CVE - CVE-2024-39506

CVE-ID
CVE-2024-39506	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/87d6bdc006f0cbf297a3b2ad6e40ede4c3ee5dc2 URL:https://git.kernel.org/stable/c/87d6bdc006f0cbf297a3b2ad6e40ede4c3ee5dc2 MISC:https://git.kernel.org/stable/c/a6f4d0ec170a46b5f453cacf55dff5989b42bbfa URL:https://git.kernel.org/stable/c/a6f4d0ec170a46b5f453cacf55dff5989b42bbfa MISC:https://git.kernel.org/stable/c/a86490a3712cc513113440a606a0e77130abd47c URL:https://git.kernel.org/stable/c/a86490a3712cc513113440a606a0e77130abd47c MISC:https://git.kernel.org/stable/c/c44711b78608c98a3e6b49ce91678cd0917d5349 URL:https://git.kernel.org/stable/c/c44711b78608c98a3e6b49ce91678cd0917d5349 MISC:https://git.kernel.org/stable/c/cbf18d8128a753cb632bef39470d19befd9c7347 URL:https://git.kernel.org/stable/c/cbf18d8128a753cb632bef39470d19befd9c7347 MISC:https://git.kernel.org/stable/c/dcc7440f32c7a26b067aff6e7d931ec593024a79 URL:https://git.kernel.org/stable/c/dcc7440f32c7a26b067aff6e7d931ec593024a79 MISC:https://git.kernel.org/stable/c/f1ab15a09492a5ae8ab1e2c35ba2cf9e150d25ee URL:https://git.kernel.org/stable/c/f1ab15a09492a5ae8ab1e2c35ba2cf9e150d25ee MISC:https://git.kernel.org/stable/c/fd2b613bc4c508e55c1221c6595bb889812a4fea URL:https://git.kernel.org/stable/c/fd2b613bc4c508e55c1221c6595bb889812a4fea
Assigning CNA
kernel.org
Date Record Created
20240625	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240625)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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