CVE-2023-52984: net: phy: dp83822: Fix null pointer access on DP83825/DP83826 devices
First published: Thu Mar 27 2025(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | >=5.10<5.10.168 | |
| Linux Kernel | >=5.11<5.15.93 | |
| Linux Kernel | >=5.16<6.1.11 | |
| Linux Kernel | =6.2-rc1 | |
| Linux Kernel | =6.2-rc2 | |
| Linux Kernel | =6.2-rc3 | |
| Linux Kernel | =6.2-rc4 | |
| Linux Kernel | =6.2-rc5 | |
| Linux Kernel | =6.2-rc6 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2023-52984?
CVE-2023-52984 is classified as a vulnerability in the Linux kernel related to null pointer dereference.
How do I fix CVE-2023-52984?
To fix CVE-2023-52984, update to the latest version of the Linux kernel where the vulnerability has been patched.
Which devices are affected by CVE-2023-52984?
CVE-2023-52984 affects the DP83825 and DP83826 PHY devices due to uninitialized private data pointers.
What can happen if CVE-2023-52984 is exploited?
If exploited, CVE-2023-52984 could lead to system crashes or other unexpected behavior due to null pointer access.
Is there a workaround for CVE-2023-52984 until a patch is applied?
There is no known workaround for CVE-2023-52984; applying the patch is the recommended approach.
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/type
- agent/description
- agent/first-publish-date
- agent/title
- agent/references
- agent/author
- agent/guess-ai
- agent/software-canonical-lookup
- collector/nvd-api
- source/NVD
- agent/last-modified-date
- agent/severity
- agent/remedy
- agent/event
- agent/softwarecombine
- collector/epss-latest
- source/FIRST
- agent/source
- agent/tags
- agent/epss
- vendor/linux
- canonical/linux kernel
- version/linux kernel/5.10
- version/linux kernel/5.11
- version/linux kernel/5.16
- version/linux kernel/6.2-rc1
- version/linux kernel/6.2-rc2
- version/linux kernel/6.2-rc3
- version/linux kernel/6.2-rc4
- version/linux kernel/6.2-rc5
- version/linux kernel/6.2-rc6