clk: Fix clk_core_get NULL dereference

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2024-27038
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-05-01 13:15:49 UTC
Updated2026-05-12 12:16:30 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-476

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected dde4eff47c82c52a72af333d9e55370eee6d95d6 d7ae7d1265686b55832a445b1db8cdd69738ac07 git Not specified
CNA Linux Linux affected dde4eff47c82c52a72af333d9e55370eee6d95d6 239174535dba11f7b83de0eaaa27909024f8c185 git Not specified
CNA Linux Linux affected dde4eff47c82c52a72af333d9e55370eee6d95d6 0efb9ef6fb95384ba631d6819e66f10392aabfa2 git Not specified
CNA Linux Linux affected dde4eff47c82c52a72af333d9e55370eee6d95d6 a8b2b26fdd011ebe36d68a9a321ca45801685959 git Not specified
CNA Linux Linux affected dde4eff47c82c52a72af333d9e55370eee6d95d6 a5d9b1aa61b401867b9066d54086b3e4ee91f8ed git Not specified
CNA Linux Linux affected dde4eff47c82c52a72af333d9e55370eee6d95d6 c554badcae9c45b737a22d23454170c6020b90e6 git Not specified
CNA Linux Linux affected dde4eff47c82c52a72af333d9e55370eee6d95d6 6f073b24a9e2becd25ac4505a9780a87e621bb51 git Not specified
CNA Linux Linux affected dde4eff47c82c52a72af333d9e55370eee6d95d6 e97fe4901e0f59a0bfd524578fe3768f8ca42428 git Not specified
CNA Linux Linux affected 5.2 Not specified
CNA Linux Linux unaffected 5.2 semver Not specified
CNA Linux Linux unaffected 5.4.273 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.214 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.153 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.83 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.23 6.6.* semver Not specified
CNA Linux Linux unaffected 6.7.11 6.7.* semver Not specified
CNA Linux Linux unaffected 6.8.2 6.8.* semver Not specified
CNA Linux Linux unaffected 6.9 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected * custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/239174535dba11f7b83de0eaaa27909024f8c185 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/a8b2b26fdd011ebe36d68a9a321ca45801685959 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2024/06/msg00017.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
git.kernel.org/stable/c/6f073b24a9e2becd25ac4505a9780a87e621bb51 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/0efb9ef6fb95384ba631d6819e66f10392aabfa2 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/c554badcae9c45b737a22d23454170c6020b90e6 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/d7ae7d1265686b55832a445b1db8cdd69738ac07 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/a5d9b1aa61b401867b9066d54086b3e4ee91f8ed af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/e97fe4901e0f59a0bfd524578fe3768f8ca42428 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
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