CVE-2023-52804

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2024-05-21. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

May 21, 2024

Last Modified

August 5, 2026

Advisory Details (9)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

fs/jfs: Add validity check for db_maxag and db_agpref - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1f74d336990f37703a8eee77153463d65b67f70e
generic

fs/jfs: Add validity check for db_maxag and db_agpref - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/dca403bb035a565bb98ecc1dda5d30f676feda40
generic

fs/jfs: Add validity check for db_maxag and db_agpref - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ce15b0f1a431168f07b1cc6c9f71206a2db5c809
generic

fs/jfs: Add validity check for db_maxag and db_agpref - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c6c8863fb3f57700ab583d875adda04caaf2278a
generic

fs/jfs: Add validity check for db_maxag and db_agpref - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a0649e2dd4a3595b5595a29d0064d047c2fae2fb
generic

fs/jfs: Add validity check for db_maxag and db_agpref - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/64933ab7b04881c6c18b21ff206c12278341c72e
generic

fs/jfs: Add validity check for db_maxag and db_agpref - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5013f8269887642cca784adc8db9b5f0b771533f
generic

fs/jfs: Add validity check for db_maxag and db_agpref - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/32bd8f1cbcf8b663e29dd1f908ba3a129541a11b
generic

fs/jfs: Add validity check for db_maxag and db_agpref - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2323de34a3ae61a9f9b544c18583f71cea86721f

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 4.14.331—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (35 versions)5.10.205-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.27-1 ... 6.1.55-1~bpo11+1 (11 versions)6.1.64-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—6.6.8-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—6.6.8-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 29× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 164 total refreshes for this CVE.

