CVE-2026-53010

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-24. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.8Exploit: 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:

ksmbd: fix use-after-free in smb2_open during durable reconnect

In smb2_open, the call to ksmbd_put_durable_fd(fp) drops the reference to the durable file descriptor early during the durable reconnect process. If an error occurs subsequently (eg, ksmbd_iov_pin_rsp fails) or a scavenger accesses the file, it leads to a use-after-free when accessing fp properties (eg fp->create_time).

Move the single put to the end of the function below err_out2 so fp stays valid until smb2_open returns.

CVSS v3
9.8
EG Score
9.8(high)
EPSS
35.0%
KEV
Not listed

Published

June 24, 2026

Last Modified

June 28, 2026

Advisory Details (3)

Auto-updated Jun 28, 2026
No patch confirmed yet.
generic

ksmbd: fix use-after-free in smb2_open during durable reconnect - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ce2e164c1c51c3f7813b80f8c926836e896bcbb3
generic

ksmbd: fix use-after-free in smb2_open during durable reconnect - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/97a0cd55283b4e63fd92804da91c8d9896adcad9
generic

ksmbd: fix use-after-free in smb2_open during durable reconnect - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1baff47b81f94f9231c91236aa511420d0e266b9

Vendor Advisories for CVE-2026-53010(2)

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

Data Freshness Timeline

(refreshed 83× in last 7d / 95× 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.

