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CVE-2026-46109— usb: ulpi: fix memory leak on ulpi_register() error paths

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:ulpi在ulpi_register()错误路径上存在内存泄漏。

AI Predicted 5.3 Difficulty: Trivial EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1001 · Data Obfuscation

Affected Version Matrix 26

VendorProduct Version RangeStatus
Linux Linux 2f70ba9dae13a190673cc3f9b4aad52179738f60< 0c2c0c6820fe96fa4be0a0499f8d3f3321b9af6c affected
ee248e6e941e4f2e634df2bd43e5f1ef810ab6df< f1b855c00988a9cb41134cab7cf9faedba775dd9 affected
272a9b26c336a295e4e209157fed809706c1b1f7< 7bd61ed0bf9f4f1f2673d489b3bda1555b48d054 affected
aaeae6533d77e6ed4def85baec01e2815ebbef61< b0c0d44adb55c66663886cb6e30ee92cbb0f5385 affected
8763f8317bb389aded32a32b08f6751cfff657d2< be2c1d825f54277472c87019e82013ac534ddc4c affected
38c28fe25611099230f0965c925499bfcf46a795< 2a71e01b2cf9b4329ff67102c1bea7448c2a2d2d affected
01af542392b5d41fd659d487015a71f627accce3< f30ccfc2985590b33a23a3d8bed7ca16c0af551b affected
01af542392b5d41fd659d487015a71f627accce3< 0b9fcab1b8608d429e5f239afb197de928d4de7d affected
… +18 more rows
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I. Basic Information for CVE-2026-46109

Vulnerability Information
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Vulnerability Title
usb: ulpi: fix memory leak on ulpi_register() error paths
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: usb: ulpi: fix memory leak on ulpi_register() error paths Commit 01af542392b5 ("usb: ulpi: fix double free in ulpi_register_interface() error path") removed kfree(ulpi) from ulpi_register_interface() to fix a double-free when device_register() fails. But when ulpi_of_register() or ulpi_read_id() fail before device_register() is called, the ulpi allocation is leaked. Add kfree(ulpi) on both error paths to properly clean up the allocation.
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:ulpi在ulpi_register()错误路径上存在内存泄漏。
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 2f70ba9dae13a190673cc3f9b4aad52179738f60 ~ 0c2c0c6820fe96fa4be0a0499f8d3f3321b9af6c -
Linux Linux 7.0 -

II. Public POCs for CVE-2026-46109

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III. Intelligence Information for CVE-2026-46109

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Patches & Fixes for CVE-2026-46109 (8)

Same Patch Batch · Linux · 2026-05-28 · 135 CVEs total

CVE-2026-46195 9.8 CRITICAL smb: client: validate dacloffset before building DACL pointers
CVE-2026-46137 9.8 CRITICAL mptcp: pm: ADD_ADDR rtx: fix potential data-race
CVE-2026-46115 9.8 CRITICAL block: add pgmap check to biovec_phys_mergeable
CVE-2026-46135 9.8 CRITICAL nvmet-tcp: fix race between ICReq handling and queue teardown
CVE-2026-46155 9.1 CRITICAL smb/client: fix out-of-bounds read in smb2_compound_op()
CVE-2026-46185 9.1 CRITICAL smb/client: fix out-of-bounds read in symlink_data()
CVE-2026-46119 9.1 CRITICAL libceph: Fix slab-out-of-bounds access in auth message processing
CVE-2026-46152 8.8 HIGH wifi: mac80211: drop stray 'static' from fast-RX rx_result
CVE-2026-46212 8.8 HIGH batman-adv: bla: prevent use-after-free when deleting claims
CVE-2026-46166 8.8 HIGH wifi: mac80211: use safe list iteration in radar detect work
CVE-2026-46174 8.8 HIGH x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache
CVE-2026-46113 8.8 HIGH KVM: x86: Fix shadow paging use-after-free due to unexpected GFN
CVE-2026-46198 8.8 HIGH batman-adv: fix integer overflow on buff_pos
CVE-2026-46125 8.8 HIGH wifi: mac80211: remove station if connection prep fails
CVE-2026-46238 8.8 HIGH batman-adv: stop caching unowned originator pointers in BAT IV
CVE-2026-46232 8.1 HIGH HID: playstation: Clamp num_touch_reports
CVE-2026-46138 8.1 HIGH Bluetooth: hci_event: Fix OOB read and infinite loop in hci_le_create_big_complete_evt
CVE-2026-46145 7.8 HIGH RDMA/mana: Validate rx_hash_key_len
CVE-2026-46205 7.8 HIGH staging: media: atomisp: Disallow all private IOCTLs
CVE-2026-46173 7.8 HIGH exit: prevent preemption of oopsing TASK_DEAD task

Showing top 20 of 135 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46109

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