阿里云漏洞库

In the Linux kernel, the following vulnerability has been resolved:

clk: bcm: rpi: 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

raspberrypi_discover_clocks() due to ->num being assigned after ->hws

has been accessed:

UBSAN: array-index-out-of-bounds in drivers/clk/bcm/clk-raspberrypi.c:374:4

index 3 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.

建议您更新当前系统或软件至最新版，完成漏洞的修复。

参考链接
https://access.redhat.com/security/cve/CVE-2024-39461
https://git.kernel.org/stable/c/6dc445c1905096b2ed4db1a84570375b4e00cc0f
https://git.kernel.org/stable/c/9562dbe5cdbb16ac887d27ef6f179980bb99193c
https://git.kernel.org/stable/c/cdf9c7871d58d3df59d2775982e3533adb8ec920
https://lore.kernel.org/linux-cve-announce/2024062512-CVE-2024-39461-cdbc@gregkh/T

CWE-ID	漏洞类型
CWE-129	对数组索引的验证不恰当