CVE-2026-63857

Last refreshed2026-10-23

Status: UPDATED | Advisory ID: CVE-2026-63857

Key Details

CVE	CVE-2026-63857
CVSS Score / Version	9.8 (Critical) / CVSS v3.1
Updated	2026-10-21
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:

net: airoha: Do not read uninitialized fragment address in airoha_dev_xmit()

The transmit loop in airoha_dev_xmit() reads fragment address and length

during its final iteration, when the loop index equals

skb_shinfo(skb)->nr_frags, at which point the fragment data is

uninitialized. While these values are never consumed, the read itself is

unsafe and may trigger a page fault. Fix this by avoiding the fragment

read on the last iteration.

Additionally, move the skb pointer from the first to the last used packet

descriptor, so that airoha_qdma_tx_napi_poll() defers freeing the skb

until the final descriptor is processed. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-63857
CVE	https://www.cve.org/CVERecord?id=CVE-2026-63857

Source

Reference

NVD

CVE