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CVE-2026-43430— usb: yurex: fix race in probe

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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usb yurex驱动在探测过程中bbu成员未在URB提交前设置为未初始化值，导致竞争条件覆盖已检索数据。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.11% · P1

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 6bc235a2e24a5ef677daee3fd4f74f6cd643e23c< a7934d7202a39c3160aa30521c382c7b744ae4a2 affected
6bc235a2e24a5ef677daee3fd4f74f6cd643e23c< a8b3b3d730acea1640bc89465f2832cf06a1e13a affected
6bc235a2e24a5ef677daee3fd4f74f6cd643e23c< 687d26d43a5aaf44323ce7d601cf242bb87e9559 affected
6bc235a2e24a5ef677daee3fd4f74f6cd643e23c< 939e3d17b843b0bae70467fef4481069d73c8520 affected
6bc235a2e24a5ef677daee3fd4f74f6cd643e23c< 3cec135415a89723e2d38e1c8cc5098203355965 affected
6bc235a2e24a5ef677daee3fd4f74f6cd643e23c< a41d3d9202e951995cfac6248c565423079c71fa affected
6bc235a2e24a5ef677daee3fd4f74f6cd643e23c< af83e92c329f11139d5eea2b5b7b83c26c3f67e7 affected
6bc235a2e24a5ef677daee3fd4f74f6cd643e23c< 7a875c09899ba0404844abfd8f0d54cdc481c151 affected
… +10 more rows
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I. Basic Information for CVE-2026-43430

Vulnerability Information
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Vulnerability Title
usb: yurex: fix race in probe
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: usb: yurex: fix race in probe The bbu member of the descriptor must be set to the value standing for uninitialized values before the URB whose completion handler sets bbu is submitted. Otherwise there is a window during which probing can overwrite already retrieved data.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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usb yurex驱动在探测过程中bbu成员未在URB提交前设置为未初始化值，导致竞争条件覆盖已检索数据。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 6bc235a2e24a5ef677daee3fd4f74f6cd643e23c ~ a7934d7202a39c3160aa30521c382c7b744ae4a2 -
Linux Linux 2.6.37 -

II. Public POCs for CVE-2026-43430

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III. Intelligence Information for CVE-2026-43430

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Patches & Fixes for CVE-2026-43430 (8)

Same Patch Batch · Linux · 2026-05-08 · 197 CVEs total

CVE-2026-43384 9.8 CRITICAL net/tcp-ao: Fix MAC comparison to be constant-time
CVE-2026-43341 9.8 CRITICAL net/ipv6: ioam6: prevent schema length wraparound in trace fill
CVE-2026-43304 9.8 CRITICAL libceph: define and enforce CEPH_MAX_KEY_LEN
CVE-2026-43379 9.8 CRITICAL ksmbd: fix use-after-free in smb_lazy_parent_lease_break_close()
CVE-2026-43378 9.8 CRITICAL smb: server: fix use-after-free in smb2_open()
CVE-2026-43465 9.8 CRITICAL net/mlx5e: RX, Fix XDP multi-buf frag counting for striding RQ
CVE-2026-43414 9.8 CRITICAL scsi: qla2xxx: Completely fix fcport double free
CVE-2026-43376 9.8 CRITICAL ksmbd: fix use-after-free by using call_rcu() for oplock_info
CVE-2026-43402 9.8 CRITICAL kthread: consolidate kthread exit paths to prevent use-after-free
CVE-2026-43383 9.4 CRITICAL net/tcp-md5: Fix MAC comparison to be constant-time
CVE-2026-43407 9.1 CRITICAL libceph: Fix potential out-of-bounds access in ceph_handle_auth_reply()
CVE-2026-43406 9.1 CRITICAL libceph: prevent potential out-of-bounds reads in process_message_header()
CVE-2026-43284 8.8 HIGH xfrm: esp: avoid in-place decrypt on shared skb frags
CVE-2026-43334 8.8 HIGH Bluetooth: SMP: force responder MITM requirements before building the pairing response
CVE-2026-43322 8.8 HIGH Bluetooth: hci_sync: Fix UAF in le_read_features_complete
CVE-2026-43403 8.8 HIGH nsfs: tighten permission checks for ns iteration ioctls
CVE-2026-43391 8.8 HIGH nsfs: tighten permission checks for handle opening
CVE-2026-43291 8.3 HIGH net: nfc: nci: Fix parameter validation for packet data
CVE-2026-43466 8.2 HIGH net/mlx5e: Fix DMA FIFO desync on error CQE SQ recovery
CVE-2026-43365 8.2 HIGH xfs: fix undersized l_iclog_roundoff values

Showing top 20 of 197 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-43430

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