Bug 2482117 (CVE-2026-46102)

Summary: CVE-2026-46102 kernel: net: strparser: fix skb_head leak in strp_abort_strp()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
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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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A flaw was found in the Linux kernel's network stream parser. This vulnerability occurs when the stream parser is unexpectedly stopped, such as during a message assembly timeout. A partially processed network message is not properly released from memory, leading to a memory leak. An attacker could repeatedly trigger this issue, causing the system to run out of memory and become unresponsive, resulting in a denial of service (DoS).
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Description OSIDB Bzimport 2026-05-27 15:12:08 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net: strparser: fix skb_head leak in strp_abort_strp()

When the stream parser is aborted, for example after a message assembly timeout,
it can still hold a reference to a partially assembled message in
strp->skb_head.

That skb is not released in strp_abort_strp(), which leaks the partially
assembled message and can be triggered repeatedly to exhaust memory.

Fix this by freeing strp->skb_head and resetting the parser state in the
abort path. Leave strp_stop() unchanged so final cleanup still happens in
strp_done() after the work and timer have been synchronized.
Comment 1 Keith Grant 2026-05-27 16:38:49 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026052705-CVE-2026-46102-651a@gregkh/T