NULL pointer dereference in Linux kernel net phy driver



| Updated: 2025-05-14
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-35891
CWE-ID CWE-476
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) NULL pointer dereference

EUVDB-ID: #VU90511

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-35891

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the lan8814_txtstamp(), lan8814_get_sig_rx(), lan8814_match_rx_ts(), lan8814_ptpci_adjfine(), lan8814_get_sig_tx(), lan8814_dequeue_tx_skb() and lan8814_match_skb() functions in drivers/net/phy/micrel.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.1 - 6.8.4

CPE2.3 External links

https://git.kernel.org/stable/c/10608161696c2768f53426642f78a42bcaaa53e8
https://git.kernel.org/stable/c/95c1016a2d92c4c28a9d1b6d09859c00b19c0ea4
https://git.kernel.org/stable/c/49767b0df276f12e3e7184601e09ee7430e252dc
https://git.kernel.org/stable/c/96c155943a703f0655c0c4cab540f67055960e91
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.85
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.26
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.8.5


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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