CVE-2026-63857

critical · 9.8

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.

9.8

CVSS

0.4%

EPSS (exploit prob.)

32nd

EPSS percentile

2026-07-19

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://git.kernel.org/stable/c/bde34e84edc8b5571fbde7e941e175a4293ee1eb
https://git.kernel.org/stable/c/d78c8ab7bd84952e053d0c622b7fc1b4ad8a19a3
https://git.kernel.org/stable/c/f670fa4b19ceddc6d215dda4997888ccba9bbc61

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-63857