CVE-2026-98602
Bluetooth: bnep: fix out-of-bounds reads on short RX/TX frames and control fallthrough
Description
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.
INFO
Published Date :
Oct. 18, 2026, 4:17 p.m.
Last Modified :
Oct. 18, 2026, 4:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update Linux kernel to the latest stable version.
- Apply the specific patch for Bluetooth BNEP vulnerability.
- Verify header and length checks in frame processing.
- Ensure proper handling of control frames and extensions.
References to Advisories, Solutions, and Tools
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information, practical solutions, and valuable tools related to
CVE-2026-98602.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-98602 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-98602
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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CVE-2026-98602 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-98602 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 18, 2026
Action Type Old Value New Value Added Description 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. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/98xxx/CVE-2026-98602.json">CVE-2026-98602</a> Added Reference https://git.kernel.org/stable/c/035f9b1809861967e58ce652680d70ea1502058f Added Reference https://git.kernel.org/stable/c/1e7aebc188f889b56c3aaeb6133ef6d77022c887 Added Reference https://git.kernel.org/stable/c/3e605ff5932afe0970c2beca66f2f1ba2babe4dd Added Reference https://git.kernel.org/stable/c/667aa703e11cdc237d169393bc6a5ea9acbb33c2 Added Reference https://git.kernel.org/stable/c/7af80ad2cebfe2f1879d6a39a1aaa061d9c4e1ca Added Reference https://git.kernel.org/stable/c/8f31031326994d1abfcc6ebb6927ef96e51fb9ff Added Reference https://git.kernel.org/stable/c/ad0d2d4ada51321db787262ef343193c712b76b5 Added Reference https://git.kernel.org/stable/c/f0ca020cbb9bb7f3f4ea8ba1dfcf30a282aec91e