CVE-2026-63857: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: 23020f04932701d5c8363e60756f12b43b8ed752 преди dba5f4959653e4c212beb746594952e8645d1115; 23020f04932701d5c8363e60756f12b43b8ed752 преди f670fa4b19ceddc6d215dda4997888ccba9bbc61; 23020f04932701d5c8363e60756f12b43b8ed752 преди d78c8ab7bd84952e053d0c622b7fc1b4ad8a19a3; 23020f04932701d5c8363e60756f12b43b8ed752 преди bde34e84edc8b5571fbde7e941e175a4293ee1eb
• Linux Linux: 6.11; преди 6.11; 6.12.114 до 6.12.*; 6.18.33 до 6.18.*; 7.0.10 до 7.0.*; от 7.1 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-63857
• https://nvd.nist.gov/vuln/detail/CVE-2026-63857
• https://git.kernel.org/stable/c/dba5f4959653e4c212beb746594952e8645d1115
• https://git.kernel.org/stable/c/f670fa4b19ceddc6d215dda4997888ccba9bbc61
• https://git.kernel.org/stable/c/d78c8ab7bd84952e053d0c622b7fc1b4ad8a19a3
• https://git.kernel.org/stable/c/bde34e84edc8b5571fbde7e941e175a4293ee1eb