CVE-2026-72114
can: bcm: validate frame length in bcm_rx_setup() for RTR replies
Description
In the Linux kernel, the following vulnerability has been resolved: can: bcm: validate frame length in bcm_rx_setup() for RTR replies bcm_tx_setup() validates cf->len against the CAN/CAN FD DLC limits before installing frames for TX_SETUP, but bcm_rx_setup() never did the same for the RTR-reply frame configured via RX_SETUP with RX_RTR_FRAME.
INFO
Published Date :
Aug. 15, 2026, 6:21 a.m.
Last Modified :
Aug. 17, 2026, 6:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel to a patched version.
- Ensure bcm_rx_setup() validates frame length.
- Validate CAN/CAN FD DLC limits for RTR replies.
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-2026-72114.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72114 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-2026-72114
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-2026-72114 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72114 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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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': '7d966cdee006911d3957e1a4e72cb93c39cd8c1e', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': '1b475c0c72f44622a320a4386ce9e76f85e69bc7', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': 'deb6a697cce3f021e731df543597f37a5e54caab', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': '59bfddea64159594feb62ef11b7d7a33c8ee3783', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': '62ec41f364648be79d54d94d0d240ee326948afd', 'versionType': 'git'}], 'programFiles': ['net/can/bcm.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.25'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.25', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/can/bcm.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': '7d966cdee006911d3957e1a4e72cb93c39cd8c1e', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': '1b475c0c72f44622a320a4386ce9e76f85e69bc7', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': 'deb6a697cce3f021e731df543597f37a5e54caab', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': '59bfddea64159594feb62ef11b7d7a33c8ee3783', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': '62ec41f364648be79d54d94d0d240ee326948afd', 'versionType': 'git'}], 'programFiles': ['net/can/bcm.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.25'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.25', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/can/bcm.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 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': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': '7d966cdee006911d3957e1a4e72cb93c39cd8c1e', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': '1b475c0c72f44622a320a4386ce9e76f85e69bc7', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': 'deb6a697cce3f021e731df543597f37a5e54caab', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': '59bfddea64159594feb62ef11b7d7a33c8ee3783', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': '62ec41f364648be79d54d94d0d240ee326948afd', 'versionType': 'git'}], 'programFiles': ['net/can/bcm.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.25'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.25', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/can/bcm.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: can: bcm: validate frame length in bcm_rx_setup() for RTR replies bcm_tx_setup() validates cf->len against the CAN/CAN FD DLC limits before installing frames for TX_SETUP, but bcm_rx_setup() never did the same for the RTR-reply frame configured via RX_SETUP with RX_RTR_FRAME. Added Reference https://git.kernel.org/stable/c/1b475c0c72f44622a320a4386ce9e76f85e69bc7 Added Reference https://git.kernel.org/stable/c/59bfddea64159594feb62ef11b7d7a33c8ee3783 Added Reference https://git.kernel.org/stable/c/62ec41f364648be79d54d94d0d240ee326948afd Added Reference https://git.kernel.org/stable/c/7d966cdee006911d3957e1a4e72cb93c39cd8c1e Added Reference https://git.kernel.org/stable/c/deb6a697cce3f021e731df543597f37a5e54caab