CVE-2026-80665: Linux kernel · KVM: arm64: nv: Inject SEA if kvm_translate_vncr() can't resolve PFN
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 7.1 High · fixed in 7.0.0-1013.13~24.04.1 : patch Linux kernel soon.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 7.0.0-1013.13~24.04.1, 7.0.0-1017.17~24.04.1, 7.0.0-1016.16~24.04.1 +12
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 28 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A patch is available and should be applied by updating to the fixed Linux kernel versions provided by the vendor. The Ubuntu advisory USN-8816-1 confirms that this issue is fixed in the linux-hwe-edge kernel updates. After applying the update, a system reboot is required. Due to ABI changes, third-party kernel modules must be recompiled and reinstalled. Follow the vendor's update instructions carefully to ensure complete remediation.
Description
A vulnerability in the Linux kernel's KVM subsystem for arm64 architecture was resolved. The issue involves improper handling of page frame number (PFN) translation failures in kvm_translate_vncr(), which could lead to incorrect assumptions about abort conditions in kvm_handle_vncr_abort(). This flaw was fixed by preparing an external abort before returning from kvm_translate_vncr() and removing a BUG_ON() in the fault injection path. The vulnerability affects multiple specific Linux kernel versions and has a high severity rating with a CVSS score of 7.1. A patch is available and included in recent Linux kernel updates.
References
- nvd.nist.gov/vuln/detail/CVE-2026-80665 (opens in a new tab)
- git.kernel.org/stable/c/4ead4def04659739c399bfcb063f8a906194c79f (opens in a new tab)
- git.kernel.org/stable/c/53804b6839573c9c6fff5f4cf075d6746267345e (opens in a new tab)
- git.kernel.org/stable/c/9f3e83345a56280efffe235c65593c7e544c0fcc (opens in a new tab)
- ubuntu.com/security/CVE-2026-80665 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-80665 (opens in a new tab)
- git.kernel.org/linus/9f3e83345a56280efffe235c65593c7e544c0fcc (opens in a new tab)
- ubuntu.com/security/notices/USN-8816-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8816-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8816-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-8816-4 (opens in a new tab)
- ubuntu.com/security/notices/USN-8888-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8888-2 (opens in a new tab)