Bug 2540523 (CVE-2026-97517)

Summary: CVE-2026-97517 kernel: wifi: nl80211: reject beacons with bad HE operation
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
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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A flaw was found in the Linux kernel's nl80211 wireless configuration interface. This flaw can lead to a Denial of Service (DoS) caused by an out-of-bounds memory read when processing wireless beacon settings. The kernel fails to validate that the variable-length portion of a High Efficiency (HE) operation element is within expected bounds. A local user can exploit this vulnerability by submitting a malformed beacon configuration to crash the operating system.
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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 2026-09-24 17:06:36 UTC
In the Linux kernel, the following vulnerability has been resolved:

wifi: nl80211: reject beacons with bad HE operation

The HE operation element not only needs to be longer than
the fixed part, but also have an appropriate size for the
variable part inside of it. Check this.