CVE-2024-42240 — Infinite Loop in Linux
Severity
5.5MEDIUMNVD
OSV7.8OSV4.7
EPSS
0.0%
top 99.58%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedAug 7
Latest updateJan 14
Description
In the Linux kernel, the following vulnerability has been resolved:
x86/bhi: Avoid warning in #DB handler due to BHI mitigation
When BHI mitigation is enabled, if SYSENTER is invoked with the TF flag set
then entry_SYSENTER_compat() uses CLEAR_BRANCH_HISTORY and calls the
clear_bhb_loop() before the TF flag is cleared. This causes the #DB handler
(exc_debug_kernel()) to issue a warning because single-step is used outside the
entry_SYSENTER_compat() function.
To address this issue, entry_SYSEN…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6