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NVD / CVE Program· CNA Linux

CVE-2026-46316: KVM: arm64: vgic-its: Drop the translation cache reference only for the erased entry

Noroxi assessment

Priority: Monitor (action score 37/100)

  • Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.33% (FIRST EPSS).
  • Someone with local access to the system can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 13031fb6b8357fbbcded2a7f4cba73e4781ee594, 2bbc395e81bd29c543a0529a678327e932a7ec69, 9121f4605ab94969f62d1b5714ca3c6c69bd202f.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 13031fb6b8357fbbcded2a7f4cba73e4781ee594, 2bbc395e81bd29c543a0529a678327e932a7ec69, 9121f4605ab94969f62d1b5714ca3c6c69bd202f or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-its: Drop the translation cache reference only for the erased entry vgic_its_invalidate_cache() walks the per-ITS translation cache with xa_for_each() and drops the cache's reference on each entry with vgic_put_irq(). It puts the iterated pointer, though, rather than the value returned by xa_erase(). The function is called from contexts that do not exclude one another: the ITS command handlers hold its_lock, the GITS_CTLR write path holds cmd_lock, and the path that clears EnableLPIs in a redistributor's GICR_CTLR holds neither. Two or more of them can drain the same cache concurrently, and if each one observes the same entry, erases it and then puts it, the single reference the cache holds on that entry is dropped more than once. The entry can then be freed while an ITE still maps it. xa_erase() is atomic and returns the previous entry, so put only the entry that this context actually removed. The cache reference is then dropped exactly once per entry even when the invalidations run concurrently, and the behavior is unchanged when only one context runs.

CriticalCVSS 9.3 · v3.1—Proof of concept Fix available
Published
Jun 9, 2026
Updated
Oct 19, 2026
EPSS
0.3% · 27th percentile

Report tools

JSON

Action score

37

Monitor

Low priority for now.

CVSS
37 / 40 · 9.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
9.3
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel6.10 and later · before 6.12.93
  • linux linux kernel6.13 and later · before 6.18.35
  • linux linux kernel6.19 and later · before 7.0.12
  • linux linux kernel7.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 6.10affected
    • 8201d1028caa4fae88e222c4e8cf541fdf45b821 and later · before b7b72e88046328c9fdc638fe887d4240257dd5dcaffected · git
    • 8201d1028caa4fae88e222c4e8cf541fdf45b821 and later · before 2bbc395e81bd29c543a0529a678327e932a7ec69affected · git
    • 8201d1028caa4fae88e222c4e8cf541fdf45b821 and later · before 9121f4605ab94969f62d1b5714ca3c6c69bd202faffected · git
    • 8201d1028caa4fae88e222c4e8cf541fdf45b821 and later · before 13031fb6b8357fbbcded2a7f4cba73e4781ee594affected · git
    • before 6.10not affected · semver
    • 6.12.93 and later · up to and including 6.12.*not affected · semver
    • 6.18.35 and later · up to and including 6.18.*not affected · semver
    • 7.0.12 and later · up to and including 7.0.*not affected · semver
    • 7.1 and laternot affected · original_commit_for_fix

