CVE-2026-72284
KVM: x86: Ignore pending PV EOI if the vCPU has since disabled PV EOIs
Description
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 ]---
INFO
Published Date :
Aug. 15, 2026, 6:21 a.m.
Last Modified :
Aug. 17, 2026, 6:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel.
- Ignore PV EOI requests if vCPU disabled them.
- Ensure PV EOI state is checked correctly.
- Apply kernel patches for KVM.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-72284.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72284 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-72284
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-72284 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72284 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'ae7a2a3fb6f8b784c2752863f4f1f20c656f76fb', 'lessThan': '038b9ce6fafda1babd1e33d52cbc6039747a6d87', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae7a2a3fb6f8b784c2752863f4f1f20c656f76fb', 'lessThan': '8e9f7a95279bf608cf4c331ed89612e28c04564f', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae7a2a3fb6f8b784c2752863f4f1f20c656f76fb', 'lessThan': 'ebd7845ca0471d251a1cb48d84eb165aff5b7123', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae7a2a3fb6f8b784c2752863f4f1f20c656f76fb', 'lessThan': '97542f15dc4cf6cd3fdc035e482dca54246ddf48', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae7a2a3fb6f8b784c2752863f4f1f20c656f76fb', 'lessThan': '32bdca80aa81c2cb906f50a88b220ce1ecdc5e6e', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae7a2a3fb6f8b784c2752863f4f1f20c656f76fb', 'lessThan': '9285e4070df2c40585c3d7ec9571faa7a2b97e17', 'versionType': 'git'}], 'programFiles': ['arch/x86/kvm/lapic.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.6'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.6', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['arch/x86/kvm/lapic.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'ae7a2a3fb6f8b784c2752863f4f1f20c656f76fb', 'lessThan': '038b9ce6fafda1babd1e33d52cbc6039747a6d87', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae7a2a3fb6f8b784c2752863f4f1f20c656f76fb', 'lessThan': '8e9f7a95279bf608cf4c331ed89612e28c04564f', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae7a2a3fb6f8b784c2752863f4f1f20c656f76fb', 'lessThan': 'ebd7845ca0471d251a1cb48d84eb165aff5b7123', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae7a2a3fb6f8b784c2752863f4f1f20c656f76fb', 'lessThan': '97542f15dc4cf6cd3fdc035e482dca54246ddf48', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae7a2a3fb6f8b784c2752863f4f1f20c656f76fb', 'lessThan': '32bdca80aa81c2cb906f50a88b220ce1ecdc5e6e', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae7a2a3fb6f8b784c2752863f4f1f20c656f76fb', 'lessThan': '9285e4070df2c40585c3d7ec9571faa7a2b97e17', 'versionType': 'git'}], 'programFiles': ['arch/x86/kvm/lapic.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.6'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.6', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['arch/x86/kvm/lapic.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'ae7a2a3fb6f8b784c2752863f4f1f20c656f76fb', 'lessThan': '038b9ce6fafda1babd1e33d52cbc6039747a6d87', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae7a2a3fb6f8b784c2752863f4f1f20c656f76fb', 'lessThan': '8e9f7a95279bf608cf4c331ed89612e28c04564f', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae7a2a3fb6f8b784c2752863f4f1f20c656f76fb', 'lessThan': 'ebd7845ca0471d251a1cb48d84eb165aff5b7123', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae7a2a3fb6f8b784c2752863f4f1f20c656f76fb', 'lessThan': '97542f15dc4cf6cd3fdc035e482dca54246ddf48', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae7a2a3fb6f8b784c2752863f4f1f20c656f76fb', 'lessThan': '32bdca80aa81c2cb906f50a88b220ce1ecdc5e6e', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae7a2a3fb6f8b784c2752863f4f1f20c656f76fb', 'lessThan': '9285e4070df2c40585c3d7ec9571faa7a2b97e17', 'versionType': 'git'}], 'programFiles': ['arch/x86/kvm/lapic.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.6'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.6', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['arch/x86/kvm/lapic.c'], 'defaultStatus': 'affected'}] Added Description 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 ]--- Added Reference https://git.kernel.org/stable/c/038b9ce6fafda1babd1e33d52cbc6039747a6d87 Added Reference https://git.kernel.org/stable/c/32bdca80aa81c2cb906f50a88b220ce1ecdc5e6e Added Reference https://git.kernel.org/stable/c/8e9f7a95279bf608cf4c331ed89612e28c04564f Added Reference https://git.kernel.org/stable/c/9285e4070df2c40585c3d7ec9571faa7a2b97e17 Added Reference https://git.kernel.org/stable/c/97542f15dc4cf6cd3fdc035e482dca54246ddf48 Added Reference https://git.kernel.org/stable/c/ebd7845ca0471d251a1cb48d84eb165aff5b7123