CVE-2023-53495: linux kernel Memory Corruption — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: mvpp2_main: fix possible OOB write in mvpp2_ethtool_get_rxnfc() rules 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 rules to avoid OOB writing or NULL pointer dereference.

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CVSS v3.1 Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.2 — 5.4.257
linux	linux_kernel	5.5 — 5.10.195
linux	linux_kernel	5.11 — 5.15.132
linux	linux_kernel	5.16 — 6.1.54
linux	linux_kernel	6.2 — 6.5.4
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/349638f7e5d3c7d328565587bb7b0454bbee02e2 https://git.kernel.org/stable/c/51fe0a470543f345e3c62b6798929de3ddcedc1d https://git.kernel.org/stable/c/5bb09dddc724c5f7c4dc6dd3bfebd685eecd93e8 https://git.kernel.org/stable/c/61054a8ddb176b155a8f2bacdfefb3727187f5d9 https://git.kernel.org/stable/c/625b70d31dd4df4b96b3ddcbe251debb33bd67f5 https://git.kernel.org/stable/c/ba6673824efa3dc198b04a54e69dce480066d7d9

Frequently Asked Questions

What is CVE-2023-53495? +

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: mvpp2_main: fix possible OOB write in mvpp2_ethtool_get_rxnfc() rules 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 rules to avoid OOB writing or NULL pointer dereference. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-53495? +

CVE-2023-53495 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-53495? +

CVE-2023-53495 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-53495? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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