Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1f233f327913f3dee0602cba9c64df1903772b55 before 87d6bdc006f0cbf297a3b2ad6e40ede4c3ee5dc2; affected 1f233f327913f3dee0602cba9c64df1903772b55 before dcc7440f32c7a26b067aff6e7d931ec593024a79; affected 1f233f327913f3dee0602cba9c64df1903772b55 before cbf18d8128a753cb632bef39470d19befd9c7347; affected 1f233f327913f3dee0602cba9c64df1903772b55 before a86490a3712cc513113440a606a0e77130abd47c; affected 1f233f327913f3dee0602cba9c64df1903772b55 before f1ab15a09492a5ae8ab1e2c35ba2cf9e150d25ee; affected 1f233f327913f3dee0602cba9c64df1903772b55 before fd2b613bc4c508e55c1221c6595bb889812a4fea; affected 1f233f327913f3dee0602cba9c64df1903772b55 before a6f4d0ec170a46b5f453cacf55dff5989b42bbfa; affected 1f233f327913f3dee0602cba9c64df1903772b55 before c44711b78608c98a3e6b49ce91678cd0917d5349 |
| Linux / Linux | affected 4.15; unaffected 0 before 4.15; unaffected 4.19.317 through 4.19.*; unaffected 5.4.279 through 5.4.*; unaffected 5.10.221 through 5.10.*; unaffected 5.15.162 through 5.15.*; unaffected 6.1.95 through 6.1.*; unaffected 6.6.35 through 6.6.*; unaffected 6.9.6 through 6.9.*; unaffected 6.10 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/87d6bdc006f0cbf297a3b2ad6e40ede4c3ee5dc2
- https://git.kernel.org/stable/c/dcc7440f32c7a26b067aff6e7d931ec593024a79
- https://git.kernel.org/stable/c/cbf18d8128a753cb632bef39470d19befd9c7347
- https://git.kernel.org/stable/c/a86490a3712cc513113440a606a0e77130abd47c
- https://git.kernel.org/stable/c/f1ab15a09492a5ae8ab1e2c35ba2cf9e150d25ee
- https://git.kernel.org/stable/c/fd2b613bc4c508e55c1221c6595bb889812a4fea
- https://git.kernel.org/stable/c/a6f4d0ec170a46b5f453cacf55dff5989b42bbfa
- https://git.kernel.org/stable/c/c44711b78608c98a3e6b49ce91678cd0917d5349
ADP enrichment
No English description supplied.
- https://git.kernel.org/stable/c/87d6bdc006f0cbf297a3b2ad6e40ede4c3ee5dc2
- https://git.kernel.org/stable/c/dcc7440f32c7a26b067aff6e7d931ec593024a79
- https://git.kernel.org/stable/c/cbf18d8128a753cb632bef39470d19befd9c7347
- https://git.kernel.org/stable/c/a86490a3712cc513113440a606a0e77130abd47c
- https://git.kernel.org/stable/c/f1ab15a09492a5ae8ab1e2c35ba2cf9e150d25ee
- https://git.kernel.org/stable/c/fd2b613bc4c508e55c1221c6595bb889812a4fea
- https://git.kernel.org/stable/c/a6f4d0ec170a46b5f453cacf55dff5989b42bbfa
- https://git.kernel.org/stable/c/c44711b78608c98a3e6b49ce91678cd0917d5349
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
No English description supplied.
No references supplied.