CVE-2026-74616

Last refreshed2026-10-15

Status: UPDATED | Advisory ID: CVE-2026-74616

Key Details

CVE	CVE-2026-74616
CVSS Score / Version	9.8 (Critical) / CVSS v3.1
Updated	2026-10-14
CVSS Vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

xdp: reject clones that overrun skb_shared_info tailroom

xdpf_clone() clones broadcast copies into a single page and sets

frame_sz to PAGE_SIZE. __xdp_build_skb_from_frame() later treats that

page like a normal XDP frame and expects the usual skb_shared_info

tailroom at the end of the buffer.

The current check only rejects frames whose linear xdp_frame header,

headroom, and packet data exceed PAGE_SIZE. A source frame backed by a

larger allocation can still satisfy that check while extending into the

clone's required shared-info area. When such a clone is converted back

into an skb, build_skb_around() places skb_shared_info over live packet

bytes and later writes can corrupt XDP return metadata.

Reject clones unless their linear area fits inside

SKB_WITH_OVERHEAD(PAGE_SIZE), matching the tailroom requirement already

enforced by the XDP-to-skb conversion path. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-74616
CVE	https://www.cve.org/CVERecord?id=CVE-2026-74616

Source

Reference

NVD

CVE