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.
References
Configurations
Configuration 1 (hide)
|
History
28 Aug 2024, 19:58
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/f1ab15a09492a5ae8ab1e2c35ba2cf9e150d25ee - Patch | |
| References | () https://git.kernel.org/stable/c/fd2b613bc4c508e55c1221c6595bb889812a4fea - Patch | |
| References | () https://git.kernel.org/stable/c/c44711b78608c98a3e6b49ce91678cd0917d5349 - Patch | |
| References | () https://git.kernel.org/stable/c/dcc7440f32c7a26b067aff6e7d931ec593024a79 - Patch | |
| References | () https://git.kernel.org/stable/c/a6f4d0ec170a46b5f453cacf55dff5989b42bbfa - Patch | |
| References | () https://git.kernel.org/stable/c/cbf18d8128a753cb632bef39470d19befd9c7347 - Patch | |
| References | () https://git.kernel.org/stable/c/a86490a3712cc513113440a606a0e77130abd47c - Patch | |
| References | () https://git.kernel.org/stable/c/87d6bdc006f0cbf297a3b2ad6e40ede4c3ee5dc2 - Patch | |
| CPE | cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:* |
|
| First Time |
Linux
Linux linux Kernel |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CWE | CWE-476 |
12 Jul 2024, 13:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2024-07-12 13:15
Updated : 2024-08-28 19:58
NVD link : CVE-2024-39506
Mitre link : CVE-2024-39506
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-476
NULL Pointer Dereference