CVE-2023-53201: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: wraparound mbox producer index Driver is not handling the wraparound of the mbox producer index correctly. Currently the wraparound happens once u32 max is reached. Bit 31 of the producer index register is special and should be set only once for the first command. Because the producer index overflow setting bit31 after a long time, FW goes to initialization sequence and this causes FW hang. Fix is to wraparound the mbox producer index once it reaches u16 max.

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CVSS v3.1 Score

5.5

MEDIUM

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

Affected Products

Vendor	Product	Versions
linux	linux_kernel	4.11 — 5.10.188
linux	linux_kernel	5.11 — 5.15.121
linux	linux_kernel	5.16 — 6.1.39
linux	linux_kernel	6.2 — 6.3.13
linux	linux_kernel	6.4 — 6.4.4

References

Advisories & Patches

https://git.kernel.org/stable/c/0af91306e17ef3d18e5f100aa58aa787869118af https://git.kernel.org/stable/c/50d77c3739b2b15e9e1f1c9cbe50037d294800f8 https://git.kernel.org/stable/c/79226176cdd1b65a1e6a90e0e1a2b490f0a9df33 https://git.kernel.org/stable/c/7bfa0303fbc265c94cfbd17505c55b99848aa4e3 https://git.kernel.org/stable/c/9341501e2f7af29f5b5562c2840a7fde40eb7de4 https://git.kernel.org/stable/c/c9be352be9bb15e6b83e40abc4df7f4776b435ba

Frequently Asked Questions

What is CVE-2023-53201? +

In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: wraparound mbox producer index Driver is not handling the wraparound of the mbox producer index correctly. Currently the wraparound happens once u32 max is reached. Bit 31 of the producer index register is special and should be set only once for the first command. Because the producer index overflow setting bit31 after a long time, FW goes to initialization sequence and this causes FW hang. Fix is to wraparound the mbox producer index once it reaches u16 max. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-53201? +

CVE-2023-53201 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-53201? +

CVE-2023-53201 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-2023-53201? +

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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