Bug 2451214 (CVE-2026-23324)

Summary:	CVE-2026-23324 kernel: can: usb: etas_es58x: correctly anchor the urb in the read bulk callback
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	unspecified	Keywords:	Security
Target Milestone:	---
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Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in the Linux kernel's etas_es58x USB CAN bus driver. The driver fails to correctly anchor the USB Request Block (urb) in the read bulk callback. This oversight can lead to a memory leak if usb_kill_anchored_urbs() is called without the urb being properly anchored. The continuous leakage of memory could result in system instability or a Denial of Service (DoS).	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-03-25 11:05:08 UTC

In the Linux kernel, the following vulnerability has been resolved:

can: usb: etas_es58x: correctly anchor the urb in the read bulk callback

When submitting an urb, that is using the anchor pattern, it needs to be
anchored before submitting it otherwise it could be leaked if
usb_kill_anchored_urbs() is called.  This logic is correctly done
elsewhere in the driver, except in the read bulk callback so do that
here also.

Comment 1 Alexander B 2026-03-25 15:30:55 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026032531-CVE-2026-23324-bc9e@gregkh/T