  1. 2026-09-18 19:26 UTCEPSS rescore
  2. 2026-09-16 14:06 UTCEPSS rescore
  3. 2026-09-16 05:11 UTCEPSS rescore
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  9. 2026-09-11 09:34 UTCEPSS rescore
  10. 2026-09-08 21:58 UTCEPSS rescore
  11. 2026-09-07 15:59 UTCEPSS rescore
  12. 2026-09-07 06:48 UTCOSV refresh
  13. 2026-09-06 13:46 UTCEPSS rescore
  14. 2026-09-05 15:26 UTCEPSS rescore
  15. 2026-09-04 13:58 UTCEPSS rescore
  16. 2026-09-04 05:04 UTCEPSS rescore
  17. 2026-09-02 14:10 UTCEPSS rescore
  18. 2026-09-01 13:52 UTCEPSS rescore
  19. 2026-09-01 04:36 UTCEPSS rescore
  20. 2026-08-30 19:15 UTCEPSS rescore
  21. 2026-08-30 01:20 UTCEPSS rescore
  22. 2026-08-28 21:39 UTCEPSS rescore
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  24. 2026-08-26 14:44 UTCEPSS rescore
  25. 2026-08-25 13:47 UTCEPSS rescore
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  1. 2026-08-23 00:17 UTCEPSS rescore
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  3. 2026-08-21 23:47 UTCEPSS rescore
  4. 2026-08-20 22:53 UTCEPSS rescore
  5. 2026-08-20 16:31 UTCOSV refresh
  6. 2026-08-19 17:02 UTCEPSS rescore
  7. 2026-08-18 13:46 UTCEPSS rescore
  8. 2026-08-16 14:54 UTCEPSS rescore
  9. 2026-08-16 02:12 UTCEPSS rescore
  10. 2026-08-15 01:28 UTCEPSS rescore
  11. 2026-08-13 21:58 UTCEPSS rescore
  12. 2026-08-12 13:49 UTCEPSS rescore
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  14. 2026-08-10 23:58 UTCEPSS rescore
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  18. 2026-08-06 13:45 UTCEPSS rescore
  19. 2026-08-05 19:15 UTCEPSS rescore
  20. 2026-08-05 19:15 UTCEPSS rescore
  21. 2026-08-05 10:24 UTCEG score recompute
  22. 2026-08-05 10:24 UTCGHSA enrichment
  23. 2026-08-04 12:10 UTCEG score recompute
  24. 2026-08-04 12:10 UTCGHSA enrichment
  25. 2026-08-04 10:36 UTCEPSS rescore
  26. 2026-08-04 09:50 UTCEG score recompute
  27. 2026-08-04 09:50 UTCGHSA enrichment
  28. 2026-08-03 10:34 UTCEPSS rescore
  29. 2026-08-02 02:25 UTCEPSS rescore
  30. 2026-08-02 02:25 UTCEPSS rescore
  31. 2026-08-01 04:14 UTCEPSS rescore
  32. 2026-08-01 01:42 UTCOSV refresh
  33. 2026-07-30 16:26 UTCEPSS rescore
  34. 2026-07-30 01:29 UTCEPSS rescore
  35. 2026-07-28 15:34 UTCEPSS rescore
  36. 2026-07-28 15:34 UTCEPSS rescore
  37. 2026-07-26 14:53 UTCEPSS rescore
  38. 2026-07-25 14:16 UTCEPSS rescore
  39. 2026-07-24 14:16 UTCEPSS rescore
  40. 2026-07-23 14:16 UTCEPSS rescore
  41. 2026-07-23 02:29 UTCEG score recompute
  42. 2026-07-22 23:16 UTCEG score recompute
  43. 2026-07-22 14:07 UTCEPSS rescore
  44. 2026-07-22 14:07 UTCEPSS rescore
  45. 2026-07-21 15:23 UTCEPSS rescore
  46. 2026-07-20 17:06 UTCEPSS rescore
  47. 2026-07-19 14:30 UTCEPSS rescore
  48. 2026-07-19 14:29 UTCEPSS rescore
  49. 2026-07-19 02:27 UTCEPSS rescore
  50. 2026-07-19 02:27 UTCEPSS rescore
  51. 2026-07-18 10:03 UTCEPSS rescore
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  53. 2026-07-16 17:01 UTCEPSS rescore
  54. 2026-07-15 16:56 UTCEPSS rescore
  55. 2026-07-15 01:59 UTCEPSS rescore
  56. 2026-07-15 01:59 UTCEPSS rescore
  57. 2026-07-14 09:10 UTCOSV refresh
  58. 2026-07-13 22:28 UTCEPSS rescore
  59. 2026-07-13 22:28 UTCEPSS rescore
  60. 2026-07-13 06:11 UTCEPSS rescore
  61. 2026-07-12 05:45 UTCEPSS rescore
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  63. 2026-07-11 08:26 UTCEPSS rescore
  64. 2026-07-09 19:08 UTCEPSS rescore
  65. 2026-07-08 15:13 UTCEPSS rescore
  66. 2026-07-07 13:45 UTCEPSS rescore
  67. 2026-07-07 13:44 UTCEPSS rescore
  68. 2026-07-06 16:26 UTCEPSS rescore
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  70. 2026-07-06 02:22 UTCEPSS rescore
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  72. 2026-07-05 02:29 UTCEPSS rescore
  73. 2026-07-04 06:29 UTCEPSS rescore
  74. 2026-07-01 15:05 UTCEPSS rescore
  75. 2026-06-30 23:21 UTCEPSS rescore

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2023-52804?
CVE-2023-52804 is a high vulnerability published on May 21, 2024. In the Linux kernel, the following vulnerability has been resolved: fs/jfs: Add validity check for dbmaxag and dbagpref Both dbmaxag and dbagpref are used as the index of the db_agfree array, but there is currently no validity check for dbmaxag and dbagpref, which can lead to errors. The following…
When was CVE-2023-52804 disclosed?
CVE-2023-52804 was first published in the National Vulnerability Database on May 21, 2024, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-52804 actively exploited?
CVE-2023-52804 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 82.6% of all scored CVEs.
What is the CVSS score of CVE-2023-52804?
CVE-2023-52804 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2023-52804?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-52804, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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