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CVE-2026-43342— usb: gadget: f_rndis: Protect RNDIS options with mutex

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 gadget f_rndis中类/子类/协议选项未受互斥锁保护，可通过configfs并发访问导致竞争条件。

AI Predicted 4.3 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 73517cf49bd449122b615d2b7a6bb835f02252e5< 0a75d97c53477a59c0aa1c65f69038c719f9c5b8 affected
73517cf49bd449122b615d2b7a6bb835f02252e5< c1b3d5b0acb194efe20fc5864ee03439fa7bd45c affected
73517cf49bd449122b615d2b7a6bb835f02252e5< 65b7dbf80a1627667c241fff7c1c224f3118014f affected
73517cf49bd449122b615d2b7a6bb835f02252e5< cb5316b37288ab8791584e32f114c4f41ad45b67 affected
73517cf49bd449122b615d2b7a6bb835f02252e5< 7d8fa3b8783ab95a46e20d97fbeeede719b2efda affected
73517cf49bd449122b615d2b7a6bb835f02252e5< 446f1842cda929c40d4697722bfdcfb334bc9692 affected
73517cf49bd449122b615d2b7a6bb835f02252e5< 209decd3f7901df9842b83f2540dc8685e344a07 affected
73517cf49bd449122b615d2b7a6bb835f02252e5< 8d8c68b1fc06ece60cf43e1306ff0f4ac121547e affected
… +10 more rows
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I. Basic Information for CVE-2026-43342

Vulnerability Information
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Vulnerability Title
usb: gadget: f_rndis: Protect RNDIS options with mutex
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_rndis: Protect RNDIS options with mutex The class/subclass/protocol options are suspectible to race conditions as they can be accessed concurrently through configfs. Use existing mutex to protect these options. This issue was identified during code inspection.
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 gadget f_rndis中类/子类/协议选项未受互斥锁保护，可通过configfs并发访问导致竞争条件。
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 73517cf49bd449122b615d2b7a6bb835f02252e5 ~ 0a75d97c53477a59c0aa1c65f69038c719f9c5b8 -
Linux Linux 4.14 -

II. Public POCs for CVE-2026-43342

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III. Intelligence Information for CVE-2026-43342

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Patches & Fixes for CVE-2026-43342 (8)

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

CVE-2026-43341 9.8 CRITICAL net/ipv6: ioam6: prevent schema length wraparound in trace fill
CVE-2026-43402 9.8 CRITICAL kthread: consolidate kthread exit paths to prevent use-after-free
CVE-2026-43414 9.8 CRITICAL scsi: qla2xxx: Completely fix fcport double free
CVE-2026-43384 9.8 CRITICAL net/tcp-ao: Fix MAC comparison to be constant-time
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-2026-43376 9.8 CRITICAL ksmbd: fix use-after-free by using call_rcu() for oplock_info
CVE-2026-43465 9.8 CRITICAL net/mlx5e: RX, Fix XDP multi-buf frag counting for striding RQ
CVE-2026-43378 9.8 CRITICAL smb: server: fix use-after-free in smb2_open()
CVE-2026-43383 9.4 CRITICAL net/tcp-md5: Fix MAC comparison to be constant-time
CVE-2026-43406 9.1 CRITICAL libceph: prevent potential out-of-bounds reads in process_message_header()
CVE-2026-43407 9.1 CRITICAL libceph: Fix potential out-of-bounds access in ceph_handle_auth_reply()
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-2026-43365 8.2 HIGH xfs: fix undersized l_iclog_roundoff values
CVE-2026-43466 8.2 HIGH net/mlx5e: Fix DMA FIFO desync on error CQE SQ recovery

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-2026-43342

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