CVE-2026-46129

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-28. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: 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() error path

When kobject_init_and_add() fails, the call chain is:

create_space_info() -> btrfs_sysfs_add_space_info_type() -> kobject_init_and_add() -> failure -> kobject_put(&space_info->kobj) -> space_info_release() -> kfree(space_info)

Then control returns to create_space_info():

btrfs_sysfs_add_space_info_type() returns error -> goto out_free -> kfree(space_info)

This causes a double free.

Keep the direct kfree(space_info) for the earlier failure path, but after btrfs_sysfs_add_space_info_type() has called kobject_put(), let the kobject release callback handle the cleanup.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
3.6%
KEV
Not listed

Published

May 28, 2026

Last Modified

June 24, 2026

Advisory Details (6)

Auto-updated Jun 3, 2026
No patch confirmed yet.
generic

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

https://git.kernel.org/stable/c/f414b3abbba59ef379a2b3c31f2bdd9358ed5e53
generic

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

https://git.kernel.org/stable/c/dd6ade0fdd59218d71a981ae7c937a304e49209c
generic

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

https://git.kernel.org/stable/c/c2670ec4aa49ca226bce9776601e0da37502be07
generic

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

https://git.kernel.org/stable/c/ae6d6e31ceb72b7697c28a528e4923c08e3c2ef5
generic

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

https://git.kernel.org/stable/c/9a060970fd7b5e1c561e4ce73cb9949e4269a738
generic

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

https://git.kernel.org/stable/c/3f487be81292702a59ea9dbc4088b3360a50e837

Vendor Advisories for CVE-2026-46129(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 / 90× 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 201 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-46129?
CVE-2026-46129 is a high vulnerability published on May 28, 2026. In the Linux kernel, the following vulnerability has been resolved: btrfs: fix double free in createspaceinfo() error path When kobjectinitand_add() fails, the call chain is: createspaceinfo() -> btrfssysfsaddspaceinfo_type() -> kobjectinitand_add() -> failure -> kobjectput(&spaceinfo->kobj) ->…
When was CVE-2026-46129 disclosed?
CVE-2026-46129 was first published in the National Vulnerability Database on May 28, 2026, with the most recent update on June 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46129 actively exploited?
CVE-2026-46129 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-46129?
CVE-2026-46129 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-46129?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46129, 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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