2406777 – (CVE-2025-40062) CVE-2025-40062 kernel: crypto: hisilicon/qm - set NULL to qm->debug.qm_diff_regs

Bug 2406777 (CVE-2025-40062) - CVE-2025-40062 kernel: crypto: hisilicon/qm - set NULL to qm->debug.qm_diff_regs

Summary: CVE-2025-40062 kernel: crypto: hisilicon/qm - set NULL to qm->debug.qm_diff_regs

Keywords:
Status:	NEW
Alias:	CVE-2025-40062
Product:	Security Response
Classification:	Other
Component:	vulnerability
Sub Component:
Version:	unspecified
Hardware:	All
OS:	Linux
Priority:	unspecified
Severity:	unspecified
Target Milestone:	---
Assignee:	Product Security DevOps Team
QA Contact:
Docs Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+	depends on / blocked

Reported:	2025-10-28 12:04 UTC by OSIDB Bzimport
Modified:	2026-06-29 16:16 UTC (History)
CC List:	2 users (show)
Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments	(Terms of Use)

Description OSIDB Bzimport 2025-10-28 12:04:59 UTC

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

crypto: hisilicon/qm - set NULL to qm->debug.qm_diff_regs

When the initialization of qm->debug.acc_diff_reg fails,
the probe process does not exit. However, after qm->debug.qm_diff_regs is
freed, it is not set to NULL. This can lead to a double free when the
remove process attempts to free it again. Therefore, qm->debug.qm_diff_regs
should be set to NULL after it is freed.

Comment 1 Jon Moroney 2025-10-28 20:31:10 UTC Comment hidden (spam)

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