CVE-2026-46164

HIGHPre-NVD 7.07.0—
EchelonGraph scoreMEDIUM confidence

Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2026-05-28. the CNA's CVSS baseline 7.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
7.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.0Exploit: None knownExposed: 0

A fix is available — apply it.

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

btrfs: fix double free in create_space_info_sub_group() error path

When kobject_init_and_add() fails, the call chain is:

create_space_info_sub_group() -> btrfs_sysfs_add_space_info_type() -> kobject_init_and_add() -> failure -> kobject_put(&sub_group->kobj) -> space_info_release() -> kfree(sub_group)

Then control returns to create_space_info_sub_group(), where:

btrfs_sysfs_add_space_info_type() returns error -> kfree(sub_group)

Thus, sub_group is freed twice.

Keep parent->sub_group[index] = NULL for the failure path, but after btrfs_sysfs_add_space_info_type() has called kobject_put(), let the kobject release callback handle the cleanup.

CVSS v3
7.0
EG Score
7.0(medium)
EG Risk
36(Track)
EG Risk 36/100SSVC: 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
Severity70% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

May 28, 2026

Last Modified

August 5, 2026

Advisory Details (5)

Auto-updated Jun 11, 2026
No patch confirmed yet.
generic

btrfs: fix double free in create_space_info_sub_group() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/dfd05a16b5c9d1d98b47905f37f2fccda52173d1
generic

btrfs: fix double free in create_space_info_sub_group() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d2a675f2e238ec96c8e91e2718c1f910c9c8fb21
generic

btrfs: fix double free in create_space_info_sub_group() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a7449edf96143f192606ec8647e3167e1ecbd728
generic

btrfs: fix double free in create_space_info_sub_group() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/259af6857a1b4f1e9ef8b780353f9d11c26a22bd
generic

btrfs: fix double free in create_space_info_sub_group() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/14b22be1dd844383eb03af9b1ee3b6b25d32aeaf

Vendor Advisories for CVE-2026-46164(2)

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

Patch Availability(22)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-08-25ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-08-25ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-08-25ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-25ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-25ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-25ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-08-25ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-08-25ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-08-25ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-08-25ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-08-25ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-25ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-08-25ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-25ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-aws-edge (6.8.0-1061.64~22.04.1) @ jammy2026-08-25ubuntu

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux-6.16.1.106-3~deb11u1 ... 6.1.174-1~deb11u1 (20 versions)6.1.176-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.90-1~bpo12+1 (23 versions)6.12.90-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.7-1~bpo13+1 (133 versions)7.0.7-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(22)

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 4× in last 7d / 89× 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 288 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-46164?
CVE-2026-46164 is a high vulnerability published on May 28, 2026. In the Linux kernel, the following vulnerability has been resolved: btrfs: fix double free in createspaceinfosubgroup() error path When kobjectinitand_add() fails, the call chain is: createspaceinfosubgroup() -> btrfssysfsaddspaceinfo_type() -> kobjectinitand_add() -> failure ->…
When was CVE-2026-46164 disclosed?
CVE-2026-46164 was first published in the National Vulnerability Database on May 28, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46164 actively exploited?
CVE-2026-46164 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 96.6% of all scored CVEs.
What is the CVSS score of CVE-2026-46164?
CVE-2026-46164 has a CVSS v4.0 base score of 7.0 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-46164?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46164, 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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