CVE-2026-72115

Receive-state corruption via cross-interface timer race

Published Aug 15, 2026 · Updated Aug 15, 2026

A race condition in Linux kernel CAN BCM allows attackers to corrupt receive-operation state via concurrent traffic from several CAN interfaces. The bcm_rx_handler function races timer cancellation or restart against bcm_rx_timeout_handler because ANYDEV operations share rx_ifindex, rx_stamp, and last_frames across interfaces. The condition requires an ANYDEV receive operation with a timeout or throttle timer and matching frames on several interfaces; consequences are spurious timeout notifications and corrupted frame state.

CVSS severity8.1
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

A race condition in Linux kernel CAN BCM allows attackers to corrupt receive-operation state via concurrent traffic from several CAN interfaces. The bcm_rx_handler function races timer cancellation or restart against bcm_rx_timeout_handler because ANYDEV operations share rx_ifindex, rx_stamp, and last_frames across interfaces. The condition requires an ANYDEV receive operation with a timeout or throttle timer and matching frames on several interfaces; consequences are spurious timeout notifications and corrupted frame state.

The record

CVE
CVE-2026-72115
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=2.6.25
  2. Affected versionversion=ffd980f976e7fd666c2e61bf8ab35107efd11828 <18b45251e74e35668f0dd0c470549384ae191ecf
  3. Affected versionversion=ffd980f976e7fd666c2e61bf8ab35107efd11828 <2f5976f54a04e9f18b25283036ac3136be453b17
  4. Affected versionversion=ffd980f976e7fd666c2e61bf8ab35107efd11828 <3ff8c24b421070a2db99a5cdb86edc9ff339418e
  5. Affected versionversion=ffd980f976e7fd666c2e61bf8ab35107efd11828 <b6317022b685a430a3ae420456716e3c0c02ef4b
  6. Affected versionversion=ffd980f976e7fd666c2e61bf8ab35107efd11828 <eca8b44d51fc6ab61022258ec968e55e3073b79e

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.25; version=ffd980f976e7fd666c2e61bf8ab35107efd11828 <18b45251e74e35668f0dd0c470549384ae191ecf; version=ffd980f976e7fd666c2e61bf8ab35107efd11828 <2f5976f54a04e9f18b25283036ac3136be453b17; version=ffd980f976e7fd666c2e61bf8ab35107efd11828 <3ff8c24b421070a2db99a5cdb86edc9ff339418e; version=ffd980f976e7fd666c2e61bf8ab35107efd11828 <b6317022b685a430a3ae420456716e3c0c02ef4b; version=ffd980f976e7fd666c2e61bf8ab35107efd11828 <eca8b44d51fc6ab61022258ec968e55e3073b79e

Published CVSS scores

8.1UbuntuCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
3.6Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo