CVE-2026-46299

HIGHPre-NVD 7.07.0—
EchelonGraph scoreMEDIUM confidence

Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2026-06-08. 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
7.0EG
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:

hfsplus: fix held lock freed on hfsplus_fill_super()

hfsplus_fill_super() calls hfs_find_init() to initialize a search structure, which acquires tree->tree_lock. If the subsequent call to hfsplus_cat_build_key() fails, the function jumps to the out_put_root error label without releasing the lock. The later cleanup path then frees the tree data structure with the lock still held, triggering a held lock freed warning.

Fix this by adding the missing hfs_find_exit(&fd) call before jumping to the out_put_root error label. This ensures that tree->tree_lock is properly released on the error path.

The bug was originally detected on v6.13-rc1 using an experimental static analysis tool we are developing, and we have verified that the issue persists in the latest mainline kernel. The tool is specifically designed to detect memory management issues. It is currently under active development and not yet publicly available.

We confirmed the bug by runtime testing under QEMU with x86_64 defconfig, lockdep enabled, and CONFIG_HFSPLUS_FS=y. To trigger the error path, we used GDB to dynamically shrink the max_unistr_len parameter to 1 before hfsplus_asc2uni() is called. This forces hfsplus_asc2uni() to naturally return -ENAMETOOLONG, which propagates to hfsplus_cat_build_key() and exercises the faulty error path. The following warning was observed during mount:

========================= WARNING: held lock freed! 7.0.0-rc3-00016-gb4f0dd314b39 #4 Not tainted ------------------------- mount/174 is freeing memory ffff888103f92000-ffff888103f92fff, with a lock still held there! ffff888103f920b0 (&tree->tree_lock){+.+.}-{4:4}, at: hfsplus_find_init+0x154/0x1e0 2 locks held by mount/174: #0: ffff888103f960e0 (&type->s_umount_key#42/1){+.+.}-{4:4}, at: alloc_super.constprop.0+0x167/0xa40 #1: ffff888103f920b0 (&tree->tree_lock){+.+.}-{4:4}, at: hfsplus_find_init+0x154/0x1e0

stack backtrace: CPU: 2 UID: 0 PID: 174 Comm: mount Not tainted 7.0.0-rc3-00016-gb4f0dd314b39 #4 PREEMPT(lazy) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014 Call Trace: dump_stack_lvl+0x82/0xd0 debug_check_no_locks_freed+0x13a/0x180 kfree+0x16b/0x510 ? hfsplus_fill_super+0xcb4/0x18a0 hfsplus_fill_super+0xcb4/0x18a0 ? __pfx_hfsplus_fill_super+0x10/0x10 ? srso_return_thunk+0x5/0x5f ? bdev_open+0x65f/0xc30 ? srso_return_thunk+0x5/0x5f ? pointer+0x4ce/0xbf0 ? trace_contention_end+0x11c/0x150 ? __pfx_pointer+0x10/0x10 ? srso_return_thunk+0x5/0x5f ? bdev_open+0x79b/0xc30 ? srso_return_thunk+0x5/0x5f ? srso_return_thunk+0x5/0x5f ? vsnprintf+0x6da/0x1270 ? srso_return_thunk+0x5/0x5f ? __mutex_unlock_slowpath+0x157/0x740 ? __pfx_vsnprintf+0x10/0x10 ? srso_return_thunk+0x5/0x5f ? srso_return_thunk+0x5/0x5f ? mark_held_locks+0x49/0x80 ? srso_return_thunk+0x5/0x5f ? srso_return_thunk+0x5/0x5f ? irqentry_exit+0x17b/0x5e0 ? trace_irq_disable.constprop.0+0x116/0x150 ? __pfx_hfsplus_fill_super+0x10/0x10 ? __pfx_hfsplus_fill_super+0x10/0x10 get_tree_bdev_flags+0x302/0x580 ? __pfx_get_tree_bdev_flags+0x10/0x10 ? vfs_parse_fs_qstr+0x129/0x1a0 ? __pfx_vfs_parse_fs_qstr+0x3/0x10 vfs_get_tree+0x89/0x320 fc_mount+0x10/0x1d0 path_mount+0x5c5/0x21c0 ? __pfx_path_mount+0x10/0x10 ? trace_irq_enable.constprop.0+0x116/0x150 ? trace_irq_enable.constprop.0+0x116/0x150 ? srso_return_thunk+0x5/0x5f ? srso_return_thunk+0x5/0x5f ? kmem_cache_free+0x307/0x540 ? user_path_at+0x51/0x60 ? __x64_sys_mount+0x212/0x280 ? srso_return_thunk+0x5/0x5f __x64_sys_mount+0x212/0x280 ? __pfx___x64_sys_mount+0x10/0x10 ? srso_return_thunk+0x5/0x5f ? trace_irq_enable.constprop.0+0x116/0x150 ? srso_return_thunk+0x5/0x5f do_syscall_64+0x111/0x680 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ffacad55eae Code: 48 8b 0d 85 1f 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8 a5 00 00 8 RSP: 002b ---truncated---

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
1%
KEV
Not listed

Published

June 8, 2026

Last Modified

July 8, 2026

Advisory Details (5)

Auto-updated Jun 14, 2026
No patch confirmed yet.
generic

hfsplus: fix held lock freed on hfsplus_fill_super() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d309d3308de658d87c42d97e044c89a226327526
generic

hfsplus: fix held lock freed on hfsplus_fill_super() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bfbcce6a7b0552a390620d9b2c4d2bcb1825cbdc
generic

hfsplus: fix held lock freed on hfsplus_fill_super() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/90c500e4fd83fa33c09bc7ee23b6d9cc487ac733
generic

hfsplus: fix held lock freed on hfsplus_fill_super() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3ca80e3012c8be85b4f8d0d20eac8d3b17ff257e
generic

hfsplus: fix held lock freed on hfsplus_fill_super() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/041acda6d9f96006703466449c10c9a69590c8b9

Vendor Advisories for CVE-2026-46299(2)

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

Patch Availability(15)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-07-28ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-07-28ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-07-28ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-07-28ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-07-28ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-07-28ubuntu
ubuntulinux-tools-lowlatency-hwe-22.04-edge (6.8.0-136.136.2~22.04.1) @ jammy2026-07-28ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-07-28ubuntu
ubuntulinux-tools-nvidia-hwe-22.04-edge (6.8.0-1059.62~22.04.1) @ jammy2026-07-28ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-07-28ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-07-28ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-07-28ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-07-28ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-07-28ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-07-28ubuntu

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.

Additional Vendor Advisories

(15)

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 15× in last 7d / 79× 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 149 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-46299?
CVE-2026-46299 is a high vulnerability published on June 8, 2026. In the Linux kernel, the following vulnerability has been resolved: hfsplus: fix held lock freed on hfsplusfillsuper() hfsplusfillsuper() calls hfsfindinit() to initialize a search structure, which acquires tree->tree_lock. If the subsequent call to hfspluscatbuildkey() fails, the function jumps to…
When was CVE-2026-46299 disclosed?
CVE-2026-46299 was first published in the National Vulnerability Database on June 8, 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-2026-46299 actively exploited?
CVE-2026-46299 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 99.4% of all scored CVEs.
What is the CVSS score of CVE-2026-46299?
CVE-2026-46299 has a CVSS v3 base score of 7.0 (NVD).
How do I remediate CVE-2026-46299?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46299, 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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