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Red Hat: CVE-2024-50192: kernel: irqchip/gic-v4: Don't allow a VMOVP on a dying VPE (Multiple Advisories)

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Red Hat: CVE-2024-50192: kernel: irqchip/gic-v4: Don't allow a VMOVP on a dying VPE (Multiple Advisories)

Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
11/08/2024
Created
02/11/2025
Added
02/10/2025
Modified
02/10/2025

Description

In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v4: Don't allow a VMOVP on a dying VPE Kunkun Jiang reported that there is a small window of opportunity for userspace to force a change of affinity for a VPE while the VPE has already been unmapped, but the corresponding doorbell interrupt still visible in /proc/irq/. Plug the race by checking the value of vmapp_count, which tracks whether the VPE is mapped ot not, and returning an error in this case. This involves making vmapp_count common to both GICv4.1 and its v4.0 ancestor.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

References

  • CVE-2024-50192
  • RHSA-2024:10943
  • RHSA-2024:10944
  • RHSA-2024:11486
  • 查看数 693
  • 已创建
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