CVE-2024-46762
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-46762
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-46762.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-46762
- Downstream
- Related
- Published
- 2024-09-18T08:15:04Z
- Modified
- 2025-08-09T20:01:25Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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 privcmdirqfdassign() and privcmdirqfddeassign(). If that happens, it is possible that a kirqfd created and added to the irqfdslist by privcmdirqfdassign() may get removed by another thread executing privcmdirqfd_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.
- References