PT-2024-28065 · Linux+10 · Linux Kernel+10
Duoming Zhou
·
Published
2024-03-12
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Updated
2026-05-26
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CVE-2024-38543
CVSS v2.0
7.5
High
| Vector | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A null pointer dereference bug can occur in the Linux kernel when the physical memory runs out, causing the
kcalloc() function in dmirror device evict chunk() to return null. If src pfns or dst pfns is dereferenced, this bug will happen. Moreover, if the kcalloc() fails, the pages mapping a chunk could not be evicted. To resolve this issue, a GFP NOFAIL flag is added to kcalloc(), and kcalloc() is switched to kvcalloc() to avoid failing allocations due to the lack of need for physically contiguous memory.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
DoS
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu