PT-2024-36863 · Linux+2 · Linux Kernel+2
Published
2024-07-27
·
Updated
2025-04-01
·
CVE-2024-56559
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 versions prior to 6.10.0-rc5
Description
A soft lockup issue has been identified in the Linux kernel when compiling kernel source with an up-and-running KASAN-enabled kernel on a 256-core machine. The issue occurs due to excessive time spent iterating vmap nodes and flushing TLB when purging vm area structures, resulting in a soft lockup. The
drain vmap area work() function spends over 23 seconds, and there are 2805 flush tlb kernel range() calls in the ftrace log. Each flush tlb kernel range() call runs for approximately 7.5ms, leading to a total of 21.03 seconds and triggering a soft lockup.Recommendations
To resolve the issue, consider extending the soft lockup time as a temporary workaround. For example, running the command
# echo can help alleviate the issue. However, a more permanent solution would be to update to a newer version of the Linux kernel that includes the fix for this issue. At the moment, there is no information about a newer version that contains a fix for this vulnerability.Exploit
Improper Locking
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Weakness Enumeration
Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Ubuntu