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CVE-2026-46142— net: libwx: fix VF illegal register access

AI Predicted 4.4 Difficulty: Easy EPSS 0.02% · P5

Affected Version Matrix 16

VendorProductVersion RangeStatus
LinuxLinuxd4187ec2641061748480cdc944fd07653fad50d5< d3bd8040497968f6f5470018724ef7b0df92f707affected
f0b3ecdbb5bbee8ca6b2892aba3988c8a3ce858e< f6e656f7cea16b638675a2ab7d7e4cf2516c5eb0affected
a04ea57aae375bdda1cb57034d8bcbb351e1f973< 33c5bb50b9c40e8451e6aec4487a31d794b98d92affected
a04ea57aae375bdda1cb57034d8bcbb351e1f973< 68a007a701bc06fa426507c551ef12514f2e721daffected
a04ea57aae375bdda1cb57034d8bcbb351e1f973< 694de316f607fe2473d52ca0707e3918e72c1562affected
93e52b75f11a8f39b22993ae315b5b9a6b2668a3affected
6.6.117< 6.6.140affected
6.12.58< 6.12.88affected
… +8 more rows
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I. Basic Information for CVE-2026-46142

Vulnerability Information
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Vulnerability Title
net: libwx: fix VF illegal register access
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: libwx: fix VF illegal register access Register WX_CFG_PORT_ST is a PF restricted register. When a VF is initialized, attempting to read this register triggers an illegal register access, which lead to a system hang. When the device is VF, the bus function ID can be obtained directly from the PCI_FUNC(pdev->devfn).
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libwx中VF非法访问PF限制寄存器，可能导致系统挂起。
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 d4187ec2641061748480cdc944fd07653fad50d5 ~ d3bd8040497968f6f5470018724ef7b0df92f707 -
LinuxLinux 6.18 -

II. Public POCs for CVE-2026-46142

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III. Intelligence Information for CVE-2026-46142

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Patches & Fixes for CVE-2026-46142 (5)

Same Patch Batch · Linux · 2026-05-28 · 138 CVEs total

CVE-2026-461959.8 CRITICALsmb: client: validate dacloffset before building DACL pointers
CVE-2026-461379.8 CRITICALmptcp: pm: ADD_ADDR rtx: fix potential data-race
CVE-2026-461359.8 CRITICALnvmet-tcp: fix race between ICReq handling and queue teardown
CVE-2026-461159.8 CRITICALblock: add pgmap check to biovec_phys_mergeable
CVE-2026-461859.1 CRITICALsmb/client: fix out-of-bounds read in symlink_data()
CVE-2026-461199.1 CRITICALlibceph: Fix slab-out-of-bounds access in auth message processing
CVE-2026-461559.1 CRITICALsmb/client: fix out-of-bounds read in smb2_compound_op()
CVE-2026-461258.8 HIGHwifi: mac80211: remove station if connection prep fails
CVE-2026-461748.8 HIGHx86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache
CVE-2026-461988.8 HIGHbatman-adv: fix integer overflow on buff_pos
CVE-2026-461668.8 HIGHwifi: mac80211: use safe list iteration in radar detect work
CVE-2026-461138.8 HIGHKVM: x86: Fix shadow paging use-after-free due to unexpected GFN
CVE-2026-461528.8 HIGHwifi: mac80211: drop stray 'static' from fast-RX rx_result
CVE-2026-462128.8 HIGHbatman-adv: bla: prevent use-after-free when deleting claims
CVE-2026-462388.8 HIGHbatman-adv: stop caching unowned originator pointers in BAT IV
CVE-2026-461388.1 HIGHBluetooth: hci_event: Fix OOB read and infinite loop in hci_le_create_big_complete_evt
CVE-2026-462328.1 HIGHHID: playstation: Clamp num_touch_reports
CVE-2026-461977.8 HIGHdrm/amdkfd: validate SVM ioctl nattr against buffer size
CVE-2026-461767.8 HIGHRDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init()
CVE-2026-461457.8 HIGHRDMA/mana: Validate rx_hash_key_len

Showing top 20 of 138 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46142

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