PT-2026-46013 · Llvm+2 · Llvm+2
CVE-2026-46250
·
Published
2026-06-03
·
Updated
2026-07-31
CVSS v3.1
7.3
High
| Vector | AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
On MIPS architecture, the
current thread info is defined as a global register variable located in $gp and is assigned a new address during kernel relocation. A bug in LLVM causes it to always restore $gp if it is found to be clobbered, even when intentionally modified through a global register variable. This behavior contradicts GCC documentation, which states that a callee-saved register used as a global register variable should not be restored if clobbered. Consequently, $gp continues to point to the unrelocated kernel after the epilog of the relocate kernel() function, resulting in an early system crash within the init idle() function.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
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Related Identifiers
Affected Products
Llvm
Linuxmint
Linux Kernel