19, 2024

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.

Risk scores

CVSS 3.1

5.5

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Timeline

Jun 19, 2024 CVE Published
Apr 10, 2026 Security Advisory

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vulnetix vdb fixes GHSA-3q6x-gxwh-88p9

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