In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Ignore pending PV EOI if the vCPU has since disabled PV EO…
CVE-2026-72284 · published 15 Aug 2026
How serious is it
- Severity: high, CVSS score 7.1 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-72284?
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Who is affected
- Linux Linux: 3.6
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
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- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
In the Linux kernel, the following vulnerability has been resolved:
KVM: x86: Ignore pending PV EOI if the vCPU has since disabled PV EOIs
Ignore KVM's internal "service pending PV EOI" request if the vCPU has
disabled PV EOIs since the request was made. Asserting that PV EOIs are
enabled can fail if reading guest memory in pv_eoi_get_user() fails, i.e.
if pv_eoi_test_and_clr_pending() bails early, *and* the vCPU also disables
PV EOIs.
kernel BUG at arch/x86/kvm/lapic.c:3338!
Oops: invalid opcode: 0000 [#1] SMP
CPU: 4 UID: 1000 PID: 890 Comm: pv_eoi_test Not tainted 7.0.0-d585aa5894d8-vm #337 PREEMPT
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015
RIP: 0010:kvm_lapic_sync_from_vapic+0x12b/0x140 [kvm]
Call Trace:
<TASK>
kvm_arch_vcpu_ioctl_run+0x1075/0x1c30 [kvm]
kvm_vcpu_ioctl+0x2d5/0x980 [kvm]
__x64_sys_ioctl+0x8a/0xd0
do_syscall_64+0xb5/0xb40
entry_SYSCALL_64_after_hwframe+0x4b/0x53
</TASK>
Modules linked in: kvm_intel kvm irqbypass
---[ end trace 0000000000000000 ]---
Check your whole app
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References
- git.kernel.org/stable/c/038b9ce6fafda1babd1e33d52cbc6039747a6d87
- git.kernel.org/stable/c/32bdca80aa81c2cb906f50a88b220ce1ecdc5e6e
- git.kernel.org/stable/c/8e9f7a95279bf608cf4c331ed89612e28c04564f
- git.kernel.org/stable/c/9285e4070df2c40585c3d7ec9571faa7a2b97e17
- git.kernel.org/stable/c/97542f15dc4cf6cd3fdc035e482dca54246ddf48
- git.kernel.org/stable/c/ebd7845ca0471d251a1cb48d84eb165aff5b7123
Merged from NVD. Last updated 23 Oct 2026. All vulnerabilities · RSS · JSON