Medium 5.5Published May 1, 2024

CVE-2024-27038clk: Fix clk_core_get NULL dereference

Updated under an hour ago (Oct 27, 2026, 9:50 PM ET)

Does this affect you?

It affects Linux and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: clk: Fix clk_core_get NULL dereference It is possible for clk_core_get to dereference a NULL in the following sequence: clk_core_get() of_clk_get_hw_from_clkspec() __of_clk_get_hw_from_provider() __clk_get_hw() __clk_get_hw() can return NULL which is dereferenced by clk_core_get() at hw->core. Prior to commit dde4eff47c82 ("clk: Look for parents with clkdev based clk_lookups") the check IS_ERR_OR_NULL() was performed which would have caught the NULL. Reading the description of this function it talks about returning NULL but that cannot be so at the moment. Update the function to check for hw before dereferencing it and return NULL if hw is NULL.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from dde4eff47c82c52a72af333d9e55370eee6d95d6 before d7ae7d1265686b55832a445b1db8cdd69738ac07; from dde4eff47c82c52a72af333d9e55370eee6d95d6 before 239174535dba11f7b83de0eaaa27909024f8c185; from dde4eff47c82c52a72af333d9e55370eee6d95d6 before 0efb9ef6fb95384ba631d6819e66f10392aabfa2; from dde4eff47c82c52a72af333d9e55370eee6d95d6 before a8b2b26fdd011ebe36d68a9a321ca45801685959; from dde4eff47c82c52a72af333d9e55370eee6d95d6 before a5d9b1aa61b401867b9066d54086b3e4ee91f8ed; from dde4eff47c82c52a72af333d9e55370eee6d95d6 before c554badcae9c45b737a22d23454170c6020b90e6; from dde4eff47c82c52a72af333d9e55370eee6d95d6 before 6f073b24a9e2becd25ac4505a9780a87e621bb51; from dde4eff47c82c52a72af333d9e55370eee6d95d6 before e97fe4901e0f59a0bfd524578fe3768f8ca42428	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	before V1.1.1	CISA ADP
linux linux_kernel linux:linux_kernel	from 5.2 before 5.4.273; from 5.5 before 5.10.214; from 5.11 before 5.15.153; from 5.16 before 6.1.83; from 6.2 before 6.6.23; from 6.7 before 6.7.11; from 6.8 before 6.8.2	NVD
debian debian_linux debian:debian_linux	10.0	NVD

References

References

https://git.kernel.org/stable/c/d7ae7d1265686b55832a445b1db8cdd69738ac07	patch
https://git.kernel.org/stable/c/239174535dba11f7b83de0eaaa27909024f8c185	patch
https://git.kernel.org/stable/c/0efb9ef6fb95384ba631d6819e66f10392aabfa2	patch
https://git.kernel.org/stable/c/a8b2b26fdd011ebe36d68a9a321ca45801685959	patch
https://git.kernel.org/stable/c/a5d9b1aa61b401867b9066d54086b3e4ee91f8ed	patch
https://git.kernel.org/stable/c/c554badcae9c45b737a22d23454170c6020b90e6	patch
https://git.kernel.org/stable/c/6f073b24a9e2becd25ac4505a9780a87e621bb51	patch
https://git.kernel.org/stable/c/e97fe4901e0f59a0bfd524578fe3768f8ca42428	patch
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html	mailing-list, third-party-advisory
https://cert-portal.siemens.com/productcert/html/ssa-265688.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.