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EPSS 0.5%top 58%

Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: bpf: Reject fragmented frames in devmap Devmap broadcast redirects clone the… (CVE-2026-64355)

0
Low
Published: 07/25/2026 (07/25/2026, 10:17:00 UTC)
Source: GCVE Database
Product: linux-hwe-edge

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject fragmented frames in devmap Devmap broadcast redirects clone the packet for all but the last destination. For native XDP, that clone path copies only the linear xdp_frame data, while fragmented frames keep skb_shared_info in tailroom outside the linear area. Cloning such a frame leaves XDP_FLAGS_HAS_FRAGS set but without valid frag metadata, and the later free path can interpret uninitialized tail data as skb_shared_info, leading to an out-of-bounds access during frame return. Reject fragmented native XDP frames in dev_map_enqueue_clone(). Add the same restriction to the generic XDP clone path in dev_map_redirect_clone(). Generic XDP represents fragmented packets as nonlinear skbs, and rejecting them here keeps clone-based broadcast support aligned between native and generic XDP.

CVSS v3.1

Score 9.8critical

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Technical Details

Gcve Source
db.gcve.eu
Osv Id
GHSA-vvqh-m3wg-45w7
Osv Schema Version
1.4.0
Aliases
["CVE-2026-64355"]
Ecosystems
[]
Database Specific Severity
null
Cvss Version
null

Threat ID: 6a65420b9c2644c7f8084d3c

Added to database: 07/25/2026, 23:08:59 UTC

Last enriched: 08/15/2026, 02:57:58 UTC

Last updated: 09/07/2026, 10:52:10 UTC

Views: 72

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