CVE-2023-54240 Details
Description
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: mtk_eth_soc: fix possible NULL pointer dereference in mtk_hwlro_get_fdir_all() rule_locs is allocated in ethtool_get_rxnfc and the size is determined by rule_cnt from user space. So rule_cnt needs to be check before using rule_locs to avoid NULL pointer dereference.
A vulnerability allowing a NULL pointer dereference has been identified in the Linux kernel's Mediatek Ethernet driver. This issue arises in the function 'mtk_hwlro_get_fdir_all()', where 'rule_locs' is allocated based on 'rule_cnt' from user space. The vulnerability occurs because 'rule_cnt' is not properly checked before using 'rule_locs', leading to the potential dereference of a NULL pointer.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed. The specific commit addressing this issue is available in the Linux kernel stable tree.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Dec 30, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/072324cfab9b96071c0782f51f53cc5aea1e9d5b | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/653fbddbdfc6673bba01b13dae5a4384ad8f92ec | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/751b2e22a188b0c306029d094da29b6b8de31430 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/75f2de75c1182e80708c932418e4895dbc88b68f | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/7776591e5ae2befff86579f68916a171971c6aab | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/e4c79810755f66c9a933ca810da2724133b1165a | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/fe0195fe48f85182bc7e7eabcad925bd3cbc10f5 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/ff5faed5f5487b0fd2b640ba1304f82a5ebaab42 | kernel.org | Source CodeVendor |
Weakness Enumeration
No weakness enumeration is available for this CVE.
Affected Products
| Product | Versions |
|---|---|
| Linux kernel | All versions |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Dec 30, 2025 | New CVE Received | kernel.org |