CVE-2023-53803

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2025-12-09. the CNA's CVSS baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — 5 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process()

A fix for:

BUG: KASAN: slab-out-of-bounds in ses_enclosure_data_process+0x949/0xe30 [ses] Read of size 1 at addr ffff88a1b043a451 by task systemd-udevd/3271

Checking after (and before in next loop) addl_desc_ptr[1] is sufficient, we expect the size to be sanitized before first access to addl_desc_ptr[1]. Make sure we don't walk beyond end of page.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity81% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

December 9, 2025

Last Modified

August 5, 2026

Advisory Details (8)

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

scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9b4f5028e493cb353a5c8f5c45073eeea0303abd
generic

scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/799e8dd2022d2e13f0c5c1906b40ceca07a23349
generic

scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0dfe68394cbe1d4fe579fb325ecc813c50528c5a
generic

scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2b28a7d261cb309912596d6a2d383ca370483527
generic

scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e4dd25da784b2e07dbfbf04509afa4c5a1375227
generic

scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/467afb1dd630d8c6d172bd6cacc125199b5f4f2d
generic

scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9e5c7d52085b8c84bc82a261580f0eb170039325
generic

scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/da1a955c48a16e16e925d6544793914e52a6fa51

Vendor Advisories for CVE-2023-53803(4)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:5.14.0-284.95.1.el9_22024-12-04redhat
redhatkernel-0:4.18.0-513.5.1.el8_92023-11-14redhat
redhatkernel-0:5.14.0-362.8.1.el9_32023-11-07redhat
linuxKernel @ 4.14.308—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.

Data Freshness Timeline

(refreshed 19× in last 7d / 47× 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 138 total refreshes for this CVE.

