CVE-2026-74427

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-15. A secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

afs: Fix netns teardown to cancel the preallocation charger

Fix the teardown of an afs network namespace to make sure it cancels the work item that keeps the preallocated rxrpc call/conn/peer queue charged before incoming calls are disabled (i.e. listen 0).

Also, if net->live is false because the afs netns is being deleted, make afs_charge_preallocation() skip charging and make afs_rx_new_call() avoid requeuing the charger.

(This was found by AI review).

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
49
EG Risk 49/100CISA 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
Severity98% × 45%
Exploitation1% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.8%
EPSS %ILE
53rd
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). 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 15, 2026

Last Modified

August 17, 2026

Advisory Details (8)

Auto-updated Oct 5, 2026
Patch available.
generic

afs: Fix netns teardown to cancel the preallocation charger - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f5096e18b6b7fbd1c2a1942e275a51bcfdfb2ad1
generic

afs: Fix netns teardown to cancel the preallocation charger - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/eec89c5f8e1adc1de4824042ef75f62aed804153
generic

afs: Fix netns teardown to cancel the preallocation charger - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b83ecf80e28afb7b6595ba79932e77ca68a5a83d
generic

afs: Fix netns teardown to cancel the preallocation charger - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a33975ff2b6ea47b8f29956403374b1cdd057539
generic

afs: Fix netns teardown to cancel the preallocation charger - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/85d5fb80fe4f0cc836b6df83f26de204fe102ff7
generic

afs: Fix netns teardown to cancel the preallocation charger - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/63ccaf1bdf8be2330f47f9b5b233dd3fd04acbd9
generic

afs: Fix netns teardown to cancel the preallocation charger - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/59e8b7652f6cbfb62d377ead0ad553c1b4e39a7a
generic

afs: Fix netns teardown to cancel the preallocation charger - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/47694fbc9d24ab6bf210f91e8efe06a10a478064

Vendor Advisories for CVE-2026-74427(1)

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 / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-34.34) @ resolute2026-10-05ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1013.13~24.04.1) @ noble2026-10-05ubuntu
ubuntulinux-tools-oracle-edge (7.0.0-1012.12~24.04.1) @ noble2026-10-05ubuntu
ubuntulinux-tools-gke-hwe-26.04 (7.0.0-1007.8) @ resolute2026-10-05ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1035.38) @ noble2026-10-05ubuntu

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

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (55 versions)
  • every version up to 6.1.180-1: fixed in 6.1.180-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.38-1 ... 6.12.96-1 (31 versions)
  • every version up to 6.12.100-1: fixed in 6.12.100-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (160 versions)
  • every version up to 7.1.5-1: fixed in 7.1.5-1
—

All Vendor Advisories

(5)

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 55× in last 7d / 239× 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 393 total refreshes for this CVE.

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

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2026-74427?
CVE-2026-74427 is a critical vulnerability published on August 15, 2026. In the Linux kernel, the following vulnerability has been resolved: afs: Fix netns teardown to cancel the preallocation charger Fix the teardown of an afs network namespace to make sure it cancels the work item that keeps the preallocated rxrpc call/conn/peer queue charged before incoming calls are…
When was CVE-2026-74427 disclosed?
CVE-2026-74427 was first published on August 15, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74427 actively exploited?
CVE-2026-74427 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (53rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-74427?
CVE-2026-74427 has a CVSS base score of 9.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-74427?
A fix for CVE-2026-74427 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-74427 are linked in the Vendor Advisories panel on this page.

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