CVE-2026-53253

Memory disclosure and crash via short BNEP frames

Published Jun 25, 2026 · Updated Jun 25, 2026

Out-of-bounds read in Linux Kernel BNEP parsing allows attackers to disclose kernel memory or crash the system via a short BNEP SDU. bnep_rx_frame() reads the packet type, control opcode, and setup UUID-size byte before confirming that each byte exists; bnep_rx_control() likewise dereferences an empty control payload. Reachability requires an unauthenticated, adjacent Bluetooth peer to deliver a truncated BNEP frame, with consequences bounded to memory disclosure or service interruption.

CVSS severity7.1
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Linux Kernel BNEP parsing allows attackers to disclose kernel memory or crash the system via a short BNEP SDU. bnep_rx_frame() reads the packet type, control opcode, and setup UUID-size byte before confirming that each byte exists; bnep_rx_control() likewise dereferences an empty control payload. Reachability requires an unauthenticated, adjacent Bluetooth peer to deliver a truncated BNEP frame, with consequences bounded to memory disclosure or service interruption.

The record

CVE
CVE-2026-53253
Published
Jun 25, 2026
Updated
Jun 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-125, T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0ef2ea86c82b2615902d085cd5a586fe9f58994f
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2b83afb19293e4de700edae306115f18966dc4f9
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6770d3a8acdf9151769180cc3710346c4cfbe6f0
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <691f14b6a48b637655755134f1e551c7c6fedc2e
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <be837cd09897e9e6e1958174501d467bdcbcc2bc
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c893e17d2809ec9c4b3f1cdd5847cecbc27a311b
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d76dec1a37122bc16d83d059c08c0512ea8de909
  8. Affected versionversion=2.6.12

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0ef2ea86c82b2615902d085cd5a586fe9f58994f; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2b83afb19293e4de700edae306115f18966dc4f9; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6770d3a8acdf9151769180cc3710346c4cfbe6f0; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <691f14b6a48b637655755134f1e551c7c6fedc2e; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <be837cd09897e9e6e1958174501d467bdcbcc2bc; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c893e17d2809ec9c4b3f1cdd5847cecbc27a311b; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d76dec1a37122bc16d83d059c08c0512ea8de909; version=2.6.12

Published CVSS scores

7.1kernel.orgCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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