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Fencer Vulns
critical 9.3

CVE-2026-72288 in the critical feed json

KVM: arm64: vgic: Handle race between interrupt affinity change and LPI disabling

published 2026-08-15 2 mo ago modified 2026-10-30 10 d ago also EUVD-2026-59187

cvss
9.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 8%
public exploits
0
none known

Summary

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).

Patch / fix

  • Linux Linux 6.1.191, 6.6.160, 6.12.114, 6.18.40, 7.1.5, 7.2
  • linux Debian 13 6.12.115-2
  • linux Debian 14 7.1.5-1

debian advisories DEBIAN-CVE-2026-72288

  • linux Ubuntu 26.04 LTS 7.0.0-34.34
  • linux-aws Ubuntu 26.04 LTS 7.0.0-1013.13
  • linux-gcp Ubuntu 26.04 LTS 7.0.0-1013.13
  • linux-gke Ubuntu 26.04 LTS 7.0.0-1007.8
  • linux-ibm Ubuntu 26.04 LTS 7.0.0-1014.14
  • linux-azure Ubuntu 26.04 LTS 7.0.0-1017.17
  • linux-raspi Ubuntu 26.04 LTS 7.0.0-1020.20
  • linux-riscv Ubuntu 26.04 LTS 7.0.0-34.34.1

ubuntu advisories UBUNTU-CVE-2026-72288

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel RHEL 9 5.14.0-687.58.1.el9_8
  • rv RHEL 9 5.14.0-687.58.1.el9_8
  • perf RHEL 9 5.14.0-687.58.1.el9_8
  • rtla RHEL 9 5.14.0-687.58.1.el9_8
  • libperf RHEL 9 5.14.0-687.58.1.el9_8
  • kernel-rt RHEL 9 5.14.0-687.58.1.el9_8
  • kernel-64k RHEL 9 5.14.0-687.58.1.el9_8
  • kernel-core RHEL 9 5.14.0-687.58.1.el9_8

red hat advisories RHSA-2026:83156

  • kernel-64kb SLES 15 SP5-LTSS, SLE High Performance Computing 15 SP5-LTSS, SLE High Performance Computing 15 SP5-ESPOS 5.14.21-150500.55.189.1
  • kernel-syms SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE High Performance Computing 15 SP5-LTSS +1 more 5.14.21-150500.55.189.1
  • kernel-source SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE Micro 5.5 +2 more 5.14.21-150500.55.189.1
  • kernel-default SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE Micro 5.5 +3 more 5.14.21-150500.55.189.1
  • kernel-obs-build SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE High Performance Computing 15 SP5-LTSS +1 more 5.14.21-150500.55.189.1
  • kernel-default-base SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE Micro 5.5 +2 more 5.14.21-150500.55.189.1.150500.6.87.4
  • kernel-64kb SLE Module for Basesystem 15 SP7 6.4.0-150700.53.81.1
  • kernel-syms SLE Module for Development Tools 15 SP7 6.4.0-150700.53.81.1

suse advisories SUSE-SU-2026:4595-1SUSE-SU-2026:4254-1SUSE-SU-2026:4369-1SUSE-SU-2026:4347-1SUSE-SU-2026:4284-1SUSE-SU-2026:23887-1

  • kernel-rt openSUSE Leap 16.0 6.12.0-160000.38.1
  • dtb-aarch64 openSUSE Leap 16.0 6.12.0-160000.38.1
  • kernel-64kb openSUSE Leap 16.0 6.12.0-160000.38.1
  • kernel-syms openSUSE Leap 16.0 6.12.0-160000.38.1
  • kernel-azure openSUSE Leap 16.0 6.12.0-160000.38.1
  • kernel-obs-qa openSUSE Leap 16.0 6.12.0-160000.38.1
  • kernel-source openSUSE Leap 16.0 6.12.0-160000.38.1
  • kernel-default openSUSE Leap 16.0 6.12.0-160000.38.1

opensuse advisories openSUSE-SU-2026:21910-1

  • kernel-rt AlmaLinux 8 4.18.0-553.180.1.rt7.521.el8_10
  • kernel-rt-core AlmaLinux 8 4.18.0-553.180.1.rt7.521.el8_10
  • kernel-rt-modules AlmaLinux 8 4.18.0-553.180.1.rt7.521.el8_10
  • kernel-rt-debug-core AlmaLinux 8 4.18.0-553.180.1.rt7.521.el8_10
  • kernel-rt-debug-modules AlmaLinux 8 4.18.0-553.180.1.rt7.521.el8_10
  • kernel-rt-modules-extra AlmaLinux 8 4.18.0-553.180.1.rt7.521.el8_10
  • kernel-rt-debug-modules-extra AlmaLinux 8 4.18.0-553.180.1.rt7.521.el8_10
  • kernel AlmaLinux 8 4.18.0-553.180.1.el8_10

