syzbot reported that nf_reject_ip6_tcphdr_put() was possibly sending garbage on the four reserved tcp bits (th->res1)
Use skb_put_zero() to clear the whole TCP header, as done in nf_reject_ip_tcphdr_put()
| Platform | Package | Release Date | Advisory |
|---|---|---|---|
| Amazon Linux 2 - Kernel-5.10 Extra | kernel | 2024-10-24 16:45 | ALAS2KERNEL-5.10-2024-072 |
| Amazon Linux 2 - Kernel-5.15 Extra | kernel | 2024-10-24 16:45 | ALAS2KERNEL-5.15-2024-056 |
| Amazon Linux 2 - Kernel-5.4 Extra | kernel | 2024-12-05 01:00 | ALAS2KERNEL-5.4-2024-088 |
| Amazon Linux 2 - Kernel-5.4 Extra | kernel | 2025-01-21 20:23 | ALAS2KERNEL-5.4-2025-090 |
| Amazon Linux 2023 | kernel | 2024-11-13 12:28 | ALAS2023-2024-765 |
| Amazon Linux 2023 | kernel | 2025-01-06 19:21 | ALAS2023-2025-794 |
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
| NVD | CVSSv3 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
