Bug 2350364 (CVE-2024-58069)

Summary: CVE-2024-58069 kernel: rtc: pcf85063: fix potential OOB write in PCF85063 NVMEM read
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-03-06 16:01:52 UTC 
In the Linux kernel, the following vulnerability has been resolved:

rtc: pcf85063: fix potential OOB write in PCF85063 NVMEM read

The nvmem interface supports variable buffer sizes, while the regmap
interface operates with fixed-size storage. If an nvmem client uses a
buffer size less than 4 bytes, regmap_read will write out of bounds
as it expects the buffer to point at an unsigned int.

Fix this by using an intermediary unsigned int to hold the value.
Comment 1 Mauro Matteo Cascella 2025-03-06 17:08:09 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025030611-CVE-2024-58069-d1d4@gregkh/T
Comment 3 errata-xmlrpc 2025-05-13 11:55:17 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:7423 https://access.redhat.com/errata/RHSA-2025:7423