VulnerabilityPublished 8 May 2026Updated 6 Nov 2026

CVE-2026-43351: Linux kernel · KVM: arm64: Eagerly init vgic dist/redist on vgic creation

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in b7493f48c3dba75674a4ee505b4afa8fe5102457 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:04 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in b7493f48c3dba75674a4ee505b4afa8fe5102457, ac6769c8f948dff33265c50e524aebf9aa6f1be0, a24f1d80fbcdbf8b2a7044a00fa12b3972b4c31c

Exploitation evidence

Disclosed: evidence found.
CVE published 8 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Linux kernel to b7493f48c3dba75674a4ee505b4afa8fe5102457, ac6769c8f948dff33265c50e524aebf9aa6f1be0 or a24f1d80fbcdbf8b2a7044a00fa12b3972b4c31c.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ b3aa9283c0c505b5cfd25f7d6cfd720de2adc807, < b7493f48c3dba75674a4ee505b4afa8fe5102457	Fixed in b7493f48c3dba75674a4ee505b4afa8fe5102457
LinuxLinux	Affected ≥ b3aa9283c0c505b5cfd25f7d6cfd720de2adc807, < ac6769c8f948dff33265c50e524aebf9aa6f1be0	Fixed in ac6769c8f948dff33265c50e524aebf9aa6f1be0
LinuxLinux	Affected ≥ b3aa9283c0c505b5cfd25f7d6cfd720de2adc807, < a24f1d80fbcdbf8b2a7044a00fa12b3972b4c31c	Fixed in a24f1d80fbcdbf8b2a7044a00fa12b3972b4c31c
LinuxLinux	Affected =6.14	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Eagerly init vgic dist/redist on vgic creation If vgic_allocate_private_irqs_locked() fails for any odd reason, we exit kvm_vgic_create() early, leaving dist->rd_regions uninitialised. kvm_vgic_dist_destroy() then comes along and walks into the weeds trying to free the RDs. Got to love this stuff. Solve it by moving all the static initialisation early, and make sure that if we fail halfway, we're in a reasonable shape to perform the rest of the teardown. While at it, reset the vgic model on failure, just in case...

References

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