CVE-2023-52984
net: phy: dp83822: Fix null pointer access on DP83825/DP83826 devices
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
A flaw was found in the dp83822 module in the Linux kernel. A private data pointer is only initialized by the DP83822 PHY. It is left uninitialized by other smaller models, allowing a NULL pointer dereference to be triggered due to missing checks when interrupts are being configured, causing a crash and resulting in a denial of service.
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.
The SUSE Linux Enterprise 15 SP4 kernel was updated to receive various security.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2025-03-27 CVE Reserved
- 2025-03-27 CVE Published
- 2025-05-04 CVE Updated
- 2025-06-03 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-476: NULL Pointer Dereference
CAPEC
References (7)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/5dc39fd5ef35bc6919759fa99246581b1adc6b82 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2023-52984 | 2024-04-30 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2355472 | 2024-04-30 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.10 < 5.10.168 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.10 < 5.10.168" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.10 < 5.15.93 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.10 < 5.15.93" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.10 < 6.1.11 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.10 < 6.1.11" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.10 < 6.2 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.10 < 6.2" | en |
Affected
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