cbcvebase.
CVE-2024-39506
published 2024-07-12

CVE-2024-39506: In the Linux kernel, the following vulnerability has been resolved: liquidio: Adjust a NULL pointer handling path in lio_vf_rep_copy_packet In…

PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.29%
21.2th percentile
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

26 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.99-1 (bookworm)linux 6.1.99-1 (bookworm)
debianlinux-6.1< linux 6.1.99-1 (bookworm)linux 6.1.99-1 (bookworm)
linuxlinux
linuxlinux>= 1f233f327913f3dee0602cba9c64df1903772b55 < 87d6bdc006f0cbf297a3b2ad6e40ede4c3ee5dc287d6bdc006f0cbf297a3b2ad6e40ede4c3ee5dc2
linuxlinux>= 1f233f327913f3dee0602cba9c64df1903772b55 < dcc7440f32c7a26b067aff6e7d931ec593024a79dcc7440f32c7a26b067aff6e7d931ec593024a79
linuxlinux>= 1f233f327913f3dee0602cba9c64df1903772b55 < cbf18d8128a753cb632bef39470d19befd9c7347cbf18d8128a753cb632bef39470d19befd9c7347
linuxlinux>= 1f233f327913f3dee0602cba9c64df1903772b55 < a86490a3712cc513113440a606a0e77130abd47ca86490a3712cc513113440a606a0e77130abd47c
linuxlinux>= 1f233f327913f3dee0602cba9c64df1903772b55 < f1ab15a09492a5ae8ab1e2c35ba2cf9e150d25eef1ab15a09492a5ae8ab1e2c35ba2cf9e150d25ee
linuxlinux>= 1f233f327913f3dee0602cba9c64df1903772b55 < fd2b613bc4c508e55c1221c6595bb889812a4feafd2b613bc4c508e55c1221c6595bb889812a4fea
linuxlinux>= 1f233f327913f3dee0602cba9c64df1903772b55 < a6f4d0ec170a46b5f453cacf55dff5989b42bbfaa6f4d0ec170a46b5f453cacf55dff5989b42bbfa
linuxlinux>= 1f233f327913f3dee0602cba9c64df1903772b55 < c44711b78608c98a3e6b49ce91678cd0917d5349c44711b78608c98a3e6b49ce91678cd0917d5349
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.221-15.10.221-1
linuxlinux_kernel>= 0 < 6.1.99-16.1.99-1
linuxlinux_kernel>= 0 < 6.9.7-16.9.7-1
linuxlinux_kernel>= 0 < 6.9.7-16.9.7-1
linuxlinux_kernel>= 0 < 5.4.0-195.2155.4.0-195.215
linuxlinux_kernel>= 0 < 5.15.0-121.1315.15.0-121.131
linuxlinux_kernel>= 0 < 6.8.0-44.446.8.0-44.44
linuxlinux_kernel>= 4.15 < 4.19.3174.19.317
linuxlinux_kernel>= 4.20 < 5.4.2795.4.279
linuxlinux_kernel>= 5.11 < 5.15.1625.15.162
linuxlinux_kernel>= 5.16 < 6.1.956.1.95
linuxlinux_kernel>= 5.5 < 5.10.2215.10.221
linuxlinux_kernel>= 6.2 < 6.6.356.6.35

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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