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CVE-2026-23020— net: 3com: 3c59x: fix possible null dereference in vortex_probe1()

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，该漏洞源于未检查pdev指针，可能导致空指针取消引用。

AI Predicted 7.8 Difficulty: Easy EPSS 0.13% · P3

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 55c82617c3e82210b7471e9334e8fc5df6a9961f< 053ac9e37eee435e999277c0f1ef890dad6064bf affected
55c82617c3e82210b7471e9334e8fc5df6a9961f< 6cff14b831dbdb32675b4c7904dcc3eeeaf47e9d affected
55c82617c3e82210b7471e9334e8fc5df6a9961f< 606872c8e8bf96066730f6a2317502c5633c37f1 affected
55c82617c3e82210b7471e9334e8fc5df6a9961f< 28b2a805609699be7b90020ae7dccfb234be1ceb affected
55c82617c3e82210b7471e9334e8fc5df6a9961f< 2f05f7737e16d9a40038cc1c38a96a3f7964898b affected
55c82617c3e82210b7471e9334e8fc5df6a9961f< d82796a57cc0dac1dbef19d913c8f02a8cc7b1a7 affected
55c82617c3e82210b7471e9334e8fc5df6a9961f< a4e305ed60f7c41bbf9aabc16dd75267194e0de3 affected
d30fdc02c49ad9965bba25015ae66c22dae967d1 affected
… +10 more rows
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I. Basic Information for CVE-2026-23020

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
net: 3com: 3c59x: fix possible null dereference in vortex_probe1()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: 3com: 3c59x: fix possible null dereference in vortex_probe1() pdev can be null and free_ring: can be called in 1297 with a null pdev.
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，该漏洞源于未检查pdev指针，可能导致空指针取消引用。
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 55c82617c3e82210b7471e9334e8fc5df6a9961f ~ 053ac9e37eee435e999277c0f1ef890dad6064bf -
Linux Linux 4.17 -

II. Public POCs for CVE-2026-23020

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III. Intelligence Information for CVE-2026-23020

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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-2025-71187 dmaengine: sh: rz-dmac: fix device leak on probe failure
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-2026-23019 net: marvell: prestera: fix NULL dereference on devlink_alloc() failure
CVE-2025-71189 dmaengine: dw: dmamux: fix OF node leak on route allocation 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-2026-23031 can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak
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-2026-23020

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