In the Linux kernel, the following vulnerability has been resolved: clk: bcm: dvp: Assign ->num before accessing ->hws Commit f316cdff8d67 ("clk: Annotate struct clk_hw_onecell_data with __counted_by") annotated the hws member of 'struct clk_hw_onecell_data' with __counted_by, which informs the bounds sanitizer about the number of elements in hws, so that it can warn when hws is accessed out of bounds. As noted in that change, the __counted_by member must be initialized with the number of elements before the first array access happens, otherwise there will be a warning from each access prior to the initialization because the number of elements is zero. This occurs in clk_dvp_probe() due to ->num being assigned after ->hws has been accessed: UBSAN: array-index-out-of-bounds in drivers/clk/bcm/clk-bcm2711-dvp.c:59:2 index 0 is out of range for type 'struct clk_hw *[] __counted_by(num)' (aka 'struct clk_hw *[]') Move the ->num initialization to before the first access of ->hws, which clears up the warning.
History

Thu, 19 Dec 2024 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-06-25T14:25:02.196Z

Updated: 2024-12-19T09:06:37.354Z

Reserved: 2024-06-25T14:23:23.744Z

Link: CVE-2024-39462

cve-icon Vulnrichment

Updated: 2024-08-02T04:26:14.280Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-06-25T15:15:14.580

Modified: 2024-11-21T09:27:42.857

Link: CVE-2024-39462

cve-icon Redhat

Severity : Low

Publid Date: 2024-06-25T00:00:00Z

Links: CVE-2024-39462 - Bugzilla