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
- 2024-09-18T07:12:21.854Z
- Modified
- 2025-11-28T02:35:47.262965Z
- Summary
- xen: privcmd: Fix possible access to a freed kirqfd instance
- 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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/46xxx/CVE-2024-46762.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/112fd2f02b308564724b8e81006c254d20945c4b
- https://git.kernel.org/stable/c/611ff1b1ae989a7bcce3e2a8e132ee30e968c557
- https://git.kernel.org/stable/c/e997b357b13a7d95de31681fc54fcc34235fa527
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/46xxx/CVE-2024-46762.json
- https://nvd.nist.gov/vuln/detail/CVE-2024-46762