CVE-2026-53286

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-26. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
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%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

idpf: fix double free and use-after-free in aux device error paths

When auxiliary_device_add() fails in idpf_plug_vport_aux_dev() or idpf_plug_core_aux_dev(), the err_aux_dev_add label calls auxiliary_device_uninit() and falls through to err_aux_dev_init. The uninit call will trigger put_device(), which invokes the release callback (idpf_vport_adev_release / idpf_core_adev_release) that frees iadev. The fall-through then reads adev->id from the freed iadev for ida_free() and double-frees iadev with kfree().

Free the IDA slot and clear the back-pointer before uninit, while adev is still valid, then return immediately.

Commit 65637c3a1811 ("idpf: fix UAF in RDMA core aux dev deinitialization") fixed the same use-after-free in the matching unplug path in this file but missed both probe error paths.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

June 26, 2026

Last Modified

July 8, 2026

Advisory Details (3)

Auto-updated Jul 8, 2026
No patch confirmed yet.
generic

idpf: fix double free and use-after-free in aux device error paths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f319de7074e1728a9f9ff7134257360c694ec2b2
generic

idpf: fix double free and use-after-free in aux device error paths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/722b91d5086a249318c9d0e2b36aeac80ba8c808
generic

idpf: fix double free and use-after-free in aux device error paths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6c77b9510829a424d1b74409b7db9456e3522871

Vendor Advisories for CVE-2026-53286(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 / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-07-26ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-07-26ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-07-26ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-07-26ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-07-26ubuntu

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.

Weakness Classification(1)

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

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 13× in last 7d / 64× 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.

  1. 2026-07-28 05:19 UTCGHSA enrichment
  2. 2026-07-27 17:06 UTCEG score recompute
  3. 2026-07-27 17:06 UTCGHSA enrichment
  4. 2026-07-27 02:45 UTCEG score recompute
  5. 2026-07-27 02:45 UTCGHSA enrichment
  6. 2026-07-26 14:31 UTCEG score recompute
  7. 2026-07-26 14:31 UTCVendor advisory
  8. 2026-07-26 14:31 UTCGHSA enrichment
  9. 2026-07-24 14:18 UTCEPSS rescore
  10. 2026-07-23 14:18 UTCEPSS rescore
  11. 2026-07-23 03:19 UTCEG score recompute
  12. 2026-07-22 14:08 UTCEPSS rescore
  13. 2026-07-21 15:25 UTCEPSS rescore
  14. 2026-07-20 17:08 UTCEPSS rescore
  15. 2026-07-19 14:31 UTCEPSS rescore
  16. 2026-07-19 14:31 UTCEPSS rescore
  17. 2026-07-18 10:04 UTCEPSS rescore
  18. 2026-07-16 21:23 UTCGHSA enrichment
  19. 2026-07-16 17:03 UTCEPSS rescore
  20. 2026-07-16 09:09 UTCGHSA enrichment
  21. 2026-07-15 20:56 UTCGHSA enrichment
  22. 2026-07-15 16:57 UTCEPSS rescore
  23. 2026-07-15 16:57 UTCEPSS rescore
  24. 2026-07-15 08:38 UTCGHSA enrichment
  25. 2026-07-14 20:22 UTCGHSA enrichment
Show 43 more
  1. 2026-07-14 08:09 UTCGHSA enrichment
  2. 2026-07-13 22:31 UTCEPSS rescore
  3. 2026-07-13 19:28 UTCGHSA enrichment
  4. 2026-07-13 07:15 UTCGHSA enrichment
  5. 2026-07-13 06:13 UTCEPSS rescore
  6. 2026-07-13 06:13 UTCEPSS rescore
  7. 2026-07-12 19:01 UTCGHSA enrichment
  8. 2026-07-12 06:48 UTCGHSA enrichment
  9. 2026-07-12 05:46 UTCEPSS rescore
  10. 2026-07-11 18:35 UTCGHSA enrichment
  11. 2026-07-11 06:23 UTCGHSA enrichment
  12. 2026-07-10 18:09 UTCGHSA enrichment
  13. 2026-07-10 05:53 UTCGHSA enrichment
  14. 2026-07-09 19:10 UTCEPSS rescore
  15. 2026-07-09 19:10 UTCEPSS rescore
  16. 2026-07-09 17:40 UTCGHSA enrichment
  17. 2026-07-09 05:23 UTCGHSA enrichment
  18. 2026-07-08 17:11 UTCGHSA enrichment
  19. 2026-07-08 15:16 UTCEPSS rescore
  20. 2026-07-08 15:16 UTCEPSS rescore
  21. 2026-07-08 04:59 UTCEG score recompute▲ 7.80
  22. 2026-07-08 04:58 UTCGHSA enrichment
  23. 2026-07-08 04:32 UTCNVD updateCVSS v3 → 7.8 · severity → HIGH
  24. 2026-07-07 13:46 UTCEPSS rescore
  25. 2026-07-07 13:46 UTCEPSS rescore
  26. 2026-07-06 16:27 UTCEPSS rescore
  27. 2026-07-06 16:27 UTCEPSS rescore
  28. 2026-07-05 09:12 UTCGHSA enrichment
  29. 2026-07-05 02:31 UTCEPSS rescore
  30. 2026-07-05 02:30 UTCEPSS rescore
  31. 2026-07-04 06:31 UTCEPSS rescore
  32. 2026-07-04 06:31 UTCEPSS rescore
  33. 2026-07-02 13:13 UTCGHSA enrichment
  34. 2026-07-01 15:07 UTCEPSS rescore
  35. 2026-06-30 23:22 UTCEPSS rescore
  36. 2026-06-29 17:25 UTCGHSA enrichment
  37. 2026-06-29 14:06 UTCEPSS rescore
  38. 2026-06-29 14:06 UTCEPSS rescore
  39. 2026-06-28 14:07 UTCEPSS rescore
  40. 2026-06-28 04:56 UTCEPSS rescore
  41. 2026-06-28 04:56 UTCEPSS rescore
  42. 2026-06-26 21:40 UTCEG score recompute
  43. 2026-06-26 21:40 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-53286?
CVE-2026-53286 is a high vulnerability published on June 26, 2026. In the Linux kernel, the following vulnerability has been resolved: idpf: fix double free and use-after-free in aux device error paths When auxiliarydeviceadd() fails in idpfplugvportauxdev() or idpfplugcoreauxdev(), the errauxdev_add label calls auxiliarydeviceuninit() and falls through to…
When was CVE-2026-53286 disclosed?
CVE-2026-53286 was first published in the National Vulnerability Database on June 26, 2026, with the most recent update on July 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53286 actively exploited?
CVE-2026-53286 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 97.3% of all scored CVEs.
What is the CVSS score of CVE-2026-53286?
CVE-2026-53286 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-53286?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53286, 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

Explore the affected products and dependency analysis for CVE-2026-53286

Explore →

Is Your Infrastructure Affected by CVE-2026-53286?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs