What’s Vulnerable › Vulnerabilities

CVE-2026-72114: can: bcm: validate frame length in bcm_rx_setup() for RTR replies

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-15 · updated 2026-10-16

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.

Affected products

• Linux kernel: 2.6.25 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1b475c0c72f44622a320a4386ce9e76f85e69bc7
• https://git.kernel.org/stable/c/204f2b232717bc470ddb9e1da1d27dd9c6ef0caa
• https://git.kernel.org/stable/c/59bfddea64159594feb62ef11b7d7a33c8ee3783
• https://git.kernel.org/stable/c/62ec41f364648be79d54d94d0d240ee326948afd
• https://git.kernel.org/stable/c/7d966cdee006911d3957e1a4e72cb93c39cd8c1e
• https://git.kernel.org/stable/c/cc1f9569f1c1adf74fa69d6f716a31b58a2fc6ce
• https://git.kernel.org/stable/c/deb6a697cce3f021e731df543597f37a5e54caab
• https://git.kernel.org/stable/c/e061624c0a86c3c26a2bf017e432fbc93ad68f3a

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