Bug 2555027 (CVE-2026-98602) - CVE-2026-98602 kernel: Bluetooth: bnep: fix out-of-bounds reads on short RX/TX frames and control fallthrough
Summary: CVE-2026-98602 kernel: Bluetooth: bnep: fix out-of-bounds reads on short RX/T...
Keywords:
Status: NEW
Alias: CVE-2026-98602
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-18 15:40 UTC by OSIDB Bzimport
Modified: 2026-10-20 15:51 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-10-18 15:40:07 UTC
In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: bnep: fix out-of-bounds reads on short RX/TX frames and control fallthrough

Fix multiple out-of-bounds reads in Bluetooth BNEP frame processing:

1. In bnep_rx_frame() and bnep_ctrl_frame() (net/bluetooth/bnep/core.c),
   use pskb_may_pull() to verify the BNEP header, control type byte,
   filter count, and extension headers exist before reading them, and
   return 0 after handling BNEP_CONTROL instead of falling through to
   Ethernet frame submission when no extension headers follow.
2. In bnep_net_xmit() (net/bluetooth/bnep/netdev.c), verify skb->len >=
   ETH_HLEN with pskb_may_pull() before reading the 14-byte Ethernet
   header to prevent an out-of-bounds heap read and infoleak on short
   AF_PACKET TX frames.


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