CVE-2026-64468

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-25. 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 weekElevated
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: Elevated riskExposed: 0

A fix is available — apply it.

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

binder: fix UAF in binder_free_transaction()

In binder_free_transaction(), the t->to_proc is read under the t->lock. However, once the t->lock is dropped, the to_proc can die in parallel. This leads to a use-after-free error when we attempt to acquire its inner lock right afterwards:

================================================================== BUG: KASAN: slab-use-after-free in _raw_spin_lock+0xe4/0x1a0 Write of size 4 at addr ffff00001125da70 by task B/672

CPU: 20 UID: 0 PID: 672 Comm: B Not tainted 7.1.0-rc6-00284-g8e65320d91cd #4 PREEMPT Hardware name: linux,dummy-virt (DT) Call trace: _raw_spin_lock+0xe4/0x1a0 binder_free_transaction+0x8c/0x320 binder_send_failed_reply+0x21c/0x2f8 binder_thread_release+0x488/0x7e0 binder_ioctl+0x12c0/0x29a0 [...]

Allocated by task 675: __kmalloc_cache_noprof+0x174/0x444 binder_open+0x118/0xb70 do_dentry_open+0x374/0x1040 vfs_open+0x58/0x3bc [...]

Freed by task 212: __kasan_slab_free+0x58/0x80 kfree+0x1a0/0x4a4 binder_proc_dec_tmpref+0x32c/0x5e0 binder_deferred_func+0xc48/0x104c process_one_work+0x53c/0xbc0 [...] ==================================================================

To prevent this, pin the target thread (t->to_thread) to guarantee the target process remains alive. Undelivered transactions without a target thread are already safe, as the target process can only be the current context in those paths.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
56(Track)
EG Risk 56/100SSVC: 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%
Exploitation40% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

July 25, 2026

Last Modified

August 17, 2026

Advisory Details (8)

Auto-updated Jul 27, 2026
No patch confirmed yet.
generic

binder: fix UAF in binder_free_transaction() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f223d27a546c1e1f48d38fd67760e78f068fe8c4
generic

binder: fix UAF in binder_free_transaction() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d45ef513eed1abebfec90c3cfb6ae50c2a4182db
generic

binder: fix UAF in binder_free_transaction() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5602a43f251c3d75312df91a422675fc00ca3dce
generic

binder: fix UAF in binder_free_transaction() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/48aeda9f8039e4a6971d1804578efde7f2c01eda
generic

binder: fix UAF in binder_free_transaction() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/45df558c543bb5543bacc8065fd7c567740781e5
generic

binder: fix UAF in binder_free_transaction() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/328ccf32acb87e8bbb1fe2b065068c574e4db2bf
generic

binder: fix UAF in binder_free_transaction() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0f15f0f6ca5df566275ce517f257af2559528b41
generic

binder: fix UAF in binder_free_transaction() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0be901ab1dcc4af59b88f2e324493bb283850167

Vendor Advisories for CVE-2026-64468(2)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-31.31) @ resolute2026-09-15ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-15ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1013.13) @ resolute2026-09-15ubuntu

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

(6 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (55 versions)5.10.262-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.177-1~deb11u1 (22 versions)6.1.180-1~deb11u1—
Debian:12(2)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (55 versions)6.1.180-1—
linux-6.12—6.12.100-1~deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.95-1~bpo12+1 (30 versions)6.12.96-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (158 versions)7.1.4-1—

All Vendor Advisories

(3)

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 28× in last 7d / 100× 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 192 total refreshes for this CVE.

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

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCaramosf/CVE-2026-64468
    First seen Aug 17, 2026

    Linux Binder binder_free_transaction() process-lifetime use-after-free (CVE-2026-64468): unprivileged PoC + x86_64 LPE. Authorised security research.

    Open source ↗

Frequently asked(5)

What is CVE-2026-64468?
CVE-2026-64468 is a high vulnerability published on July 25, 2026. In the Linux kernel, the following vulnerability has been resolved: binder: fix UAF in binderfreetransaction() In binderfreetransaction(), the t->to_proc is read under the t->lock. However, once the t->lock is dropped, the to_proc can die in parallel. This leads to a use-after-free error when we…
When was CVE-2026-64468 disclosed?
CVE-2026-64468 was first published in the National Vulnerability Database on July 25, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64468 actively exploited?
CVE-2026-64468 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 96.7% of all scored CVEs.
What is the CVSS score of CVE-2026-64468?
CVE-2026-64468 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-64468?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64468, 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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