CVE-2023-53541: linux kernel Memory Corruption — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: mtd: rawnand: brcmnand: Fix potential out-of-bounds access in oob write When the oob buffer length is not in multiple of words, the oob write function does out-of-bounds read on the oob source buffer at the last iteration. Fix that by always checking length limit on the oob buffer read and fill with 0xff when reaching the end of the buffer to the oob registers.

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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	4.2 — 4.14.326
linux	linux_kernel	4.15 — 4.19.295
linux	linux_kernel	4.20 — 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

References

Advisories & Patches

https://git.kernel.org/stable/c/14b1d00520b4d6a4818364334ce472b79cfc8976 https://git.kernel.org/stable/c/2353b7bb61e45e7cfd21505d0c6747ac8c9496a1 https://git.kernel.org/stable/c/2bc3d6ac704ea7263175ea3da663fdbbb7f3dd8b https://git.kernel.org/stable/c/45fe4ad7f439799ee1b7b5f80bf82e8b34a98d25 https://git.kernel.org/stable/c/5d53244186c9ac58cb88d76a0958ca55b83a15cd https://git.kernel.org/stable/c/648d1150a688698e37f7aaf302860180901cb30e https://git.kernel.org/stable/c/aae45746f4aee9818296e0500e0703e9d8caa5b8 https://git.kernel.org/stable/c/d00b031266514a9395124704630b056a5185ec17

Frequently Asked Questions

What is CVE-2023-53541? +

In the Linux kernel, the following vulnerability has been resolved: mtd: rawnand: brcmnand: Fix potential out-of-bounds access in oob write When the oob buffer length is not in multiple of words, the oob write function does out-of-bounds read on the oob source buffer at the last iteration. Fix that by always checking length limit on the oob buffer read and fill with 0xff when reaching the end of the buffer to the oob registers. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-53541? +

CVE-2023-53541 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-2023-53541? +

CVE-2023-53541 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-2023-53541? +

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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