AZL-49566
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-49566.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-49566
- Upstream
- Published
- 2024-09-18T08:15:04Z
- Modified
- 2026-04-01T05:17:24.396856Z
- 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
- CVE-2024-46762 affecting package kernel 5.15.200.1-1
- 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