In the Linux kernel, the following vulnerability has been resolved: net: skbuff: preserve shared-frag marker during coalescing skb_try_coalesce() can attach paged frags from @from to @to. If @from has SKBFL_SHARED_FRAG set, the resulting @to skb can contain the same externally-owned or page-cache-backed frags, but the shared-frag marker is currently lost. That breaks the invariant relied on by later in-place writers. In particular, ESP input checks skb_has_shared_frag() before deciding whether an uncloned nonlinear skb can skip skb_cow_data(). If TCP receive coalescing has moved shared frags into an unmarked skb, ESP can see skb_has_shared_frag() as false and decrypt in place over page-cache backed frags. Propagate SKBFL_SHARED_FRAG when skb_try_coalesce() transfers paged frags. The tailroom copy path does not need the marker because it copies bytes into @to's linear data rather than transferring frag descriptors.
[POC] CVE-2026-46300 — CVE-2026-46300
CVE-2026-43284 - CVE-2026-43500 - CVE-2026-46300 Variant of dirtyfrag exploit
[POC] CVE-2026-46300 — Fragnesia-go
A Go implementation of fragnesia (CVE-2026-46300)
[POC] CVE-2026-46300 — CVE-2026-46300
CVE-2026-46300
[POC] CVE-2026-46300 — CVE-2026-46300
CVE-2026-46300
[POC] GHSA-3mgp-fx93-9xv5 — CVE-2026-46300
Technical analysis of CVE-2026-46300 (Fragnesia), a Linux kernel page-cache write vulnerability that enables local privilege escalation through SKBFL_SHARED_FRAG invariant violations in the networking stack.
[POC] CVE-2026-46300 — CVE-2026-46300-Fragnesia---TryHackMe-Lab-Walkthrough
This project documents the completion and analysis of the Fragnesia (CVE-2026-46300) TryHackMe lab, which demonstrates a Linux kernel page-cache corruption vulnerability capable of achieving local priviledge escalation through modification of cached file pages without altering files on disk.
[POC] CVE-2026-46300 — Fragnesia
Add go CVE-2026-46300 (Fragnesia) local privilege escalation exploit
[POC] CVE-2026-46300 — CVE-2026-46300
Linux kernel root exploit
[POC] CVE-2026-46300 — CVE-2026-46300-Fragnesia---TryHackMe-Lab-Project
The project documents the completion and analysis of the Fragnesia (CVE-2026-46300) TryHackME lab, which demonstrates a Linux kernel page -cache corruption vulnerability capable of achieving local privilege escalation through modification of cached file pages without altering files on disk.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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