CVE-2026-72280High· 7.1▾ Twilight

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Drop bogus WARN for write to ZCR_EL2 It is entirely possible for a guest to write to the ZCR_EL2 sysreg alias while in a nested context, as it is expec…

▾ Twilight zone — High severity, or a signal on a lesser flaw

Depth score39/ 100 · Low

impact 39.1 · likelihood 0 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

…

Published

Aug 15, 2026

Updated

Oct 16, 2026

CVSS

7.1

Vendor

Red Hat

Product

Red Hat Enterprise Linux 9

CWE

CWE-617

Depth score

39 · Low

EPSS

0.19% · p8

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Scores by source

NVD 7.1 · CNA 7.1 · Vendor 5.5

CISA SSVC

decided 2026-10-16

Exploitation: none
Automatable: no
Technical impact: partial

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Oct 16.

0.2% → 0.2%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

7 events · 74 days

Aug 15, 2026Published
Disclosed via NVD
Oct 16, 2026Record revised
Last analysed / modified upstream
Oct 16, 2026EPSS first tracked
0.2%
Oct 17, 2026CVSS changed
7.1 → 5.5
Oct 17, 2026Severity changed
high → medium
Oct 27, 2026CVSS changed
5.5 → 7.1
Oct 27, 2026Severity changed
medium → high

Red Hat CWE-617 #nvd #csaf #vex #red-hat #cve.org

Affected

enterprise_linux 10
enterprise_linux 9

Full technical detail▾

Overview

In the Linux kernel, the following vulnerability has been resolved:

KVM: arm64: nv: Drop bogus WARN for write to ZCR_EL2

It is entirely possible for a guest to write to the ZCR_EL2 sysreg alias while in a nested context, as it is expected if FEAT_NV2 is advertised to the L1 hypervisor.

Get rid of the bogus WARN which, since the hyp vectors were installed at this point, has the effect of a hyp_panic...

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

Vendor advisories

Red Hat VEX · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · updated 2026-10-16 · vex

References

Change history

Field changes observed since this record was first indexed.

Oct 27, 2026CVSS 5.5 → 7.1
Oct 27, 2026Severity medium → high
Oct 17, 2026CVSS 7.1 → 5.5
Oct 17, 2026Severity high → medium

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#csaf#vex#red-hat#cve.org

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CVE-2026-72280High· 7.1▾ Twilight

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Drop bogus WARN for write to ZCR_EL2 It is entirely possible for a guest to write to the ZCR_EL2 sysreg alias while in a nested context, as it is expec…

▾ Twilight zone — High severity, or a signal on a lesser flaw

Depth score39/ 100 · Low

impact 39.1 · likelihood 0 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

…

Published

Aug 15, 2026

Updated

Oct 16, 2026

CVSS

7.1

Vendor

Red Hat

Product

Red Hat Enterprise Linux 9

CWE

CWE-617

Depth score

39 · Low

EPSS

0.19% · p8

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Scores by source

NVD 7.1 · CNA 7.1 · Vendor 5.5

CISA SSVC

decided 2026-10-16

Exploitation: none
Automatable: no
Technical impact: partial

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Oct 16.

0.2% → 0.2%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

7 events · 74 days

Aug 15, 2026Published
Disclosed via NVD
Oct 16, 2026Record revised
Last analysed / modified upstream
Oct 16, 2026EPSS first tracked
0.2%
Oct 17, 2026CVSS changed
7.1 → 5.5
Oct 17, 2026Severity changed
high → medium
Oct 27, 2026CVSS changed
5.5 → 7.1
Oct 27, 2026Severity changed
medium → high

Red Hat CWE-617 #nvd #csaf #vex #red-hat #cve.org

Affected

enterprise_linux 10
enterprise_linux 9

Full technical detail▾

Overview

In the Linux kernel, the following vulnerability has been resolved:

KVM: arm64: nv: Drop bogus WARN for write to ZCR_EL2

It is entirely possible for a guest to write to the ZCR_EL2 sysreg alias while in a nested context, as it is expected if FEAT_NV2 is advertised to the L1 hypervisor.

Get rid of the bogus WARN which, since the hyp vectors were installed at this point, has the effect of a hyp_panic...

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

Vendor advisories

Red Hat VEX · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · updated 2026-10-16 · vex

References

Change history

Field changes observed since this record was first indexed.

Oct 27, 2026CVSS 5.5 → 7.1
Oct 27, 2026Severity medium → high
Oct 17, 2026CVSS 7.1 → 5.5
Oct 17, 2026Severity high → medium

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#csaf#vex#red-hat#cve.org