Bug 2536204 (CVE-2026-93102)

Summary:	CVE-2026-93102 kernel: RDMA/hfi1: Free RX data on late probe failure
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the Linux kernel's RDMA/hfi1 driver. During a late probe failure, the `hfi1_init_dd()` function allocates shared RX support, but if subsequent initialization or device registration fails, the allocated memory is not properly freed. This oversight can lead to a memory leak, potentially impacting system stability or resource availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-09-17 16:50:38 UTC

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

RDMA/hfi1: Free RX data on late probe failure

hfi1_init_dd() allocates the shared AIP/VNIC RX support before returning.
If hfi1_init() or hfi1_register_ib_device() later fails, init_one() tears
down the device data without calling hfi1_free_rx(). This leaks netdev_rx
and its dummy netdev.

Free the RX support after IB unregistration and before postinit_cleanup(),
as done on normal device removal.

Comment 1 gkamathe 2026-09-19 14:57:32 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93102.mbox