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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.26% probability · 17th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-129
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/1f74d336990f37703a8eee77153463d65b67f70ePatch
- https://git.kernel.org/stable/c/2323de34a3ae61a9f9b544c18583f71cea86721fPatch
- https://git.kernel.org/stable/c/32bd8f1cbcf8b663e29dd1f908ba3a129541a11bPatch
- https://git.kernel.org/stable/c/5013f8269887642cca784adc8db9b5f0b771533fPatch
- https://git.kernel.org/stable/c/64933ab7b04881c6c18b21ff206c12278341c72ePatch
- https://git.kernel.org/stable/c/a0649e2dd4a3595b5595a29d0064d047c2fae2fbPatch
- https://git.kernel.org/stable/c/c6c8863fb3f57700ab583d875adda04caaf2278aPatch
- https://git.kernel.org/stable/c/ce15b0f1a431168f07b1cc6c9f71206a2db5c809Patch
- https://git.kernel.org/stable/c/dca403bb035a565bb98ecc1dda5d30f676feda40Patch
- https://git.kernel.org/stable/c/1f74d336990f37703a8eee77153463d65b67f70ePatch
- https://git.kernel.org/stable/c/2323de34a3ae61a9f9b544c18583f71cea86721fPatch
- https://git.kernel.org/stable/c/32bd8f1cbcf8b663e29dd1f908ba3a129541a11bPatch
- https://git.kernel.org/stable/c/5013f8269887642cca784adc8db9b5f0b771533fPatch
- https://git.kernel.org/stable/c/64933ab7b04881c6c18b21ff206c12278341c72ePatch
- https://git.kernel.org/stable/c/a0649e2dd4a3595b5595a29d0064d047c2fae2fbPatch
- https://git.kernel.org/stable/c/c6c8863fb3f57700ab583d875adda04caaf2278aPatch
- https://git.kernel.org/stable/c/ce15b0f1a431168f07b1cc6c9f71206a2db5c809Patch
- https://git.kernel.org/stable/c/dca403bb035a565bb98ecc1dda5d30f676feda40Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.