almalinux advisories ALSA-2026:92208ALSA-2026:92209ALSA-2026:83156

  • kernel Rocky Linux 8 4.18.0-553.180.1.el8_10.cloud.0.1
  • kernel-rt Rocky Linux 8 4.18.0-553.180.1.rt7.521.el8_10
  • kernel Rocky Linux 8 4.18.0-553.180.1.el8_10
  • kernel Rocky Linux 9 5.14.0-687.58.1.el9_8

rocky linux advisories RXSA-2026:92209RLSA-2026:92208RLSA-2026:92209RLSA-2026:83156

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-72288 updated cvss 7.0

kernel: KVM: arm64: vgic: Handle race between interrupt affinity change and LPI disabling

  • Red Hat Enterprise Linux 9 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +12 more Red Hat Enterprise Linux 10 kernel
    affected: no fix available
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-687.58.1.el9_8, perf 5.14.0-687.58.1.el9_8, rtla 5.14.0-687.58.1.el9_8, python3-perf 5.14.0-687.58.1.el9_8, kernel-devel-matched 5.14.0-687.58.1.el9_8, kernel-64k-devel-matched 5.14.0-687.58.1.el9_8, +7 more
    fixed: vendor fix RHSA-2026:83156
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.180.1.el8_10, kernel 4.18.0-553.180.1.el8_10, bpftool 4.18.0-553.180.1.el8_10, kernel-core 4.18.0-553.180.1.el8_10, kernel-tools 4.18.0-553.180.1.el8_10, python3-perf 4.18.0-553.180.1.el8_10, +15 more
    fixed: vendor fix RHSA-2026:92209
  • Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-687.58.1.el9_8, kernel-64k 5.14.0-687.58.1.el9_8, kernel-core 5.14.0-687.58.1.el9_8, kernel-tools 5.14.0-687.58.1.el9_8, kernel-modules 5.14.0-687.58.1.el9_8, kernel-64k-core 5.14.0-687.58.1.el9_8, +27 more Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libperf 5.14.0-687.58.1.el9_8, kernel-debuginfo-common-s390x 5.14.0-687.58.1.el9_8, kernel-debuginfo-common-x86_64 5.14.0-687.58.1.el9_8, kernel-debuginfo-common-aarch64 5.14.0-687.58.1.el9_8, kernel-debuginfo-common-ppc64le 5.14.0-687.58.1.el9_8
    fixed: vendor fix RHSA-2026:83156
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.180.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.180.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.180.1.el8_10
    fixed: vendor fix RHSA-2026:92209
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.180.1.rt7.521.el8_10, kernel-rt-kvm 4.18.0-553.180.1.rt7.521.el8_10, kernel-rt-core 4.18.0-553.180.1.rt7.521.el8_10, kernel-rt-modules 4.18.0-553.180.1.rt7.521.el8_10, kernel-rt-debug-kvm 4.18.0-553.180.1.rt7.521.el8_10, kernel-rt-debug-core 4.18.0-553.180.1.rt7.521.el8_10, +4 more
    fixed: vendor fix RHSA-2026:92208
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-687.58.1.el9_8, kernel-rt-64k 5.14.0-687.58.1.el9_8, kernel-rt-core 5.14.0-687.58.1.el9_8, kernel-rt-modules 5.14.0-687.58.1.el9_8, kernel-rt-64k-core 5.14.0-687.58.1.el9_8, kernel-rt-debug-core 5.14.0-687.58.1.el9_8, +14 more Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-687.58.1.el9_8, kernel-rt-core 5.14.0-687.58.1.el9_8, kernel-rt-modules 5.14.0-687.58.1.el9_8, kernel-rt-debug-core 5.14.0-687.58.1.el9_8, kernel-rt-modules-core 5.14.0-687.58.1.el9_8, kernel-rt-debug-modules 5.14.0-687.58.1.el9_8, +4 more
    fixed: vendor fix RHSA-2026:83156
  • Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-553.180.1.rt7.521.el8_10, kernel-rt-core 4.18.0-553.180.1.rt7.521.el8_10, kernel-rt-modules 4.18.0-553.180.1.rt7.521.el8_10, kernel-rt-debug-core 4.18.0-553.180.1.rt7.521.el8_10, kernel-rt-debug-modules 4.18.0-553.180.1.rt7.521.el8_10, kernel-rt-modules-extra 4.18.0-553.180.1.rt7.521.el8_10, +2 more
    fixed: vendor fix RHSA-2026:92208
show 1 more
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
23 d ago

Exploit prediction

0.18% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

  • Linux Linux

Classification

Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.