CVE-2026-80652
Overview
CVE-2026-80652 is a known-severity vulnerability. It was published on August 28, 2026.
Technical Description
In the Linux kernel, the following vulnerability has been resolved:
crypto: ccp - Treat zero-length cert chain as query for blob lengths
When handling a PDH export, treat a zero-length userspace cert chain buffer
as a request to query the length of the relevant blobs. Failure to account
for the zero-length buffer trips a BUG_ON() when running with
CONFIG_DEBUG_VIRTUAL=y due to trying to get the physical address of the
ZERO_SIZE_PTR (returned by kzalloc() on the bogus allocation).
kernel BUG at arch/x86/mm/physaddr.c:28 !
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 30 UID: 0 PID: 28580 Comm: syz.2.18 Kdump: loaded
Tainted: G W 6.18.16-smp-DEV #1 NONE
Tainted: [W]=WARN
Hardware name: Google, Inc. Arcadia_IT_80/Arcadia_IT_80, BIOS 12.62.0-0 11/19/2025
RIP: 0010:__phys_addr+0x16a/0x180 arch/x86/mm/physaddr.c:28
RSP: 0018:ffffc9008329fc80 EFLAGS: 00010293
RAX: ffffffff8179110a RBX: 0000778000000010 RCX: ffff8884e6992600
RDX: 00000000000000
Remediation
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
References
Frequently Asked Questions
What is CVE-2026-80652?
CVE-2026-80652 is a known-severity vulnerability. It was published on August 28, 2026.
How severe is CVE-2026-80652?
CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.
How do I fix or remediate CVE-2026-80652?
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-80652?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-80652 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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