Vulnerability
CVE-2026-99999 — Linux improper input validation
critical 9.3 4 stories · 4 outlets
Impacted if
- Linux 2.6.27
Improper input validation · local access · no login
In the Linux kernel, the following vulnerability has been resolved: ipv4: validate checksum_start before completing checksum If a packet with bad checksum metadata gets into the ipv4 stack, skb_chec
First seen by AX-NEWS · latest story . Severity: NVD, or the CVE record while the NVD has not scored it. This product uses data from the NVD API but is not endorsed or certified by the NVD.
Coverage
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PwnEscape: Guest-to-Host KVM Escape (CVE-2026-99999)
Comments
- Linux kernel blasted 9.3-point super-high-risk loophole to attack the host by a "breakout" virtual machine
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Critical PwnEscape Linux Kernel Vulnerability Lets Guest VMs Read Host Memory
A newly disclosed critical flaw in the Linux kernel allows code inside a virtual machine to read memory on the host computer it runs on. A researcher demonstrated the leak against Vercel's live cloud sandboxes, and Vercel confirmed it. The…