CVE-2026-46322

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-09. the CNA's CVSS baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — 4 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

A fix is available — apply it.

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(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity71% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

June 9, 2026

Last Modified

August 5, 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.

Patch Availability(9)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-09-14ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-09-14ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-09-14ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-09-14ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-09-14ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-09-14ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-09-14ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-14ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-09-14ubuntu

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

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (54 versions)5.10.259-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.174-1~deb11u1 (20 versions)6.1.176-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)6.12.94-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (141 versions)7.0.12-1—

Additional Vendor Advisories

(9)

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 9× in last 7d / 50× 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 312 total refreshes for this CVE.

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

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 August 5, 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 0% probability of exploitation in the next 30 days, which ranks it in the top 97.1% of all scored CVEs.
What is the CVSS score of CVE-2026-46322?
CVE-2026-46322 has a CVSS v4.0 base score of 7.1 (CNA self-assessment; NVD's own analysis pending).
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.

Dependency Blast Radius

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