PT-2024-32246 · Linux+7 · Linux Kernel+7
Li Huafei
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Published
2024-08-19
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Updated
2026-05-26
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CVE-2024-46848
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 caused by the low initial period of the frequency estimation algorithm, which triggers the defects of the hardware, specifically erratum HSW11 and HSW143. The HSW11 requires a period larger than 100 for the INST RETIRED.ALL event, but the initial period in the freq mode is 1. A minimum period of 128 is enforced as well on HSW. HSW143 is regarding that the fixed counter 1 may overcount 32 with the Hyper-Threading is enabled. However, based on the test, the hardware has more issues than it tells. Besides the fixed counter 1, the message 'interrupt took too long' can be observed on any counter which was armed with a period < 32 and two events expired in the same NMI. A minimum period of 32 is enforced for the rest of the events.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Improper Check for Exceptional Conditions
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu