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7.1
HIGH CVSS 3.1
CVE-2026-53255
Bluetooth: MGMT: validate advertising TLV before type checks
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: validate advertising TLV before type checks tlv_data_is_valid() reads each advertising data field length from data[i], then inspects data[i + 1] for managed EIR types before checking that the current field still fits inside the supplied buffer. A malformed field whose length byte is the last byte of the buffer can therefore make the parser read one byte past the advertising data. KASAN reported the following when a malformed MGMT_OP_ADD_ADVERTISING request reached that path: BUG: KASAN: vmalloc-out-of-bounds in tlv_data_is_valid() Read of size 1 Call trace: tlv_data_is_valid() add_advertising() hci_mgmt_cmd() hci_sock_sendmsg() Move the existing element-length check before any type-octet inspection so each non-empty element is proven to contain its type byte before the parser looks at data[i + 1].

Details
INFO

Published Date :

June 25, 2026, 9:16 a.m.

Last Modified :

July 8, 2026, 4:44 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-53255 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH [email protected]
Solution
Address memory corruption by validating advertising data length before type inspection.
  • Validate advertising data length before inspecting type.
  • Ensure field length checks precede type-octet inspection.
  • Apply the resolved Linux kernel patch.
  • Update the Linux kernel to the latest version.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-53255.

URL Resource
https://git.kernel.org/stable/c/06fcbd79c3c360a50f9be9d370769bbd738d0976 Patch
https://git.kernel.org/stable/c/13ad995071a06570668dd8daab3616c247c72080 Patch
https://git.kernel.org/stable/c/18fea1cb0c2599752e908c8217490f73ddd33e00 Patch
https://git.kernel.org/stable/c/1a3c8ffbb469859b076445af44bdfa6a711d483e Patch
https://git.kernel.org/stable/c/2a3f3ed9e198ae23c15859ace2f9ca6cfdc35b57 Patch
https://git.kernel.org/stable/c/74c08e4db35a476c3462aeb65846f955be732626 Patch
https://git.kernel.org/stable/c/de23fb62259aa01d294f77238ae3b835eb674413 Patch
https://git.kernel.org/stable/c/f7093ac233c1e7f51d125534f46067772a113175 Patch
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-53255 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-2026-53255 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).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-53255 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-53255 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.

  • Initial Analysis by [email protected]

    Jul. 08, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
    Added CWE CWE-125
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.176 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.143 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.210 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.36 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.94 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.13 *cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.9 up to (excluding) 5.10.259
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/06fcbd79c3c360a50f9be9d370769bbd738d0976 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/13ad995071a06570668dd8daab3616c247c72080 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/18fea1cb0c2599752e908c8217490f73ddd33e00 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/1a3c8ffbb469859b076445af44bdfa6a711d483e Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/2a3f3ed9e198ae23c15859ace2f9ca6cfdc35b57 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/74c08e4db35a476c3462aeb65846f955be732626 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/de23fb62259aa01d294f77238ae3b835eb674413 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/f7093ac233c1e7f51d125534f46067772a113175 Types: Patch
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Jun. 25, 2026

    Action Type Old Value New Value
    Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2bb36870e8cb29949ef9acec37129cd8e70f1857', 'lessThan': '13ad995071a06570668dd8daab3616c247c72080', 'versionType': 'git'}, {'status': 'affected', 'version': '2bb36870e8cb29949ef9acec37129cd8e70f1857', 'lessThan': '06fcbd79c3c360a50f9be9d370769bbd738d0976', 'versionType': 'git'}, {'status': 'affected', 'version': '2bb36870e8cb29949ef9acec37129cd8e70f1857', 'lessThan': 'f7093ac233c1e7f51d125534f46067772a113175', 'versionType': 'git'}, {'status': 'affected', 'version': '2bb36870e8cb29949ef9acec37129cd8e70f1857', 'lessThan': '74c08e4db35a476c3462aeb65846f955be732626', 'versionType': 'git'}, {'status': 'affected', 'version': '2bb36870e8cb29949ef9acec37129cd8e70f1857', 'lessThan': '18fea1cb0c2599752e908c8217490f73ddd33e00', 'versionType': 'git'}, {'status': 'affected', 'version': '2bb36870e8cb29949ef9acec37129cd8e70f1857', 'lessThan': '1a3c8ffbb469859b076445af44bdfa6a711d483e', 'versionType': 'git'}, {'status': 'affected', 'version': '2bb36870e8cb29949ef9acec37129cd8e70f1857', 'lessThan': '2a3f3ed9e198ae23c15859ace2f9ca6cfdc35b57', 'versionType': 'git'}, {'status': 'affected', 'version': '2bb36870e8cb29949ef9acec37129cd8e70f1857', 'lessThan': 'de23fb62259aa01d294f77238ae3b835eb674413', 'versionType': 'git'}], 'programFiles': ['net/bluetooth/mgmt.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.9'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.9', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.259', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.210', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.176', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.143', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.94', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.36', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.13', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/bluetooth/mgmt.c'], 'defaultStatus': 'affected'}]
    Added Description In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: validate advertising TLV before type checks tlv_data_is_valid() reads each advertising data field length from data[i], then inspects data[i + 1] for managed EIR types before checking that the current field still fits inside the supplied buffer. A malformed field whose length byte is the last byte of the buffer can therefore make the parser read one byte past the advertising data. KASAN reported the following when a malformed MGMT_OP_ADD_ADVERTISING request reached that path: BUG: KASAN: vmalloc-out-of-bounds in tlv_data_is_valid() Read of size 1 Call trace: tlv_data_is_valid() add_advertising() hci_mgmt_cmd() hci_sock_sendmsg() Move the existing element-length check before any type-octet inspection so each non-empty element is proven to contain its type byte before the parser looks at data[i + 1].
    Added Reference https://git.kernel.org/stable/c/06fcbd79c3c360a50f9be9d370769bbd738d0976
    Added Reference https://git.kernel.org/stable/c/13ad995071a06570668dd8daab3616c247c72080
    Added Reference https://git.kernel.org/stable/c/18fea1cb0c2599752e908c8217490f73ddd33e00
    Added Reference https://git.kernel.org/stable/c/1a3c8ffbb469859b076445af44bdfa6a711d483e
    Added Reference https://git.kernel.org/stable/c/2a3f3ed9e198ae23c15859ace2f9ca6cfdc35b57
    Added Reference https://git.kernel.org/stable/c/74c08e4db35a476c3462aeb65846f955be732626
    Added Reference https://git.kernel.org/stable/c/de23fb62259aa01d294f77238ae3b835eb674413
    Added Reference https://git.kernel.org/stable/c/f7093ac233c1e7f51d125534f46067772a113175
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 7.1
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact