Bug 2555117 (CVE-2026-98774)

Summary: CVE-2026-98774 kernel: rust_binder: cancel deferred work items in thread exit
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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 Linux kernel's Rust Binder driver. When a thread terminates while handling an active outgoing transaction, deferred work items on the thread's task list are not properly cleaned up during thread release. A local attacker could exploit this vulnerability to cause a resource leak, potentially resulting in a denial of service (DoS).
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-10-18 15:55:25 UTC 
In the Linux kernel, the following vulnerability has been resolved:

rust_binder: cancel deferred work items in thread exit

If there are deferred work items on the thread todo list, then they are
not cleaned up in the Thread::release() method. Thus, update the code to
clean up the work items even if they are deferred.

This can happen if the thread dies while it has an active outgoing
transaction.
Comment 1 Mauro Matteo Cascella 2026-10-23 07:12:00 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98774.mbox