Use After Free Affecting kernel-tools-libs package, versions *
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Test your applications- Snyk ID SNYK-RHEL8-KERNELTOOLSLIBS-8043329
- published 18 Sep 2024
- disclosed 18 Sep 2024
Introduced: 18 Sep 2024
CVE-2024-46762 Open this link in a new tabHow to fix?
There is no fixed version for RHEL:8 kernel-tools-libs.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-tools-libs package and not the kernel-tools-libs package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
xen: privcmd: Fix possible access to a freed kirqfd instance
Nothing prevents simultaneous ioctl calls to privcmd_irqfd_assign() and privcmd_irqfd_deassign(). If that happens, it is possible that a kirqfd created and added to the irqfds_list by privcmd_irqfd_assign() may get removed by another thread executing privcmd_irqfd_deassign(), while the former is still using it after dropping the locks.
This can lead to a situation where an already freed kirqfd instance may be accessed and cause kernel oops.
Use SRCU locking to prevent the same, as is done for the KVM implementation for irqfds.