CVE-2024-39461

Source
https://nvd.nist.gov/vuln/detail/CVE-2024-39461
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-39461.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2024-39461
Downstream
Related
Published
2024-06-25T15:15:14Z
Modified
2024-11-21T09:27:42Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
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

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.9.7-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}