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First seenSep 17, 2026
Last mentionedSep 17, 2026

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The skb that wasn't freed - the Fragnesia primitive via Open vSwitch

Doyensec details CVE-2026-90049 in Open vSwitch, enabling deterministic Linux kernel local privilege escalation on default major distribution installs.

Lobsters · securitySep 17, 08:39 UTC · Sep 17, 2026VulnerabilityCVE-2026-90049 CVE-2026-89487 CVE-2026-80977+211 · 5 reads

Related CVEs

by mentions

CVE-2026-900499.3
Linux kernel skb_zerocopy() error-path flaw risks UAF/memory corruption via Open vSwitch
published Sep 16, 2026Linux kernel (net/skbuff skb_zerocopy(), reachable via Open vSwitch kernel datapath and nfnetlink_queue)
CVE-2026-4328494%8.8
Linux kernel ESP-in-UDP decrypts in place over shared splice pages (CWE-123)
published May 8, 2026Linux kernelPoC
CVE-2026-894877.8
Linux kernel Open vSwitch error-path bug enables local page-cache writes
published Sep 11, 2026Linux kernel (openvswitch module)
CVE-2026-4350093%7.8
Out-of-bounds write in Linux kernel AF_RXRPC decryption enables root access
published May 11, 2026Linux kernel
CVE-2026-809777.8
Shared zerocopy state corruption in Linux kernel via Open vSwitch recirculation clones
published Sep 11, 2026Linux kernel

Appears with

Open vSwitchproduct · 1
Doyensecvendor · 1
Linux Foundationvendor · 1
Linux kernelproduct · 1

Entities are extracted by the model from each article. First seen Sep 17, 2026, last mentioned Sep 17, 2026. Watching keeps it in this browser only (no account); the watchlist page and dashboard alerts use it.