  1. 2026-07-06 23:56 UTCEG score recompute
  2. 2026-07-06 23:56 UTCGHSA enrichment
  3. 2026-07-06 19:52 UTCEG score recompute
  4. 2026-07-06 19:51 UTCGHSA enrichment
  5. 2026-07-06 16:27 UTCEPSS rescore
  6. 2026-07-06 16:27 UTCEPSS rescore
  7. 2026-07-06 15:31 UTCEG score recompute
  8. 2026-07-06 15:31 UTCGHSA enrichment
  9. 2026-07-06 11:26 UTCEG score recompute
  10. 2026-07-06 11:25 UTCGHSA enrichment
  11. 2026-07-06 07:20 UTCEG score recompute
  12. 2026-07-06 07:20 UTCGHSA enrichment
  13. 2026-07-06 03:15 UTCEG score recompute
  14. 2026-07-06 03:15 UTCGHSA enrichment
  15. 2026-07-06 02:23 UTCEPSS rescore
  16. 2026-07-06 02:23 UTCEPSS rescore
  17. 2026-07-05 23:04 UTCEG score recompute
  18. 2026-07-05 23:04 UTCGHSA enrichment
  19. 2026-07-05 18:58 UTCEG score recompute
  20. 2026-07-05 18:58 UTCGHSA enrichment
  21. 2026-07-05 14:54 UTCEG score recompute
  22. 2026-07-05 14:54 UTCGHSA enrichment
  23. 2026-07-05 10:47 UTCEG score recompute
  24. 2026-07-05 10:47 UTCGHSA enrichment
  25. 2026-07-05 06:41 UTCEG score recompute
Show 70 more
  1. 2026-07-05 06:41 UTCGHSA enrichment
  2. 2026-07-05 02:34 UTCEG score recompute
  3. 2026-07-05 02:34 UTCGHSA enrichment
  4. 2026-07-05 02:31 UTCEPSS rescore
  5. 2026-07-05 02:30 UTCEPSS rescore
  6. 2026-07-04 22:28 UTCEG score recompute
  7. 2026-07-04 22:28 UTCGHSA enrichment
  8. 2026-07-04 18:24 UTCEG score recompute
  9. 2026-07-04 18:24 UTCGHSA enrichment
  10. 2026-07-04 14:19 UTCEG score recompute
  11. 2026-07-04 14:19 UTCGHSA enrichment
  12. 2026-07-04 10:15 UTCEG score recompute
  13. 2026-07-04 10:15 UTCGHSA enrichment
  14. 2026-07-04 06:31 UTCEPSS rescore
  15. 2026-07-04 06:10 UTCEG score recompute
  16. 2026-07-04 06:10 UTCGHSA enrichment
  17. 2026-07-04 02:04 UTCEG score recompute
  18. 2026-07-04 02:04 UTCGHSA enrichment
  19. 2026-07-03 21:57 UTCEG score recompute
  20. 2026-07-03 21:57 UTCGHSA enrichment
  21. 2026-07-03 17:52 UTCEG score recompute
  22. 2026-07-03 17:52 UTCGHSA enrichment
  23. 2026-07-03 13:46 UTCEG score recompute
  24. 2026-07-03 13:46 UTCGHSA enrichment
  25. 2026-07-03 09:42 UTCEG score recompute
  26. 2026-07-03 09:42 UTCGHSA enrichment
  27. 2026-07-03 05:37 UTCEG score recompute
  28. 2026-07-03 05:37 UTCGHSA enrichment
  29. 2026-07-03 01:32 UTCEG score recompute
  30. 2026-07-03 01:31 UTCGHSA enrichment
  31. 2026-07-02 21:26 UTCEG score recompute
  32. 2026-07-02 21:26 UTCGHSA enrichment
  33. 2026-07-02 17:22 UTCEG score recompute
  34. 2026-07-02 17:22 UTCGHSA enrichment
  35. 2026-07-02 13:17 UTCEG score recompute
  36. 2026-07-02 13:17 UTCGHSA enrichment
  37. 2026-07-02 09:13 UTCEG score recompute
  38. 2026-07-02 09:13 UTCGHSA enrichment
  39. 2026-07-02 05:09 UTCEG score recompute
  40. 2026-07-02 05:08 UTCGHSA enrichment
  41. 2026-07-02 01:04 UTCEG score recompute
  42. 2026-07-02 01:04 UTCGHSA enrichment
  43. 2026-07-01 20:59 UTCEG score recompute
  44. 2026-07-01 20:59 UTCGHSA enrichment
  45. 2026-07-01 16:54 UTCEG score recompute
  46. 2026-07-01 16:54 UTCGHSA enrichment
  47. 2026-07-01 15:07 UTCEPSS rescore
  48. 2026-07-01 12:50 UTCEG score recompute
  49. 2026-07-01 12:49 UTCGHSA enrichment
  50. 2026-07-01 08:43 UTCEG score recompute
  51. 2026-07-01 08:43 UTCGHSA enrichment
  52. 2026-07-01 04:38 UTCEG score recompute
  53. 2026-07-01 04:38 UTCGHSA enrichment
  54. 2026-07-01 00:30 UTCEG score recompute
  55. 2026-07-01 00:30 UTCGHSA enrichment
  56. 2026-06-30 23:22 UTCEPSS rescore
  57. 2026-06-30 20:25 UTCEG score recompute▲ 9.80
  58. 2026-06-30 20:25 UTCGHSA enrichment
  59. 2026-06-29 14:06 UTCEPSS rescore
  60. 2026-06-29 14:06 UTCEPSS rescore
  61. 2026-06-28 14:07 UTCEPSS rescore
  62. 2026-06-28 07:52 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  63. 2026-06-28 04:56 UTCEPSS rescore
  64. 2026-06-28 04:56 UTCEPSS rescore
  65. 2026-06-27 19:24 UTCEG score recompute
  66. 2026-06-27 19:24 UTCGHSA enrichment
  67. 2026-06-27 03:08 UTCEPSS rescore
  68. 2026-06-25 13:49 UTCEPSS rescore
  69. 2026-06-24 18:23 UTCEG score recompute
  70. 2026-06-24 18:02 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-53010?
CVE-2026-53010 is a critical vulnerability published on June 24, 2026. In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb2_open during durable reconnect In smb2open, the call to ksmbdputdurablefd(fp) drops the reference to the durable file descriptor early during the durable reconnect process. If an error occurs…
When was CVE-2026-53010 disclosed?
CVE-2026-53010 was first published in the National Vulnerability Database on June 24, 2026, with the most recent update on June 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53010 actively exploited?
CVE-2026-53010 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 35.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-53010?
CVE-2026-53010 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-53010?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53010, 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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