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TI-2026-50567 Aliases CVE-2026-72288GHSA-9726-h75p-mc3x

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

Priority MEDIUM 41Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 9 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

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).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00185 8th percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.1.191, 6.6.160, 6.12.114 +3Red Hat: 3 advisoriesRed Hat: 9 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux4.8 and later6.1.191, 6.6.160, 6.12.114, 6.18.40, 7.1.5, 7.2Patch availableCNA
  • Linux VendorLinux Affected 4.8 and later Fixed in 6.1.191, 6.6.160, 6.12.114, 6.18.40, 7.1.5, 7.2 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*——Linux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions — — ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 6.1.191, 6.6.160, 6.12.114, 6.18.40, 7.1.5, 7.2

Red Hat 3 advisories

  • RHSA-2026:92209 Released 2026-10-29 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.180.1.el8_10, kernel-4.18.0-553.180.1.el8_10, kernel-abi-stablelists-4.18.0-553.180.1.el8_10 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.180.1.el8_10
  • RHSA-2026:92208 Released 2026-10-29 · Red Hat rating Important
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux NFV (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-debug-4.18.0-553.180.1.rt7.521.el8_10 +9
    • 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-debug-4.18.0-553.180.1.rt7.521.el8_10 +7
  • RHSA-2026:83156 Released 2026-10-14 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-687.58.1.el9_8, kernel-64k-debug-devel-matched-5.14.0-687.58.1.el9_8, kernel-64k-devel-5.14.0-687.58.1.el9_8 +12
    • 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-64k-core-5.14.0-687.58.1.el9_8 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-687.58.1.el9_8, libperf-5.14.0-687.58.1.el9_8
    • 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-64k-core-5.14.0-687.58.1.el9_8 +21
    • 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-debug-5.14.0-687.58.1.el9_8 +9

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:83156
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2026:92209
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2026:83156
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2026:92209
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:83156
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2026:92208
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2026:92208
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2026:83156
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2026:83156
Not affected: 2 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-72288
  2. 2026-10-03 Alias added: GHSA-9726-h75p-mc3x
  3. 2026-10-16 Fix available: RHSA-2026:83156 · Red Hat
  4. 2026-10-16 Fix available: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) +2 · Red Hat
  5. 2026-10-16 CISA SSVC decision points changed
  6. 2026-10-16 Priority changed: LOW → MEDIUM
  7. 2026-10-21 Fix available: Linux/[email protected], Linux/[email protected], Linux/Linux@77c61235d66246dd6a5f55587f0afc273d832775 +1 · CNA
  8. 2026-10-21 2 new references · CNA
  9. 2026-10-30 Fix available: Linux/[email protected], Linux/Linux@7328cff91703ac4e93c200b20cebaa36d2f314ed · CNA
  10. 2026-10-30 1 new reference · CNA
  11. 2026-10-30 Fix available: Red Hat Enterprise Linux BaseOS (v. 8), Red Hat Enterprise Linux CRB (v. 8), Red Hat Enterprise Linux NFV (v. 8) +1 · Red Hat
  12. 2026-11-01 Fix available: RHSA-2026:92208 · Red Hat
  13. 2026-11-01 Fix available: RHSA-2026:92209 · Red Hat

References

Other 6

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2021-02452 Incorrect authorization in Ubuntu linux kernel KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
See all 21741 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences