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CVE-2024-39506— liquidio: Adjust a NULL pointer handling path in lio_vf_rep_copy_packet

EPSS 0.01% · P1

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinux1f233f327913f3dee0602cba9c64df1903772b55< 87d6bdc006f0cbf297a3b2ad6e40ede4c3ee5dc2affected
1f233f327913f3dee0602cba9c64df1903772b55< dcc7440f32c7a26b067aff6e7d931ec593024a79affected
1f233f327913f3dee0602cba9c64df1903772b55< cbf18d8128a753cb632bef39470d19befd9c7347affected
1f233f327913f3dee0602cba9c64df1903772b55< a86490a3712cc513113440a606a0e77130abd47caffected
1f233f327913f3dee0602cba9c64df1903772b55< f1ab15a09492a5ae8ab1e2c35ba2cf9e150d25eeaffected
1f233f327913f3dee0602cba9c64df1903772b55< fd2b613bc4c508e55c1221c6595bb889812a4feaaffected
1f233f327913f3dee0602cba9c64df1903772b55< a6f4d0ec170a46b5f453cacf55dff5989b42bbfaaffected
1f233f327913f3dee0602cba9c64df1903772b55< c44711b78608c98a3e6b49ce91678cd0917d5349affected
… +10 more rows
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I. Basic Information for CVE-2024-39506

Vulnerability Information
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Vulnerability Title
liquidio: Adjust a NULL pointer handling path in lio_vf_rep_copy_packet
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于 liquidio 组件在 lio_vf_rep_copy_packet 函数中存在空指针处理路径问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 1f233f327913f3dee0602cba9c64df1903772b55 ~ 87d6bdc006f0cbf297a3b2ad6e40ede4c3ee5dc2 -
LinuxLinux 4.15 -

II. Public POCs for CVE-2024-39506

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III. Intelligence Information for CVE-2024-39506

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Same Patch Batch · Linux · 2024-07-12 · 122 CVEs total

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CVE-2024-40964ALSA: hda: cs35l41: Possible null pointer dereference in cs35l41_hda_unbind()
CVE-2024-40963mips: bmips: BCM6358: make sure CBR is correctly set
CVE-2024-40961ipv6: prevent possible NULL deref in fib6_nh_init()
CVE-2024-40962btrfs: zoned: allocate dummy checksums for zoned NODATASUM writes
CVE-2024-40951ocfs2: fix NULL pointer dereference in ocfs2_abort_trigger()
CVE-2024-40950mm: huge_memory: fix misused mapping_large_folio_support() for anon folios
CVE-2024-40949mm: shmem: fix getting incorrect lruvec when replacing a shmem folio
CVE-2024-40952ocfs2: fix NULL pointer dereference in ocfs2_journal_dirty()

Showing top 20 of 122 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-39506

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