VulnerabilityPublished 28 May 2026Updated 6 Nov 2026

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

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in f30ccfc2985590b33a23a3d8bed7ca16c0af551b : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:34 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in f30ccfc2985590b33a23a3d8bed7ca16c0af551b, f1b855c00988a9cb41134cab7cf9faedba775dd9, be2c1d825f54277472c87019e82013ac534ddc4c +12

Exploitation evidence

Disclosed: evidence found.
CVE published 28 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected >=5.10.253 <5.10.258 >=5.15.203 <5.15.209 >=6.1.168 <6.1.175 >=6.6.134 <6.6.140 >=6.12.81 <6.12.88 >=6.18.22 <6.18.30 >=6.19.12 <6.20	Fixed in f30ccfc2985590b33a23a3d8bed7ca16c0af551b f1b855c00988a9cb41134cab7cf9faedba775dd9 be2c1d825f54277472c87019e82013ac534ddc4c b0c0d44adb55c66663886cb6e30ee92cbb0f5385 7bd61ed0bf9f4f1f2673d489b3bda1555b48d054 6.20 6.18.30 6.12.88 6.6.140 6.1.175 5.15.209 5.10.258 2a71e01b2cf9b4329ff67102c1bea7448c2a2d2d 0c2c0c6820fe96fa4be0a0499f8d3f3321b9af6c 0b9fcab1b8608d429e5f239afb197de928d4de7d
LinuxLinux	Affected =7.0	Fixed in–

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.

References

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