CVE-2023-52804high

CVE-2023-52804: high-severity vulnerability in Linux

fs/jfs: Add validity check for db_maxag and db_agpref

Published · Updated

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.8epss 0.3%
exploitation probability
0.3%top 84% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · Linux
Related CVEs — Linux

In the same product, most dangerous first.

CVE-2024-53197HIGHALSA: usb-audio: Fix potential out-of-bound accesses for Extigy and Mbox devicesEPSS 4.1%KEVCVE-2026-31431HIGHcrypto: algif_aead - Revert to operating out-of-placeEPSS 3.4%KEVCVE-2024-53104HIGHmedia: uvcvideo: Skip parsing frames of type UVC_VS_UNDEFINED in uvc_parse_formatEPSS 3.4%KEVCVE-2025-39682CRITICALtls: fix handling of zero-length records on the rx_listEPSS 2.9%KEVCVE-2024-36971HIGHnet: fix __dst_negative_advice() raceEPSS 2.7%KEVCVE-2024-53150HIGHALSA: usb-audio: Fix out of bounds reads when finding clock sourcesEPSS 1.4%KEV
References
https://git.kernel.org/stable/c/1f74d336990f37703a8eee77153463d65b67f70ehttps://git.kernel.org/stable/c/2323de34a3ae61a9f9b544c18583f71cea86721fhttps://git.kernel.org/stable/c/32bd8f1cbcf8b663e29dd1f908ba3a129541a11bhttps://git.kernel.org/stable/c/5013f8269887642cca784adc8db9b5f0b771533fhttps://git.kernel.org/stable/c/64933ab7b04881c6c18b21ff206c12278341c72ehttps://git.kernel.org/stable/c/a0649e2dd4a3595b5595a29d0064d047c2fae2fbhttps://git.kernel.org/stable/c/c6c8863fb3f57700ab583d875adda04caaf2278ahttps://git.kernel.org/stable/c/ce15b0f1a431168f07b1cc6c9f71206a2db5c809https://git.kernel.org/stable/c/dca403bb035a565bb98ecc1dda5d30f676feda40