  1. 2026-08-05 19:15 UTCEPSS rescore
  2. 2026-08-05 19:15 UTCEPSS rescore
  3. 2026-08-05 10:15 UTCEG score recompute
  4. 2026-08-05 10:15 UTCVendor advisory
  5. 2026-08-05 10:15 UTCGHSA enrichment
  6. 2026-08-04 10:53 UTCEG score recompute
  7. 2026-08-04 10:53 UTCVendor advisory
  8. 2026-08-04 10:52 UTCGHSA enrichment
  9. 2026-08-04 10:36 UTCEPSS rescore
  10. 2026-08-04 09:27 UTCEG score recompute▲ 8.10
  11. 2026-08-04 09:27 UTCVendor advisory
  12. 2026-08-04 09:27 UTCGHSA enrichment
  13. 2026-08-04 09:20 UTCMITRE cvelistV5CVSS v3 → 8.1 · severity → HIGH
  14. 2026-08-03 10:34 UTCEPSS rescore
  15. 2026-08-02 02:25 UTCEPSS rescore
  16. 2026-08-02 02:25 UTCEPSS rescore
  17. 2026-08-01 04:14 UTCEPSS rescore
  18. 2026-07-30 16:26 UTCEPSS rescore
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  20. 2026-07-28 15:34 UTCEPSS rescore
  21. 2026-07-28 15:34 UTCEPSS rescore
  22. 2026-07-27 06:09 UTCOSV refresh
  23. 2026-07-26 14:53 UTCEPSS rescore
  24. 2026-07-25 14:16 UTCEPSS rescore
  25. 2026-07-24 14:16 UTCEPSS rescore
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  1. 2026-07-23 14:16 UTCEPSS rescore
  2. 2026-07-23 02:29 UTCEG score recompute
  3. 2026-07-22 23:16 UTCEG score recompute
  4. 2026-07-22 14:07 UTCEPSS rescore
  5. 2026-07-22 14:07 UTCEPSS rescore
  6. 2026-07-21 15:23 UTCEPSS rescore
  7. 2026-07-20 17:06 UTCEPSS rescore
  8. 2026-07-19 14:30 UTCEPSS rescore
  9. 2026-07-19 14:29 UTCEPSS rescore
  10. 2026-07-19 02:27 UTCEPSS rescore
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  12. 2026-07-18 10:03 UTCEPSS rescore
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  14. 2026-07-16 17:01 UTCEPSS rescore
  15. 2026-07-15 16:56 UTCEPSS rescore
  16. 2026-07-13 06:11 UTCEPSS rescore
  17. 2026-07-11 08:26 UTCEPSS rescore
  18. 2026-07-10 00:45 UTCOSV refresh
  19. 2026-07-09 19:08 UTCEPSS rescore
  20. 2026-07-08 15:13 UTCEPSS rescore
  21. 2026-07-07 13:45 UTCEPSS rescore
  22. 2026-07-07 13:44 UTCEPSS rescore
  23. 2026-07-06 16:26 UTCEPSS rescore
  24. 2026-07-06 16:26 UTCEPSS rescore
  25. 2026-07-06 02:22 UTCEPSS rescore
  26. 2026-07-06 02:22 UTCEPSS rescore
  27. 2026-07-05 02:29 UTCEPSS rescore
  28. 2026-07-04 06:29 UTCEPSS rescore
  29. 2026-07-01 15:05 UTCEPSS rescore
  30. 2026-06-30 23:21 UTCEPSS rescore
  31. 2026-06-30 23:21 UTCEPSS rescore
  32. 2026-06-29 14:05 UTCEPSS rescore
  33. 2026-06-28 14:06 UTCEPSS rescore
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  35. 2026-06-28 04:55 UTCEPSS rescore
  36. 2026-06-27 03:07 UTCEPSS rescore
  37. 2026-06-25 13:48 UTCEPSS rescore
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  39. 2026-06-24 14:04 UTCEPSS rescore
  40. 2026-06-24 14:04 UTCEPSS rescore
  41. 2026-06-23 21:31 UTCEPSS rescore
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  43. 2026-06-22 14:24 UTCEPSS rescore
  44. 2026-06-22 14:24 UTCEPSS rescore
  45. 2026-06-21 14:55 UTCEPSS rescore
  46. 2026-06-21 14:55 UTCEPSS rescore
  47. 2026-06-21 11:01 UTCOSV refresh
  48. 2026-06-21 01:58 UTCEPSS rescore
  49. 2026-06-21 01:58 UTCEPSS rescore
  50. 2026-06-19 19:24 UTCEPSS rescore
  51. 2026-06-19 19:24 UTCEPSS rescore
  52. 2026-06-18 17:51 UTCEPSS rescore
  53. 2026-06-17 17:51 UTCEPSS rescore
  54. 2026-06-16 17:51 UTCEPSS rescore
  55. 2026-06-16 17:51 UTCEPSS rescore
  56. 2026-06-15 17:47 UTCEPSS rescore
  57. 2026-06-14 23:16 UTCEPSS rescore
  58. 2026-06-13 22:59 UTCEPSS rescore
  59. 2026-06-13 22:59 UTCEPSS rescore
  60. 2026-06-12 23:11 UTCEPSS rescore
  61. 2026-06-11 13:59 UTCEPSS rescore
  62. 2026-06-10 22:17 UTCEPSS rescore
  63. 2026-06-10 13:21 UTCEPSS rescore
  64. 2026-06-08 14:16 UTCEPSS rescore
  65. 2026-06-08 14:16 UTCEPSS rescore
  66. 2026-06-07 15:24 UTCEPSS rescore
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  68. 2026-06-06 13:46 UTCEPSS rescore
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  72. 2026-06-05 06:09 UTCEPSS rescore
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  74. 2026-06-04 13:11 UTCEPSS rescore
  75. 2026-06-04 13:11 UTCEPSS rescore

Frequently asked(5)

What is CVE-2023-53803?
CVE-2023-53803 is a high vulnerability published on December 9, 2025. In the Linux kernel, the following vulnerability has been resolved: scsi: ses: Fix slab-out-of-bounds in sesenclosuredata_process() A fix for: BUG: KASAN: slab-out-of-bounds in sesenclosuredata_process+0x949/0xe30 [ses] Read of size 1 at addr ffff88a1b043a451 by task systemd-udevd/3271 Checking…
When was CVE-2023-53803 disclosed?
CVE-2023-53803 was first published in the National Vulnerability Database on December 9, 2025, 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-2023-53803 actively exploited?
CVE-2023-53803 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 83.2% of all scored CVEs.
What is the CVSS score of CVE-2023-53803?
CVE-2023-53803 has a CVSS v4.0 base score of 8.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2023-53803?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-53803, 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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