CVE-2024-39461clk: bcm: rpi: Assign ->num before accessing ->hws
- 5.5MediumCVSS base score
- 0.21%Exploitation in 30 daysEPSS · top 88% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
Published
- 23 months later
· 23 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.21% · top 88% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected f316cdff8d677db9ad9c90acb44c4cd535b0ee27 – < 9562dbe5cdbb16ac887d27ef6f179980bb99193c
- affected f316cdff8d677db9ad9c90acb44c4cd535b0ee27 – < cdf9c7871d58d3df59d2775982e3533adb8ec920
- affected f316cdff8d677db9ad9c90acb44c4cd535b0ee27 – < 6dc445c1905096b2ed4db1a84570375b4e00cc0f
- affected 6.6
- unaffected < 6.6
- unaffected 6.6.34 – ≤ 6.6.*
- unaffected 6.9.5 – ≤ 6.9.*
- unaffected 6.10 – ≤ *
References
References3
- https://git.kernel.org/stable/c/9562dbe5cdbb16ac887d27ef6f179980bb99193c (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/cdf9c7871d58d3df59d2775982e3533adb8ec920 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/6dc445c1905096b2ed4db1a84570375b4e00cc0f (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2024-37986 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2024-39461)Record last updated .