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CVE-2023-52804
fs/jfs: Add validity check for db_maxag and db_agpref
High7.8EPSS 0.26%
- Published
- Updated
- Reserved
- Assigned by
- Linux
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.26% · top 83% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < a0649e2dd4a3595b5595a29d0064d047c2fae2fb
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < ce15b0f1a431168f07b1cc6c9f71206a2db5c809
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 32bd8f1cbcf8b663e29dd1f908ba3a129541a11b
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < c6c8863fb3f57700ab583d875adda04caaf2278a
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 1f74d336990f37703a8eee77153463d65b67f70e
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 5013f8269887642cca784adc8db9b5f0b771533f
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < dca403bb035a565bb98ecc1dda5d30f676feda40
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 2323de34a3ae61a9f9b544c18583f71cea86721f
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 64933ab7b04881c6c18b21ff206c12278341c72e
- affected 2.6.12
- unaffected < 2.6.12
- unaffected 4.14.331 – ≤ 4.14.*
- unaffected 4.19.300 – ≤ 4.19.*
- unaffected 5.4.262 – ≤ 5.4.*
- unaffected 5.10.202 – ≤ 5.10.*
- unaffected 5.15.140 – ≤ 5.15.*
- unaffected 6.1.64 – ≤ 6.1.*
- unaffected 6.5.13 – ≤ 6.5.*
- unaffected 6.6.3 – ≤ 6.6.*
- unaffected 6.7 – ≤ *
References (9)
- https://git.kernel.org/stable/c/a0649e2dd4a3595b5595a29d0064d047c2fae2fb (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/ce15b0f1a431168f07b1cc6c9f71206a2db5c809 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/32bd8f1cbcf8b663e29dd1f908ba3a129541a11b (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/c6c8863fb3f57700ab583d875adda04caaf2278a (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/1f74d336990f37703a8eee77153463d65b67f70e (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/5013f8269887642cca784adc8db9b5f0b771533f (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/dca403bb035a565bb98ecc1dda5d30f676feda40 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/2323de34a3ae61a9f9b544c18583f71cea86721f (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/64933ab7b04881c6c18b21ff206c12278341c72e (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2023-52804)Record last updated .