Bug 2355472 (CVE-2023-52984) - CVE-2023-52984 kernel: net: phy: dp83822: Fix null pointer access on DP83825/DP83826 devices
Summary: CVE-2023-52984 kernel: net: phy: dp83822: Fix null pointer access on DP83825/...
Keywords:
Status: NEW
Alias: CVE-2023-52984
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-03-27 17:03 UTC by OSIDB Bzimport
Modified: 2025-05-14 14:16 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2025-03-27 17:03:17 UTC
In the Linux kernel, the following vulnerability has been resolved:

net: phy: dp83822: Fix null pointer access on DP83825/DP83826 devices

The probe() function is only used for the DP83822 PHY, leaving the
private data pointer uninitialized for the smaller DP83825/26 models.
While all uses of the private data structure are hidden in 82822 specific
callbacks, configuring the interrupt is shared across all models.
This causes a NULL pointer dereference on the smaller PHYs as it accesses
the private data unchecked. Verifying the pointer avoids that.


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