NVD / CVE Program· CNA Linux

CVE-2024-39461: clk: bcm: rpi: Assign ->num before accessing ->hws

Noroxi assessment

Priority: Monitor (action score 22/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.21% (FIRST EPSS).
Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
Fixed version: Linux Linux 6dc445c1905096b2ed4db1a84570375b4e00cc0f, 9562dbe5cdbb16ac887d27ef6f179980bb99193c, cdf9c7871d58d3df59d2775982e3533adb8ec920.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 6dc445c1905096b2ed4db1a84570375b4e00cc0f, 9562dbe5cdbb16ac887d27ef6f179980bb99193c, cdf9c7871d58d3df59d2775982e3533adb8ec920 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.5 · v3.1—No exploit Fix available

Denial of service

BDU:2025-03450

Published: Jun 25, 2024
Updated: Jun 17, 2026
EPSS: 0.2% · 11th percentile
CWE: CWE-129

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 22 / 40 · 5.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.2%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

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Noroxi analysis

What does it mean in your environment?

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

linux linux kernel6.6 and later · before 6.6.34
linux linux kernel6.7 and later · before 6.9.5

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

Linux Linux
- 6.6affected
- f316cdff8d677db9ad9c90acb44c4cd535b0ee27 and later · before 9562dbe5cdbb16ac887d27ef6f179980bb99193caffected · git
- f316cdff8d677db9ad9c90acb44c4cd535b0ee27 and later · before cdf9c7871d58d3df59d2775982e3533adb8ec920affected · git
- f316cdff8d677db9ad9c90acb44c4cd535b0ee27 and later · before 6dc445c1905096b2ed4db1a84570375b4e00cc0faffected · git
- before 6.6not affected · semver
- 6.6.34 and later · up to and including 6.6.*not affected · semver
- 6.9.5 and later · up to and including 6.9.*not affected · semver
- 6.10 and laternot affected · original_commit_for_fix

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:13	linux	before 6.9.7-1	6.9.7-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
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CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
89Now
CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
85Now

Published before and after this one in the same product

← EarlierCVE-2024-39301Jun 25, 2024 · net/9p: fix uninit-value in p9_client_rpc()
22Monitor
← EarlierCVE-2024-39371Jun 25, 2024 · io_uring: check for non-NULL file pointer in io_file_can_poll()
22Monitor
Later →CVE-2024-39462Jun 25, 2024 · clk: bcm: dvp: Assign ->num before accessing ->hws
39Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Linux Linux	6dc445c1905096b2ed4db1a84570375b4e00cc0f	Vendor (CNA)
Linux Linux	9562dbe5cdbb16ac887d27ef6f179980bb99193c	Vendor (CNA)
Linux Linux	cdf9c7871d58d3df59d2775982e3533adb8ec920	Vendor (CNA)
debian:linux	6.9.7-1 · Debian:13	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2021-4754832 days apartethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port()
39Monitor
CVE-2023-2008438 days apartKernel: udmabuf: improper validation of array index leading to local privilege escalation
32Monitor
CVE-2024-386234 days apartfs/ntfs3: Use variable length array instead of fixed size
31Monitor
CVE-2024-386314 days apartiio: adc: PAC1934: fix accessing out of bounds array index
31Monitor
CVE-2021-44395 days apartisdn: cpai: check ctr->cnr to avoid array index out of bound
31Monitor
CVE-2024-385526 days apartdrm/amd/display: Fix potential index out of bounds in color transformation function
31Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

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Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).