CVE-2023-2008

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2023-04-14. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.8Exploit: Elevated riskExposed: 0

A fix is available — apply it.

A flaw was found in the Linux kernel's udmabuf device driver, within a fault handler. This issue occurs due to the lack of proper validation of user-supplied data, which can result in memory access past the end of an array. This may allow an attacker to escalate privileges and execute arbitrary code in the context of the kernel.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
51(Track)
EG Risk 51/100SSVC: 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%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
61%
KEV
Not listed

Published

April 14, 2023

Last Modified

August 10, 2026

Advisory Details (9)

Auto-updated Aug 10, 2026
Patch available. Sources: redhat, github_commit.
github_commit

commit 05b252cccb2e (torvalds/linux)

Fix landed in torvalds/linux commit 05b252cccb2e — awaiting tagged release

https://github.com/torvalds/linux/commit/05b252cccb2e5c3f56119d25de684b4f810ba4
redhat Patch Available

2186862 – (CVE-2023-2008, ZDI-23-441, ZDI-CAN-17639) CVE-2023-2008 kernel: udmabuf: improper validation of array index leading to local privilege escalation

Affected: Red Hat Enterprise Linux 9 were previously updated to a version that contains the fix via the following errata:

https://bugzilla.redhat.com/show_bug.cgi?id=2186862
generic

ZDI-23-441 - TrendAI™ Zero Day Initiative™ (ZDI)

https://www.zerodayinitiative.com/advisories/ZDI-23-441/
redhat Patch Available

CVE-2023-2008 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 6, 7, and 8 are not affected by this flaw as they did not include support for the userspace dmabuf mi

https://access.redhat.com/security/cve/CVE-2023-2008
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.0 Extended Update Support.

https://access.redhat.com/errata/RHSA-2023:3490
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.0 Extended Update Support.

https://access.redhat.com/errata/RHSA-2023:3470
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.0 Extended Update Support.

https://access.redhat.com/errata/RHSA-2023:3465
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2022:8267
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2022:7933

Vendor Advisories for CVE-2023-2008(6)

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

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:5.14.0-70.58.1.el9_02023-06-06redhat
redhatkernel-rt-0:5.14.0-70.58.1.rt21.129.el9_02023-06-06redhat
redhatkpatch-patch2023-06-06redhat
redhatkernel-0:5.14.0-162.6.1.el9_12022-11-15redhat
redhatkernel-rt-0:5.14.0-162.6.1.rt21.168.el9_12022-11-15redhat

