CVSS 5.5 · Medium EPSS 0,29%
Kerentanan NULL Pointer Dereference pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.
In the Linux kernel, the following vulnerability has been resolved: liquidio: Adjust a NULL pointer handling path in lio_vf_rep_copy_packet In lio_vf_rep_copy_packet() pg_info->page is compared to a NULL value, but then it is unconditionally passed to skb_add_rx_frag() which looks strange and could lead to null pointer dereference. lio_vf_rep_copy_packet() call trace looks like: octeon_droq_process_packets octeon_droq_fast_process_packets octeon_droq_dispatch_pkt octeon_create_recv_info ...search in the dispatch_list... ->disp_fn(rdisp->rinfo, ...) lio_vf_rep_pkt_recv(struct octeon_recv_info *recv_info, ...) In this path there is no code which sets pg_info->page to NULL. So this check looks unneeded and doesn't solve potential problem. But I guess the author had reason to add a check and I have no such card and can't do real test. In addition, the code in the function liquidio_push_packet() in liquidio/lio_core.c does exactly the same. Based on this, I consider the most acceptable compromise solution to adjust this issue by moving skb_add_rx_frag() into conditional scope. Found by Linux Verification Center (linuxtesting.org) with SVACE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Versi 4.15 hingga sebelum 4.19.317 |
| linux | linux kernel | Versi 4.20 hingga sebelum 5.4.279 |
| linux | linux kernel | Versi 5.5 hingga sebelum 5.10.221 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.162 |
| linux | linux kernel | Versi 5.16 hingga sebelum 6.1.95 |
| linux | linux kernel | Versi 6.2 hingga sebelum 6.6.35 |
| linux | linux kernel | Versi 6.7 hingga sebelum 6.9.6 |
| linux | linux kernel | Versi 6.10 rc1 |
| linux | linux kernel | Versi 6.10 rc2 |
| linux | linux kernel | Versi 6.10 rc3 |