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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 24.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-gcp | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-gke | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-ibm | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-intel | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-lowlatency | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-nvidia | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-oem-6.8 | < any | UNKNOWN |
git.kernel.org/linus/6dc445c1905096b2ed4db1a84570375b4e00cc0f (6.10-rc1)
git.kernel.org/stable/c/6dc445c1905096b2ed4db1a84570375b4e00cc0f
git.kernel.org/stable/c/9562dbe5cdbb16ac887d27ef6f179980bb99193c
git.kernel.org/stable/c/cdf9c7871d58d3df59d2775982e3533adb8ec920
launchpad.net/bugs/cve/CVE-2024-39461
nvd.nist.gov/vuln/detail/CVE-2024-39461
security-tracker.debian.org/tracker/CVE-2024-39461
www.cve.org/CVERecord?id=CVE-2024-39461