CVE-2023-4611

HIGHNVD 6.37.0▲
EchelonGraph scoreMEDIUM confidence

Score 7.0 from GitHub Security Advisory published 2023-08-30. NVD baseline CVSS 6.3; sources differ by 0.7.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 6.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A use-after-free flaw was found in mm/mempolicy.c in the memory management subsystem in the Linux Kernel. This issue is caused by a race between mbind() and VMA-locked page fault, and may allow a local attacker to crash the system or lead to a kernel information leak.

CVSS v3
6.3
EG Score
7.0HIGHmedium confidence
EG Risk
32
EG Risk 32/100CISA SSVC

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
Severity70% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
17th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 29, 2023

Last Modified

September 11, 2026

Advisory Details (3)

Auto-updated Sep 11, 2026
Patch available. Sources: redhat.
generic

Patch "mm/mempolicy: Take VMA lock before replacing policy" has been added to the 6.4-stable tree — Linux Stable Commits

https://www.spinics.net/lists/stable-commits/msg310136.html
redhat

2227244 – (CVE-2023-4611) CVE-2023-4611 kernel: Use after free race between mbind() and VMA-locked page fault

https://bugzilla.redhat.com/show_bug.cgi?id=2227244
redhat Patch Available

CVE-2023-4611 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2023-4611

Vendor Advisories for CVE-2023-4611(1)

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

Affected Packages

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—6.4.11-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—6.4.11-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 33× 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 191 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-4611?
CVE-2023-4611 is a high vulnerability published on August 29, 2023. A use-after-free flaw was found in mm/mempolicy.c in the memory management subsystem in the Linux Kernel. This issue is caused by a race between mbind() and VMA-locked page fault, and may allow a local attacker to crash the system or lead to a kernel information leak.
When was CVE-2023-4611 disclosed?
CVE-2023-4611 was first published on August 29, 2023, with the most recent update on September 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-4611 actively exploited?
CVE-2023-4611 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (17th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-4611?
CVE-2023-4611 has a CVSS v3 base score of 6.3 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.0 (HIGH).
How do I remediate CVE-2023-4611?
A fix for CVE-2023-4611 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2023-4611 are linked in the Vendor Advisories panel on this page.

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