CVE-2024-39461
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-39461
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-39461.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-39461
- Downstream
- Related
- Published
- 2024-06-25T14:25:01Z
- Modified
- 2025-10-17T08:16:17.022630Z
- Summary
- clk: bcm: rpi: Assign ->num before accessing ->hws
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
clk: bcm: rpi: Assign ->num before accessing ->hws
Commit f316cdff8d67 ("clk: Annotate struct clkhwonecelldata with _countedby") annotated the hws member of 'struct clkhwonecelldata' with _countedby, 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 _countedby 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 raspberrypidiscoverclocks() 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 clkhw *[] _countedby(num)' (aka 'struct clkhw *[]')
Move the ->num initialization to before the first access of ->hws, which clears up the warning.
- References
Affected packages
Git / 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
-
Introducedf316cdff8d677db9ad9c90acb44c4cd535b0ee27Fixed9562dbe5cdbb16ac887d27ef6f179980bb99193c
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedf316cdff8d677db9ad9c90acb44c4cd535b0ee27Fixedcdf9c7871d58d3df59d2775982e3533adb8ec920
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedf316cdff8d677db9ad9c90acb44c4cd535b0ee27Fixed6dc445c1905096b2ed4db1a84570375b4e00cc0f