CVE-2026-46164

HIGHPre-NVD 7.07.0—
EchelonGraph scoreMEDIUM confidence

Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2026-05-28. a secondary CVSS source baseline 7.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.0
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.0Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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)
EPSS
3.5%
KEV
Not listed

Published

May 28, 2026

Last Modified

June 19, 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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× 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 198 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

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 June 19, 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 3.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-46164?
CVE-2026-46164 has a CVSS v3 base score of 7.0 (NVD).
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.

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