Bug 2535154 (CVE-2026-89886)

Summary: CVE-2026-89886 kernel: media: intel/ipu6: fix async notifier cleanup leak on parse error
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: 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   
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Doc Text:
A flaw was found in the Intel IPU6 media driver within the Linux kernel. This vulnerability occurs when the driver fails to properly clean up resources during an error in processing device connections. An attacker could potentially exploit this by triggering a specific error condition, leading to a resource leak. This continuous resource depletion could ultimately result in a Denial of Service (DoS), making the system unresponsive or unstable.
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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 2026-09-16 11:02:08 UTC 
In the Linux kernel, the following vulnerability has been resolved:

media: intel/ipu6: fix async notifier cleanup leak on parse error

isys_notifier_init() calls v4l2_async_nf_init() and then adds fwnode
remote subdevs in a loop with v4l2_async_nf_add_fwnode_remote(). If an
endpoint parse or add fails partway through the loop, it jumps to
err_parse and returns without calling v4l2_async_nf_cleanup(), leaking
every v4l2_async_connection already added to the notifier's waiting
list.

The register-failure path just below already cleans up correctly, and
the caller only tears the notifier down (isys_notifier_cleanup()) once
isys_notifier_init() has returned success. Clean up the notifier on the
parse error path too.
Comment 1 Mauro Matteo Cascella 2026-09-22 09:43:02 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89886.mbox