{"id":"CVE-2026-72114","title":"can: bcm: validate frame length in bcm_rx_setup() for RTR replies","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: bcm: validate frame length in bcm_rx_setup() for RTR replies\n\nbcm_tx_setup() validates cf->len against the CAN/CAN FD DLC limits\nbefore installing frames for TX_SE…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= ffd980f976e7fd666c2e61bf8ab35107efd11828 < cc1f9569f1c1adf74fa69d6f716a31b58a2fc6ce","Linux >= ffd980f976e7fd666c2e61bf8ab35107efd11828 < 204f2b232717bc470ddb9e1da1d27dd9c6ef0caa","Linux >= ffd980f976e7fd666c2e61bf8ab35107efd11828 < e061624c0a86c3c26a2bf017e432fbc93ad68f3a","Linux >= ffd980f976e7fd666c2e61bf8ab35107efd11828 < 7d966cdee006911d3957e1a4e72cb93c39cd8c1e","Linux >= ffd980f976e7fd666c2e61bf8ab35107efd11828 < 1b475c0c72f44622a320a4386ce9e76f85e69bc7","Linux >= ffd980f976e7fd666c2e61bf8ab35107efd11828 < deb6a697cce3f021e731df543597f37a5e54caab","Linux >= ffd980f976e7fd666c2e61bf8ab35107efd11828 < 59bfddea64159594feb62ef11b7d7a33c8ee3783","Linux >= ffd980f976e7fd666c2e61bf8ab35107efd11828 < 62ec41f364648be79d54d94d0d240ee326948afd","Linux 2.6.25"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T18:41:46.302799Z"},"published":"2026-08-15","updated":"2026-10-16","sourceUpdated":"2026-10-16T18:44:56.572Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72114","references":[{"url":"https://git.kernel.org/stable/c/cc1f9569f1c1adf74fa69d6f716a31b58a2fc6ce"},{"url":"https://git.kernel.org/stable/c/204f2b232717bc470ddb9e1da1d27dd9c6ef0caa"},{"url":"https://git.kernel.org/stable/c/e061624c0a86c3c26a2bf017e432fbc93ad68f3a"},{"url":"https://git.kernel.org/stable/c/7d966cdee006911d3957e1a4e72cb93c39cd8c1e"},{"url":"https://git.kernel.org/stable/c/1b475c0c72f44622a320a4386ce9e76f85e69bc7"},{"url":"https://git.kernel.org/stable/c/deb6a697cce3f021e731df543597f37a5e54caab"},{"url":"https://git.kernel.org/stable/c/59bfddea64159594feb62ef11b7d7a33c8ee3783"},{"url":"https://git.kernel.org/stable/c/62ec41f364648be79d54d94d0d240ee326948afd"}],"tags":["cve.org"],"epss":0.00169,"epssPercentile":0.05795,"ingestedAt":"2026-10-16T19:46:24.432Z","slug":"CVE-2026-72114","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ncan: bcm: validate frame length in bcm_rx_setup() for RTR replies\n\nbcm_tx_setup() validates cf->len against the CAN/CAN FD DLC limits\nbefore installing frames for TX_SETUP, but bcm_rx_setup() never did\nthe same for the RTR-reply frame configured via RX_SETUP with\nRX_RTR_FRAME.\n\n## Affected\n\n- `Linux >= ffd980f976e7fd666c2e61bf8ab35107efd11828 < cc1f9569f1c1adf74fa69d6f716a31b58a2fc6ce`\n- `Linux >= ffd980f976e7fd666c2e61bf8ab35107efd11828 < 204f2b232717bc470ddb9e1da1d27dd9c6ef0caa`\n- `Linux >= ffd980f976e7fd666c2e61bf8ab35107efd11828 < e061624c0a86c3c26a2bf017e432fbc93ad68f3a`\n- `Linux >= ffd980f976e7fd666c2e61bf8ab35107efd11828 < 7d966cdee006911d3957e1a4e72cb93c39cd8c1e`\n- `Linux >= ffd980f976e7fd666c2e61bf8ab35107efd11828 < 1b475c0c72f44622a320a4386ce9e76f85e69bc7`\n- `Linux >= ffd980f976e7fd666c2e61bf8ab35107efd11828 < deb6a697cce3f021e731df543597f37a5e54caab`\n- `Linux >= ffd980f976e7fd666c2e61bf8ab35107efd11828 < 59bfddea64159594feb62ef11b7d7a33c8ee3783`\n- `Linux >= ffd980f976e7fd666c2e61bf8ab35107efd11828 < 62ec41f364648be79d54d94d0d240ee326948afd`\n- `Linux 2.6.25`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}