CVE-2026-46322

HIGHPre-NVD 7.17.1—
EchelonGraph scoreHIGH confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-09. a secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.1Exploit: 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:

tun: free page on build_skb failure in tun_xdp_one()

When build_skb() fails in tun_xdp_one(), the function sets ret to -ENOMEM and jumps to the out label, which returns without freeing the page that vhost_net_build_xdp() allocated for the frame. As with the short-frame rejection path, tun_sendmsg() discards the per-buffer error and still returns total_len, so vhost_tx_batch() takes the success path and never frees the page. Each build_skb() failure in a batch leaks one page-frag chunk.

Free the page before taking the error path, matching the put_page() the other error exits of tun_xdp_one() already perform.

CVSS v3
7.1
EG Score
7.1(high)
EPSS
2.9%
KEV
Not listed

Published

June 9, 2026

Last Modified

June 19, 2026

Advisory Details (4)

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

tun: free page on build_skb failure in tun_xdp_one() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d16e38fac09a47bfcf98c1ad65a1bb53f94540f5
generic

tun: free page on build_skb failure in tun_xdp_one() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/aa8963fdce667a42fb7f0bdd2909fadcab02f9a8
generic

tun: free page on build_skb failure in tun_xdp_one() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/aa308e9dbb9acb17cacdbbce9e4504f69bac8385
generic

tun: free page on build_skb failure in tun_xdp_one() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4fefc6156a162a9f50035c12091a5e5130c82c6e

Vendor Advisories for CVE-2026-46322(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 39× in last 7d / 139× 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 139 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-46322?
CVE-2026-46322 is a high vulnerability published on June 9, 2026. In the Linux kernel, the following vulnerability has been resolved: tun: free page on buildskb failure in tunxdp_one() When buildskb() fails in tunxdp_one(), the function sets ret to -ENOMEM and jumps to the out label, which returns without freeing the page that vhostnetbuild_xdp() allocated for…
When was CVE-2026-46322 disclosed?
CVE-2026-46322 was first published in the National Vulnerability Database on June 9, 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-2026-46322 actively exploited?
CVE-2026-46322 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-46322?
CVE-2026-46322 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-46322?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46322, 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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