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CVE-2026-23031— can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak

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，该漏洞源于未重新锚定已完成的URB，可能导致内存泄漏。

AI Predicted 3.3 Difficulty: Easy EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux d08e973a77d128b25e01a08c34d89593fdf222da< 9c151898cc259a7784be60ba38664f42ede39b31 affected
d08e973a77d128b25e01a08c34d89593fdf222da< ec5ccc2af9e5b045671f3f604b57512feda8bcc5 affected
d08e973a77d128b25e01a08c34d89593fdf222da< f905bcfa971edb89e398c98957838d8c6381c0c7 affected
d08e973a77d128b25e01a08c34d89593fdf222da< 08624b7206ddb9148eeffc2384ebda2c47b6d1e9 affected
d08e973a77d128b25e01a08c34d89593fdf222da< 9f669a38ca70839229b7ba0f851820850a2fe1f7 affected
d08e973a77d128b25e01a08c34d89593fdf222da< 7352e1d5932a0e777e39fa4b619801191f57e603 affected
3.16 affected
< 3.16 unaffected
… +6 more rows
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I. Basic Information for CVE-2026-23031

Vulnerability Information
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Vulnerability Title
can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak In gs_can_open(), the URBs for USB-in transfers are allocated, added to the parent->rx_submitted anchor and submitted. In the complete callback gs_usb_receive_bulk_callback(), the URB is processed and resubmitted. In gs_can_close() the URBs are freed by calling usb_kill_anchored_urbs(parent->rx_submitted). However, this does not take into account that the USB framework unanchors the URB before the complete function is called. This means that once an in-URB has been completed, it is no longer anchored and is ultimately not released in gs_can_close(). Fix the memory leak by anchoring the URB in the gs_usb_receive_bulk_callback() to the parent->rx_submitted anchor.
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，该漏洞源于未重新锚定已完成的URB，可能导致内存泄漏。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux d08e973a77d128b25e01a08c34d89593fdf222da ~ 9c151898cc259a7784be60ba38664f42ede39b31 -
Linux Linux 3.16 -

II. Public POCs for CVE-2026-23031

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III. Intelligence Information for CVE-2026-23031

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Same Patch Batch · Linux · 2026-01-31 · 37 CVEs total

CVE-2025-71183 9.1 CRITICAL btrfs: always detect conflicting inodes when logging inode refs
CVE-2026-23018 btrfs: release path before initializing extent tree in btrfs_read_locked_inode()
CVE-2025-71186 dmaengine: stm32: dmamux: fix device leak on route allocation
CVE-2025-71185 dmaengine: ti: dma-crossbar: fix device leak on am335x route allocation
CVE-2026-23024 idpf: fix memory leak of flow steer list on rmmod
CVE-2026-23023 idpf: fix memory leak in idpf_vport_rel()
CVE-2026-23022 idpf: fix memory leak in idpf_vc_core_deinit()
CVE-2026-23021 net: usb: pegasus: fix memory leak in update_eth_regs_async()
CVE-2026-23020 net: 3com: 3c59x: fix possible null dereference in vortex_probe1()
CVE-2026-23019 net: marvell: prestera: fix NULL dereference on devlink_alloc() failure
CVE-2025-71187 dmaengine: sh: rz-dmac: fix device leak on probe failure
CVE-2026-23017 idpf: fix error handling in the init_task on load
CVE-2026-23016 inet: frags: drop fraglist conntrack references
CVE-2026-23015 gpio: mpsse: fix reference leak in gpio_mpsse_probe() error paths
CVE-2025-71184 btrfs: fix NULL dereference on root when tracing inode eviction
CVE-2025-71182 can: j1939: make j1939_session_activate() fail if device is no longer registered
CVE-2025-71181 rust_binder: remove spin_lock() in rust_shrink_free_page()
CVE-2025-71180 counter: interrupt-cnt: Drop IRQF_NO_THREAD flag
CVE-2026-23029 LoongArch: KVM: Fix kvm_device leak in kvm_eiointc_destroy()
CVE-2026-23039 drm/gud: fix NULL fb and crtc dereferences on USB disconnect

Showing top 20 of 37 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-23031

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