{"id":"CVE-2024-49977","summary":"net: stmmac: Fix zero-division error when disabling tc cbs","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: Fix zero-division error when disabling tc cbs\n\nThe commit b8c43360f6e4 (\"net: stmmac: No need to calculate speed divider\nwhen offload is disabled\") allows the \"port_transmit_rate_kbps\" to be\nset to a value of 0, which is then passed to the \"div_s64\" function when\ntc-cbs is disabled. This leads to a zero-division error.\n\nWhen tc-cbs is disabled, the idleslope, sendslope, and credit values the\ncredit values are not required to be configured. Therefore, adding a return\nstatement after setting the txQ mode to DCB when tc-cbs is disabled would\nprevent a zero-division error.","modified":"2026-03-20T12:39:29.343210Z","published":"2024-10-21T18:02:24.480Z","related":["MGASA-2024-0344","MGASA-2024-0345","USN-7276-1","USN-7277-1","openSUSE-SU-2024:14500-1","openSUSE-SU-2025:14705-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/49xxx/CVE-2024-49977.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/03582f4752427f60817d896f1a827aff772bd31e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5d43e1ad4567d67af2b42d3ab7c14152ffed25c6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/675faf5a14c14a2be0b870db30a70764df81e2df"},{"type":"WEB","url":"https://git.kernel.org/stable/c/837d9df9c0792902710149d1a5e0991520af0f93"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b0da9504a528f05f97d926b4db74ff21917a33e9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e297a2bf56d12fd7f91a0c209eb6ea84361f3368"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e33fe25b1efe4f2e6a5858786dbc82ae4c44ed4c"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/49xxx/CVE-2024-49977.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-49977"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"b4bca4722fda928810d024350493990de39f1e40"},{"fixed":"e33fe25b1efe4f2e6a5858786dbc82ae4c44ed4c"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"2145583e5995598f50d66f8710c86bb1e910ac46"},{"fixed":"b0da9504a528f05f97d926b4db74ff21917a33e9"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"521d42a1c24d638241220d4b9fa7e7a0ed02b88e"},{"fixed":"5d43e1ad4567d67af2b42d3ab7c14152ffed25c6"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"a71b686418ee6bcb6d6365f7f6d838d9874d9c64"},{"fixed":"03582f4752427f60817d896f1a827aff772bd31e"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"b8c43360f6e424131fa81d3ba8792ad8ff25a09e"},{"fixed":"e297a2bf56d12fd7f91a0c209eb6ea84361f3368"},{"fixed":"837d9df9c0792902710149d1a5e0991520af0f93"},{"fixed":"675faf5a14c14a2be0b870db30a70764df81e2df"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"f01782804147a8c21f481b3342c83422c041d2c0"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-49977.json"}}],"schema_version":"1.7.5"}