CVE-2024-38543
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-38543
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-38543.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-38543
- Downstream
- Related
- Published
- 2024-06-19T14:15:14Z
- Modified
- 2025-08-09T20:01:26Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
lib/testhmm.c: handle srcpfns and dst_pfns allocation failure
The kcalloc() in dmirrordeviceevictchunk() will return null if the physical memory has run out. As a result, if srcpfns 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 _GFPNOFAIL 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
-
- https://git.kernel.org/stable/c/1a21fdeea502658e315bd939409b755974f4fb64
- https://git.kernel.org/stable/c/3b20d18f475bd17309db640dbe7d7c7ebb5bc2bc
- https://git.kernel.org/stable/c/65e528a69cb3ed4a286c45b4afba57461c8b5b33
- https://git.kernel.org/stable/c/c2af060d1c18beaec56351cf9c9bcbbc5af341a3
- https://git.kernel.org/stable/c/ce47e8ead9a72834cc68431d53f8092ce69bebb7