Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic: Handle race between interrupt affinity change and LPI disabling Hyunwoo Kim reports some really bad races should the following situation occur: - LPI-I is pending in vcpu-B's AP list - vcpu-A writes to vcpu-B's RD to disable its LPIs - vcpu-C moves I from B to C If the last two race nicely enough, vgic_prune_ap_list() can drop the irq and AP list locks, reacquire them, and in the interval the irq has been freed. UAF follows. The fix is two-fold: - Before dropping the irq and ap_list locks, take a reference on the irq - Do not try to handle migration of the pending bit: there is no expectation that this state is retained, as per the architecture With that, we're sure that the interrupt is still around, and we safely remove it from the AP list as it has no target at this stage (unless another interrupt fires, but that's another story).
CVSS Score
CRITICAL
References
- https://git.kernel.org/stable/c/7258770e5814f15e8308ebda82ac9acf6964ba8e
- https://git.kernel.org/stable/c/b1a89d12d35a8256d2b170ced0b1c86851f3def2
- https://git.kernel.org/stable/c/d19dca8194ebed371e624331c6be2cb73b562caf
FAQ
What is CVE-2026-72288?
CVE-2026-72288 is a vulnerability with a CVSS score of 9.3 (CRITICAL). In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic: Handle race between interrupt affinity change and LPI disabling Hyunwoo Kim reports some really bad races should...
How severe is CVE-2026-72288?
CVE-2026-72288 has been rated CRITICAL with a CVSS base score of 9.3/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-72288?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.