CVE-2026-45968None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: cpuidle: Skip governor when only one idle state is available On certain platforms (PowerNV systems without a power-mgt DT node), cpuidle may register only a single idl…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 6.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
In the Linux kernel, the following vulnerability has been resolved:
cpuidle: Skip governor when only one idle state is available
On certain platforms (PowerNV systems without a power-mgt DT node), cpuidle may register only a single idle state. In cases where that single state is a polling state (state 0), the ladder governor may incorrectly treat state 1 as the first usable state and pass an out-of-bounds index. This can lead to a NULL enter callback being invoked, ultimately resulting in a system crash.
[ 13.342636] cpuidle-powernv : Only Snooze is available [ 13.351854] Faulting instruction address: 0x00000000 [ 13.376489] NIP [0000000000000000] 0x0 [ 13.378351] LR [c000000001e01974] cpuidle_enter_state+0x2c4/0x668
Fix this by adding a bail-out in cpuidle_select() that returns state 0 directly when state_count <= 1, bypassing the governor and keeping the tick running.
Linux >= dc2251bf98c66db3f4e055b751968f0871037ae4 < a0f7e804edc82e513d1ccb7c95ed8b351522ec81Linux >= dc2251bf98c66db3f4e055b751968f0871037ae4 < 5d103a38e2ae96eca57fd17161bcd29bd4622d1cLinux >= dc2251bf98c66db3f4e055b751968f0871037ae4 < 4da2b897283c39980d6ae09dc1560fcd937879e5Linux >= dc2251bf98c66db3f4e055b751968f0871037ae4 < 5c577ac939bca486cb02069505cfe47a5312ce02Linux >= dc2251bf98c66db3f4e055b751968f0871037ae4 < 8f6833d919bae915ead6c599a53e81e19b32da52Linux >= dc2251bf98c66db3f4e055b751968f0871037ae4 < 63ae78336f40bcd9a44952a7c6bafb9c88a8effdLinux >= dc2251bf98c66db3f4e055b751968f0871037ae4 < a0724e40a58a0e323c59707edeae5b71d15800dcLinux >= dc2251bf98c66db3f4e055b751968f0871037ae4 < e5c9ffc6ae1bcdb1062527d611043681ac301acaLinux 4.14Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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