CVE-2024-39462 (GCVE-0-2024-39462)

Vulnerability from cvelistv5 – Published: 2024-06-25 14:25 – Updated: 2025-05-04 09:16
VLAI?
Title
clk: bcm: dvp: Assign ->num before accessing ->hws
Summary
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.
Severity ?
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f316cdff8d677db9ad9c90acb44c4cd535b0ee27 , < 0dc913217fb79096597005bba9ba738e2db5cd02 (git)
Affected: f316cdff8d677db9ad9c90acb44c4cd535b0ee27 , < a1dd92fca0d6b58b55ed0484f75d4205dbb77010 (git)
Affected: f316cdff8d677db9ad9c90acb44c4cd535b0ee27 , < 9368cdf90f52a68120d039887ccff74ff33b4444 (git)
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    Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 6.6.34 , ≤ 6.6.* (semver)
Unaffected: 6.9.5 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
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