Tracker / CVE-2024-38543
CVE-2024-38543
Medium 5.5
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.
Affected products and versions
| linux | linux_kernel · 5.8 → 6.1.93 |
|---|---|
| linux | linux_kernel · 6.2 → 6.6.33 |
| linux | linux_kernel · 6.7 → 6.8.12 |
| linux | linux_kernel · 6.9 → 6.9.3 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.