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:10kernelbefore 6.12.0-211.28.1.el10_26.12.0-211.28.1.el10_2
AlmaLinux:10kernelbefore 6.12.0-211.30.1.el10_26.12.0-211.30.1.el10_2
AlmaLinux:10kernel-64kbefore 6.12.0-211.30.1.el10_26.12.0-211.30.1.el10_2
AlmaLinux:10kernel-64kbefore 6.12.0-211.28.1.el10_26.12.0-211.28.1.el10_2
AlmaLinux:10kernel-64k-corebefore 6.12.0-211.28.1.el10_26.12.0-211.28.1.el10_2
AlmaLinux:10kernel-64k-corebefore 6.12.0-211.30.1.el10_26.12.0-211.30.1.el10_2
AlmaLinux:10kernel-64k-debugbefore 6.12.0-211.30.1.el10_26.12.0-211.30.1.el10_2
AlmaLinux:10kernel-64k-debugbefore 6.12.0-211.28.1.el10_26.12.0-211.28.1.el10_2
AlmaLinux:10kernel-64k-debug-corebefore 6.12.0-211.30.1.el10_26.12.0-211.30.1.el10_2
AlmaLinux:10kernel-64k-debug-corebefore 6.12.0-211.28.1.el10_26.12.0-211.28.1.el10_2
AlmaLinux:10kernel-64k-debug-develbefore 6.12.0-211.28.1.el10_26.12.0-211.28.1.el10_2
AlmaLinux:10kernel-64k-debug-develbefore 6.12.0-211.30.1.el10_26.12.0-211.30.1.el10_2
AlmaLinux:10kernel-64k-debug-devel-matchedbefore 6.12.0-211.28.1.el10_26.12.0-211.28.1.el10_2
AlmaLinux:10kernel-64k-debug-devel-matchedbefore 6.12.0-211.30.1.el10_26.12.0-211.30.1.el10_2
AlmaLinux:10kernel-64k-debug-modulesbefore 6.12.0-211.30.1.el10_26.12.0-211.30.1.el10_2
AlmaLinux:10kernel-64k-debug-modulesbefore 6.12.0-211.28.1.el10_26.12.0-211.28.1.el10_2
AlmaLinux:10kernel-64k-debug-modules-corebefore 6.12.0-211.28.1.el10_26.12.0-211.28.1.el10_2
AlmaLinux:10kernel-64k-debug-modules-corebefore 6.12.0-211.30.1.el10_26.12.0-211.30.1.el10_2
AlmaLinux:10kernel-64k-debug-modules-extrabefore 6.12.0-211.28.1.el10_26.12.0-211.28.1.el10_2
AlmaLinux:10kernel-64k-debug-modules-extrabefore 6.12.0-211.30.1.el10_26.12.0-211.30.1.el10_2
AlmaLinux:10kernel-64k-develbefore 6.12.0-211.30.1.el10_26.12.0-211.30.1.el10_2
AlmaLinux:10kernel-64k-develbefore 6.12.0-211.28.1.el10_26.12.0-211.28.1.el10_2
AlmaLinux:10kernel-64k-devel-matchedbefore 6.12.0-211.28.1.el10_26.12.0-211.28.1.el10_2
AlmaLinux:10kernel-64k-devel-matchedbefore 6.12.0-211.30.1.el10_26.12.0-211.30.1.el10_2

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2026-52906Jun 9, 2026 · 9p: fix access mode flags being ORed instead of replaced
    30Monitor
  • ← EarlierCVE-2026-52907Jun 9, 2026 · media: rockchip: rkcif: fix off by one bugs
    31Monitor
  • Later →CVE-2026-46317Jun 9, 2026 · KVM: arm64: Reassign nested_mmus array behind mmu_lock
    35Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux13031fb6b8357fbbcded2a7f4cba73e4781ee594Vendor (CNA)
Linux Linux2bbc395e81bd29c543a0529a678327e932a7ec69Vendor (CNA)
Linux Linux9121f4605ab94969f62d1b5714ca3c6c69bd202fVendor (CNA)
Linux Linuxb7b72e88046328c9fdc638fe887d4240257dd5dcVendor (CNA)
almalinux:kernel6.12.0-211.28.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k6.12.0-211.28.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k-core6.12.0-211.28.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k-debug6.12.0-211.28.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k-debug-core6.12.0-211.28.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k-debug-devel6.12.0-211.28.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched6.12.0-211.28.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k-debug-modules6.12.0-211.28.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k-debug-modules-core6.12.0-211.28.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra6.12.0-211.28.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k-devel6.12.0-211.28.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k-devel-matched6.12.0-211.28.1.el10_2 · AlmaLinux:10Package registry (OSV)
debian:linux6.12.94-1 · Debian:13Package registry (OSV)
red hat:kernel-64k-debug-debuginfo0:6.12.0-211.30.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-64k-debug-devel0:6.12.0-211.30.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-64k-debug-devel-matched0:6.12.0-211.30.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-64k-debuginfo0:6.12.0-211.30.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-64k-devel0:6.12.0-211.30.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-64k-devel-matched0:6.12.0-211.30.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-debug-debuginfo0:6.12.0-211.30.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-debug-devel0:6.12.0-211.30.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-debug-devel-matched0:6.12.0-211.30.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-debuginfo0:6.12.0-211.30.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-debuginfo-common-aarch640:6.12.0-211.30.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-debuginfo-common-ppc64le0:6.12.0-211.30.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
rocky linux:kernel0:5.14.0-687.22.1.el9_8 · Rocky Linux:9Package registry (OSV)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHubstars:02026-07-08

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoC+28 d
  3. TodayOct 31, 2026+144 d

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Changed
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. SSVC exploitation— → none
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (14 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records