PT-2024-10460 · Linux+6 · Linux Kernel+6
Mahesh Salgaonkar
+1
·
Published
2024-07-30
·
Updated
2026-03-14
·
CVE-2024-42126
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue is related to the powerpc component of the Linux kernel, where the
nmi enter() and nmi exit() functions touch per CPU variables, potentially leading to a kernel crash when invoked during real mode interrupt handling. This can occur if percpu allocation comes from the vmalloc area, particularly when the CONFIG NEED PER CPU PAGE FIRST CHUNK is enabled. The vulnerability can be triggered through early HMI/MCE interrupt handlers called via the DEFINE INTERRUPT HANDLER NMI() wrapper. Technical details include the involvement of rcu nmi enter() and machine check early() functions, with specific register values and interrupt handling mechanisms mentioned.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
RCE
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu