CVE-2022-3176

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-09-17. 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: 0.3%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

There exists a use-after-free in io_uring in the Linux kernel. Signalfd_poll() and binder_poll() use a waitqueue whose lifetime is the current task. It will send a POLLFREE notification to all waiters before the queue is freed. Unfortunately, the io_uring poll doesn't handle POLLFREE. This allows a use-after-free to occur if a signalfd or binder fd is polled with io_uring poll, and the waitqueue gets freed. We recommend upgrading past commit fc78b2fc21f10c4c9c4d5d659a685710ffa63659

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100CISA 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
Severity78% × 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
20th
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

September 16, 2022

Last Modified

November 21, 2024

References (10)

Patch Availability(7)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-modules-extra-gkeop-5.15 (5.15.0.1004.6) @ jammy2026-05-25ubuntu
ubuntulinux-headers-azure-fde (5.4.0.1092.97+cvm1.32) @ focal2026-05-25ubuntu
ubuntulinux-headers-5.4.0-1086-aws (5.4.0-1086.93~18.04.1) @ bionic2026-05-25ubuntu
ubuntulinux-intel-iotg-headers-5.15.0-1017 (5.15.0-1017.22) @ jammy2026-05-25ubuntu
ubuntulinux-image-unsigned-5.15.0-1015-ibm (5.15.0-1015.17) @ jammy2026-05-25ubuntu
ubuntulinux-image-lowlatency (5.4.0.128.129) @ focal2026-05-25ubuntu
ubuntulinux-image-raspi2-hwe-18.04 (5.4.0.1071.104) @ focal2026-05-25ubuntu

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

(5 across 5 ecosystems)
Debian:10(1)
PackageVulnerable rangeFixed inDependents
linux-5.105.10.136-1~deb10u1, 5.10.136-1~deb10u2, 5.10.136-1~deb10u35.10.149-2~deb10u1—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (20 versions)5.10.149-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux—5.17.3-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—5.17.3-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—5.17.3-1—

Weakness Classification(1)

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

All Vendor Advisories

(7)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 6× in last 7d / 24× 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 179 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2022-3176?
CVE-2022-3176 is a high vulnerability published on September 16, 2022. There exists a use-after-free in iouring in the Linux kernel. Signalfdpoll() and binderpoll() use a waitqueue whose lifetime is the current task. It will send a POLLFREE notification to all waiters before the queue is freed. Unfortunately, the iouring poll doesn't handle POLLFREE. This allows a…
When was CVE-2022-3176 disclosed?
CVE-2022-3176 was first published on September 16, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-3176 actively exploited?
CVE-2022-3176 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (20th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2022-3176?
CVE-2022-3176 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2022-3176?
A fix for CVE-2022-3176 is available: update to the fixed version the vendor names in its advisory.

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