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 (14 versions)5.10.127-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux—5.18.14-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—5.18.14-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—5.18.14-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 6× in last 7d / 30× 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. 2026-09-07 15:59 UTCEPSS rescore
  2. 2026-09-06 13:45 UTCEPSS rescore
  3. 2026-09-05 15:25 UTCEPSS rescore
  4. 2026-09-04 13:58 UTCEPSS rescore
  5. 2026-09-04 05:04 UTCEPSS rescore
  6. 2026-09-02 14:09 UTCEPSS rescore
  7. 2026-09-01 13:51 UTCEPSS rescore
  8. 2026-08-30 19:15 UTCEPSS rescore
  9. 2026-08-30 01:19 UTCEPSS rescore
  10. 2026-08-28 21:38 UTCEPSS rescore
  11. 2026-08-27 14:23 UTCEPSS rescore
  12. 2026-08-27 05:04 UTCOSV refresh
  13. 2026-08-26 14:43 UTCEPSS rescore
  14. 2026-08-25 13:46 UTCEPSS rescore
  15. 2026-08-24 14:14 UTCEPSS rescore
  16. 2026-08-23 00:17 UTCEPSS rescore
  17. 2026-08-21 23:46 UTCEPSS rescore
  18. 2026-08-20 22:53 UTCEPSS rescore
  19. 2026-08-19 17:02 UTCEPSS rescore
  20. 2026-08-18 13:46 UTCEPSS rescore
  21. 2026-08-17 13:44 UTCEPSS rescore
  22. 2026-08-16 14:53 UTCEPSS rescore
  23. 2026-08-16 02:12 UTCEPSS rescore
  24. 2026-08-15 01:28 UTCEPSS rescore
  25. 2026-08-13 21:58 UTCEPSS rescore
Show 75 more
  1. 2026-08-12 13:48 UTCEPSS rescore
  2. 2026-08-11 13:39 UTCEPSS rescore
  3. 2026-08-10 18:18 UTCEG score recompute
  4. 2026-08-10 18:18 UTCVendor advisory
  5. 2026-08-10 18:18 UTCGHSA enrichment
  6. 2026-08-09 13:44 UTCEPSS rescore
  7. 2026-08-08 16:34 UTCEPSS rescore
  8. 2026-08-07 16:24 UTCEPSS rescore
  9. 2026-08-06 13:44 UTCEPSS rescore
  10. 2026-08-05 19:15 UTCEPSS rescore
  11. 2026-08-05 19:15 UTCEPSS rescore
  12. 2026-08-04 15:07 UTCEPSS rescore
  13. 2026-08-04 10:35 UTCEPSS rescore
  14. 2026-08-03 10:34 UTCEPSS rescore
  15. 2026-08-02 15:57 UTCOSV refresh
  16. 2026-08-02 02:25 UTCEPSS rescore
  17. 2026-08-02 02:24 UTCEPSS rescore
  18. 2026-08-01 04:13 UTCEPSS rescore
  19. 2026-08-01 04:13 UTCEPSS rescore
  20. 2026-07-30 16:26 UTCEPSS rescore
  21. 2026-07-30 16:26 UTCEPSS rescore
  22. 2026-07-30 01:28 UTCEPSS rescore
  23. 2026-07-30 01:28 UTCEPSS rescore
  24. 2026-07-28 15:34 UTCEPSS rescore
  25. 2026-07-28 15:34 UTCEPSS rescore
  26. 2026-07-27 14:10 UTCEPSS rescore
  27. 2026-07-26 14:52 UTCEPSS rescore
  28. 2026-07-26 14:52 UTCEPSS rescore
  29. 2026-07-25 14:16 UTCEPSS rescore
  30. 2026-07-24 14:15 UTCEPSS rescore
  31. 2026-07-23 14:16 UTCEPSS rescore
  32. 2026-07-23 14:16 UTCEPSS rescore
  33. 2026-07-23 02:18 UTCEG score recompute
  34. 2026-07-22 23:05 UTCEG score recompute
  35. 2026-07-22 14:06 UTCEPSS rescore
  36. 2026-07-22 14:06 UTCEPSS rescore
  37. 2026-07-21 15:23 UTCEPSS rescore
  38. 2026-07-20 17:06 UTCEPSS rescore
  39. 2026-07-19 14:29 UTCEPSS rescore
  40. 2026-07-19 14:29 UTCEPSS rescore
  41. 2026-07-19 02:27 UTCEPSS rescore
  42. 2026-07-19 02:27 UTCEPSS rescore
  43. 2026-07-18 10:03 UTCEPSS rescore
  44. 2026-07-18 10:03 UTCEPSS rescore
  45. 2026-07-16 17:01 UTCEPSS rescore
  46. 2026-07-16 17:01 UTCEPSS rescore
  47. 2026-07-15 23:19 UTCOSV refresh
  48. 2026-07-15 16:56 UTCEPSS rescore
  49. 2026-07-15 16:56 UTCEPSS rescore
  50. 2026-07-15 01:58 UTCEPSS rescore
  51. 2026-07-15 01:58 UTCEPSS rescore
  52. 2026-07-13 22:28 UTCEPSS rescore
  53. 2026-07-13 22:28 UTCEPSS rescore
  54. 2026-07-13 06:11 UTCEPSS rescore
  55. 2026-07-13 06:11 UTCEPSS rescore
  56. 2026-07-12 05:45 UTCEPSS rescore
  57. 2026-07-11 08:25 UTCEPSS rescore
  58. 2026-07-11 08:25 UTCEPSS rescore
  59. 2026-07-09 19:08 UTCEPSS rescore
  60. 2026-07-09 19:08 UTCEPSS rescore
  61. 2026-07-08 15:13 UTCEPSS rescore
  62. 2026-07-07 13:44 UTCEPSS rescore
  63. 2026-07-06 16:26 UTCEPSS rescore
  64. 2026-07-06 16:26 UTCEPSS rescore
  65. 2026-07-05 02:28 UTCEPSS rescore
  66. 2026-07-04 06:29 UTCEPSS rescore
  67. 2026-07-02 16:59 UTCEPSS rescore
  68. 2026-07-01 15:04 UTCEPSS rescore
  69. 2026-06-30 23:21 UTCEPSS rescore
  70. 2026-06-30 23:21 UTCEPSS rescore
  71. 2026-06-28 14:06 UTCEPSS rescore
  72. 2026-06-28 14:06 UTCEPSS rescore
  73. 2026-06-28 04:54 UTCEPSS rescore
  74. 2026-06-27 23:34 UTCOSV refresh
  75. 2026-06-27 03:07 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCbluefrostsecurity/CVE-2023-2008
    First seen Jun 12, 2023

    Proof of concept code for CVE-2023-2008

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2023-2008?
CVE-2023-2008 is a high vulnerability published on April 14, 2023. A flaw was found in the Linux kernel's udmabuf device driver, within a fault handler. This issue occurs due to the lack of proper validation of user-supplied data, which can result in memory access past the end of an array. This may allow an attacker to escalate privileges and execute arbitrary…
When was CVE-2023-2008 disclosed?
CVE-2023-2008 was first published in the National Vulnerability Database on April 14, 2023, with the most recent update on August 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-2008 actively exploited?
CVE-2023-2008 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 39.1% of all scored CVEs.
What is the CVSS score of CVE-2023-2008?
CVE-2023-2008 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2023-2008?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-2008, 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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