{"id":"CVE-2024-39462","summary":"clk: bcm: dvp: Assign -\u003enum before accessing -\u003ehws","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nclk: bcm: dvp: Assign -\u003enum before accessing -\u003ehws\n\nCommit f316cdff8d67 (\"clk: Annotate struct clk_hw_onecell_data with\n__counted_by\") annotated the hws member of 'struct clk_hw_onecell_data'\nwith __counted_by, which informs the bounds sanitizer about the number\nof elements in hws, so that it can warn when hws is accessed out of\nbounds. As noted in that change, the __counted_by member must be\ninitialized with the number of elements before the first array access\nhappens, otherwise there will be a warning from each access prior to the\ninitialization because the number of elements is zero. This occurs in\nclk_dvp_probe() due to -\u003enum being assigned after -\u003ehws has been\naccessed:\n\n  UBSAN: array-index-out-of-bounds in drivers/clk/bcm/clk-bcm2711-dvp.c:59:2\n  index 0 is out of range for type 'struct clk_hw *[] __counted_by(num)' (aka 'struct clk_hw *[]')\n\nMove the -\u003enum initialization to before the first access of -\u003ehws, which\nclears up the warning.","modified":"2026-04-02T12:16:59.711283Z","published":"2024-06-25T14:25:02.196Z","related":["MGASA-2024-0263","MGASA-2024-0266"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/39xxx/CVE-2024-39462.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0dc913217fb79096597005bba9ba738e2db5cd02"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9368cdf90f52a68120d039887ccff74ff33b4444"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a1dd92fca0d6b58b55ed0484f75d4205dbb77010"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/39xxx/CVE-2024-39462.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-39462"},{"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":"f316cdff8d677db9ad9c90acb44c4cd535b0ee27"},{"fixed":"0dc913217fb79096597005bba9ba738e2db5cd02"},{"fixed":"a1dd92fca0d6b58b55ed0484f75d4205dbb77010"},{"fixed":"9368cdf90f52a68120d039887ccff74ff33b4444"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-39462.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}