CVE-2023-52804

HIGH
Published May 21, 2024 Modified Sep 23, 2025 CWE-129

Description

In the Linux kernel, the following vulnerability has been resolved: fs/jfs: Add validity check for db_maxag and db_agpref Both db_maxag and db_agpref are used as the index of the db_agfree array, but there is currently no validity check for db_maxag and db_agpref, which can lead to errors. The following is related bug reported by Syzbot: UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:639:20 index 7936 is out of range for type 'atomic_t[128]' Add checking that the values of db_maxag and db_agpref are valid indexes for the db_agfree array.

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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-129 CWE-129

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel

References

Advisories & Patches

https://git.kernel.org/stable/c/1f74d336990f37703a8eee77153463d65b67f70e https://git.kernel.org/stable/c/2323de34a3ae61a9f9b544c18583f71cea86721f https://git.kernel.org/stable/c/32bd8f1cbcf8b663e29dd1f908ba3a129541a11b https://git.kernel.org/stable/c/5013f8269887642cca784adc8db9b5f0b771533f https://git.kernel.org/stable/c/64933ab7b04881c6c18b21ff206c12278341c72e https://git.kernel.org/stable/c/a0649e2dd4a3595b5595a29d0064d047c2fae2fb https://git.kernel.org/stable/c/c6c8863fb3f57700ab583d875adda04caaf2278a https://git.kernel.org/stable/c/ce15b0f1a431168f07b1cc6c9f71206a2db5c809 https://git.kernel.org/stable/c/dca403bb035a565bb98ecc1dda5d30f676feda40 https://git.kernel.org/stable/c/1f74d336990f37703a8eee77153463d65b67f70e https://git.kernel.org/stable/c/2323de34a3ae61a9f9b544c18583f71cea86721f https://git.kernel.org/stable/c/32bd8f1cbcf8b663e29dd1f908ba3a129541a11b https://git.kernel.org/stable/c/5013f8269887642cca784adc8db9b5f0b771533f https://git.kernel.org/stable/c/64933ab7b04881c6c18b21ff206c12278341c72e https://git.kernel.org/stable/c/a0649e2dd4a3595b5595a29d0064d047c2fae2fb https://git.kernel.org/stable/c/c6c8863fb3f57700ab583d875adda04caaf2278a https://git.kernel.org/stable/c/ce15b0f1a431168f07b1cc6c9f71206a2db5c809 https://git.kernel.org/stable/c/dca403bb035a565bb98ecc1dda5d30f676feda40

Frequently Asked Questions

What is CVE-2023-52804? +
In the Linux kernel, the following vulnerability has been resolved: fs/jfs: Add validity check for db_maxag and db_agpref Both db_maxag and db_agpref are used as the index of the db_agfree array, but there is currently no validity check for db_maxag and db_agpref, which can lead to errors. The following is related bug reported by Syzbot: UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:639:20 index 7936 is out of range for type 'atomic_t[128]' Add checking that the values of db_maxag and db_agpref are valid indexes for the db_agfree array. It has a CVSS v3.1 base score of 7.8 (HIGH).
How severe is CVE-2023-52804? +
CVE-2023-52804 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-2023-52804? +
CVE-2023-52804 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-2023-52804? +
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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