Bug 2482110 (CVE-2026-46000)

Summary: CVE-2026-46000 kernel: rxrpc: Fix conn-level packet handling to unshare RESPONSE packets
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: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in the Linux kernel's rxrpc component. Security operations that decrypt RESPONSE packets in place may share the socket buffer (`sk_buff`) with a packet sniffer. This could allow a local attacker or an attacker with network access to intercept and view decrypted portions of these packets, leading to information disclosure.
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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 2026-05-27 15:11:48 UTC 
In the Linux kernel, the following vulnerability has been resolved:

rxrpc: Fix conn-level packet handling to unshare RESPONSE packets

The security operations that verify the RESPONSE packets decrypt bits of it
in place - however, the sk_buff may be shared with a packet sniffer, which
would lead to the sniffer seeing an apparently corrupt packet (actually
decrypted).

Fix this by handing a copy of the packet off to the specific security
handler if the packet was cloned.
Comment 1 Keith Grant 2026-05-27 21:22:02 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026052742-CVE-2026-46000-b884@gregkh/T