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CVE-2026-31672— wifi: rt2x00usb: fix devres lifetime

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rt2x00usb驱动中USB锚点生命周期绑定到父设备而非接口，可能导致驱动解绑时内存泄漏。

AI Predicted 3.3 Difficulty: Trivial EPSS 0.16% · P5

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 8b4c0009313f3d42e2540e3e1f776097dd0db73d< 64a457f6afbf15f984d95201a9a1e71eed3f9dd1 affected
8b4c0009313f3d42e2540e3e1f776097dd0db73d< 65518a6965d527c53013947031f26754f6a4f6af affected
8b4c0009313f3d42e2540e3e1f776097dd0db73d< 15b233e33b35b927bd8d0044c15325564ea1ba24 affected
8b4c0009313f3d42e2540e3e1f776097dd0db73d< 1de5c76bf40e9cdeebf54662f63011fb10fa452f affected
8b4c0009313f3d42e2540e3e1f776097dd0db73d< b245db719bc7e57abf48bd5701662b270c3880f7 affected
8b4c0009313f3d42e2540e3e1f776097dd0db73d< e360d15fcb1e819eef49e3d4434d8050542eed16 affected
8b4c0009313f3d42e2540e3e1f776097dd0db73d< c99f198841b41735796e2ddfcd573783fb552eb9 affected
8b4c0009313f3d42e2540e3e1f776097dd0db73d< 25369b22223d1c56e42a0cd4ac9137349d5a898e affected
… +10 more rows
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I. Basic Information for CVE-2026-31672

Vulnerability Information
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Vulnerability Title
wifi: rt2x00usb: fix devres lifetime
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: rt2x00usb: fix devres lifetime USB drivers bind to USB interfaces and any device managed resources should have their lifetime tied to the interface rather than parent USB device. This avoids issues like memory leaks when drivers are unbound without their devices being physically disconnected (e.g. on probe deferral or configuration changes). Fix the USB anchor lifetime so that it is released on driver unbind.
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rt2x00usb驱动中USB锚点生命周期绑定到父设备而非接口，可能导致驱动解绑时内存泄漏。
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 8b4c0009313f3d42e2540e3e1f776097dd0db73d ~ 64a457f6afbf15f984d95201a9a1e71eed3f9dd1 -
Linux Linux 4.7 -

II. Public POCs for CVE-2026-31672

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III. Intelligence Information for CVE-2026-31672

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Same Patch Batch · Linux · 2026-04-24 · 138 CVEs total

CVE-2026-31609 9.8 CRITICAL smb: client: avoid double-free in smbd_free_send_io() after smbd_send_batch_flush()
CVE-2026-31608 9.8 CRITICAL smb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list
CVE-2026-31607 9.8 CRITICAL usbip: validate number_of_packets in usbip_pack_ret_submit()
CVE-2026-31669 9.8 CRITICAL mptcp: fix slab-use-after-free in __inet_lookup_established
CVE-2026-31668 9.8 CRITICAL seg6: separate dst_cache for input and output paths in seg6 lwtunnel
CVE-2026-31536 9.8 CRITICAL smb: server: let send_done handle a completion without IB_SEND_SIGNALED
CVE-2026-31657 9.8 CRITICAL batman-adv: hold claim backbone gateways by reference
CVE-2026-31633 9.8 CRITICAL rxrpc: Fix integer overflow in rxgk_verify_response()
CVE-2026-31637 9.8 CRITICAL rxrpc: reject undecryptable rxkad response tickets
CVE-2026-31649 9.8 CRITICAL net: stmmac: fix integer underflow in chain mode
CVE-2026-31589 9.8 CRITICAL mm: call ->free_folio() directly in folio_unmap_invalidate()
CVE-2026-31659 9.8 CRITICAL batman-adv: reject oversized global TT response buffers
CVE-2026-31636 9.1 CRITICAL rxrpc: fix RESPONSE authenticator parser OOB read
CVE-2026-31622 8.8 HIGH NFC: digital: Bounds check NFC-A cascade depth in SDD response handler
CVE-2026-31558 8.8 HIGH LoongArch: KVM: Make kvm_get_vcpu_by_cpuid() more robust
CVE-2026-31553 8.8 HIGH KVM: arm64: Fix the descriptor address in __kvm_at_swap_desc()
CVE-2026-31588 8.8 HIGH KVM: x86: Use scratch field in MMIO fragment to hold small write values
CVE-2026-31570 8.8 HIGH can: gw: fix OOB heap access in cgw_csum_crc8_rel()
CVE-2026-31629 8.8 HIGH nfc: llcp: add missing return after LLCP_CLOSED checks
CVE-2026-31611 8.6 HIGH ksmbd: require 3 sub-authorities before reading sub_auth[2]

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-2026-31672

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