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Test your applicationsUpgrade RHEL:9
kernel-64k-debug-modules-core
to version 0:5.14.0-284.90.1.el9_2 or higher.
This issue was patched in RHSA-2024:8613
.
Note: Versions mentioned in the description apply only to the upstream kernel-64k-debug-modules-core
package and not the kernel-64k-debug-modules-core
package as distributed by RHEL
.
See How to fix?
for RHEL:9
relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
lock_task_sighand() can trigger a hard lockup. If NR_CPUS threads call do_task_stat() at the same time and the process has NR_THREADS, it will spin with irqs disabled O(NR_CPUS * NR_THREADS) time.
Change do_task_stat() to use sig->stats_lock to gather the statistics outside of ->siglock protected section, in the likely case this code will run lockless.