Bug 2429045 (CVE-2025-71075)

Summary:	CVE-2025-71075 kernel: scsi: aic94xx: fix use-after-free in device removal path
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A use-after-free flaw was found in the Linux kernel's AIC-94xx SAS/SATA controller driver. The asd_pci_remove() function frees the asd_ha structure without first synchronizing pending tasklets. If a tasklet is scheduled but not yet executed when the structure is freed, the tasklet will access freed memory, causing a kernel crash or corruption.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
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Description OSIDB Bzimport 2026-01-13 16:02:52 UTC

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

scsi: aic94xx: fix use-after-free in device removal path

The asd_pci_remove() function fails to synchronize with pending tasklets
before freeing the asd_ha structure, leading to a potential
use-after-free vulnerability.

When a device removal is triggered (via hot-unplug or module unload),
race condition can occur.

The fix adds tasklet_kill() before freeing the asd_ha structure,
ensuring all scheduled tasklets complete before cleanup proceeds.

Comment 1 Jon Moroney 2026-01-15 03:42:43 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026011326-CVE-2025-71075-c85d@gregkh/T