1. Home
  2. Vulnerabilities
  3. CVE-2026-72115
8.1
HIGH CVSS 3.1
CVE-2026-72115
can: bcm: track a single source interface for ANYDEV timeout/throttle ops
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: can: bcm: track a single source interface for ANYDEV timeout/throttle ops An ANYDEV rx op (ifindex == 0) with an active RX timeout and/or throttle timer has no defined semantics when matching frames arrive from several interfaces: bcm_rx_handler() can run concurrently for the same op on different CPUs, racing hrtimer_cancel()/ bcm_rx_starttimer() against bcm_rx_timeout_handler() and causing spurious RX_TIMEOUT notifications and last_frames corruption. The same concurrency lets throttled multiplex frames from different interfaces clobber the single rx_ifindex/rx_stamp fields shared by the op. Add op->if_detected to track the first interface that delivers a matching frame while a timeout/throttle timer is configured, and reject frames from any other interface for that op. The claim is decided in bcm_rx_handler() before hrtimer_cancel() touches op->timer, so a rejected frame can never disturb the claimed interface's watchdog. RTR-mode ops are excluded via RX_RTR_FRAME, independent of kt_ival1/kt_ival2, since those may briefly hold a stale value from an earlier non-RTR configuration. The claim is released in bcm_notify() on NETDEV_UNREGISTER and in bcm_rx_setup() when SETTIMER reconfigures the timer values. A (re-)claim is only possible on CAN devices in NETREG_REGISTERED dev->reg_state to cover the release in bcm_notify() where reg_state becomes NETREG_UNREGISTERING until synchronize_net().

Details
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
Impact
Affected Products

The following products are affected by CVE-2026-72115 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 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
Update the Linux kernel to resolve race conditions in the CAN bus driver related to ANYDEV operations.
  • Update the Linux kernel to the latest stable version.
  • Apply the specific patch addressing the bcm: track source interface issue.
  • Rebuild and install the updated kernel.
  • Reboot the system to load the new kernel.
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-2026-72115.

URL Resource
https://git.kernel.org/stable/c/18b45251e74e35668f0dd0c470549384ae191ecf
https://git.kernel.org/stable/c/2f5976f54a04e9f18b25283036ac3136be453b17
https://git.kernel.org/stable/c/3ff8c24b421070a2db99a5cdb86edc9ff339418e
https://git.kernel.org/stable/c/b6317022b685a430a3ae420456716e3c0c02ef4b
https://git.kernel.org/stable/c/eca8b44d51fc6ab61022258ec968e55e3073b79e
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-72115 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-2026-72115 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-2026-72115 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-2026-72115 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.

  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 17, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
    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': '18b45251e74e35668f0dd0c470549384ae191ecf', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': '3ff8c24b421070a2db99a5cdb86edc9ff339418e', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': 'eca8b44d51fc6ab61022258ec968e55e3073b79e', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': 'b6317022b685a430a3ae420456716e3c0c02ef4b', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': '2f5976f54a04e9f18b25283036ac3136be453b17', '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': '18b45251e74e35668f0dd0c470549384ae191ecf', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': '3ff8c24b421070a2db99a5cdb86edc9ff339418e', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': 'eca8b44d51fc6ab61022258ec968e55e3073b79e', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': 'b6317022b685a430a3ae420456716e3c0c02ef4b', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': '2f5976f54a04e9f18b25283036ac3136be453b17', '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': '18b45251e74e35668f0dd0c470549384ae191ecf', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': '3ff8c24b421070a2db99a5cdb86edc9ff339418e', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': 'eca8b44d51fc6ab61022258ec968e55e3073b79e', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': 'b6317022b685a430a3ae420456716e3c0c02ef4b', 'versionType': 'git'}, {'status': 'affected', 'version': 'ffd980f976e7fd666c2e61bf8ab35107efd11828', 'lessThan': '2f5976f54a04e9f18b25283036ac3136be453b17', '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: track a single source interface for ANYDEV timeout/throttle ops An ANYDEV rx op (ifindex == 0) with an active RX timeout and/or throttle timer has no defined semantics when matching frames arrive from several interfaces: bcm_rx_handler() can run concurrently for the same op on different CPUs, racing hrtimer_cancel()/ bcm_rx_starttimer() against bcm_rx_timeout_handler() and causing spurious RX_TIMEOUT notifications and last_frames corruption. The same concurrency lets throttled multiplex frames from different interfaces clobber the single rx_ifindex/rx_stamp fields shared by the op. Add op->if_detected to track the first interface that delivers a matching frame while a timeout/throttle timer is configured, and reject frames from any other interface for that op. The claim is decided in bcm_rx_handler() before hrtimer_cancel() touches op->timer, so a rejected frame can never disturb the claimed interface's watchdog. RTR-mode ops are excluded via RX_RTR_FRAME, independent of kt_ival1/kt_ival2, since those may briefly hold a stale value from an earlier non-RTR configuration. The claim is released in bcm_notify() on NETDEV_UNREGISTER and in bcm_rx_setup() when SETTIMER reconfigures the timer values. A (re-)claim is only possible on CAN devices in NETREG_REGISTERED dev->reg_state to cover the release in bcm_notify() where reg_state becomes NETREG_UNREGISTERING until synchronize_net().
    Added Reference https://git.kernel.org/stable/c/18b45251e74e35668f0dd0c470549384ae191ecf
    Added Reference https://git.kernel.org/stable/c/2f5976f54a04e9f18b25283036ac3136be453b17
    Added Reference https://git.kernel.org/stable/c/3ff8c24b421070a2db99a5cdb86edc9ff339418e
    Added Reference https://git.kernel.org/stable/c/b6317022b685a430a3ae420456716e3c0c02ef4b
    Added Reference https://git.kernel.org/stable/c/eca8b44d51fc6ab61022258ec968e55e3073b79e
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: 8.1
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact