CVE-2026-46120

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-28. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — 5 sources updated this week
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: None knownExposed: 0

A fix is available — apply it.

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

ip6_gre: Use cached t->net in ip6erspan_changelink().

After commit 5e72ce3e3980 ("net: ipv6: Use link netns in newlink() of rtnl_link_ops"), ip6erspan_newlink() correctly resolves the per-netns ip6gre hash via link_net. ip6erspan_changelink() was not converted in that series and still uses dev_net(dev), which diverges from the device's creation netns after IFLA_NET_NS_FD migration.

This re-inserts the tunnel into the wrong per-netns hash. The original netns keeps a stale entry. When that netns is later destroyed, ip6gre_exit_rtnl_net() walks the stale entry, producing a slab-use-after-free reported by KASAN, followed by a kernel BUG at net/core/dev.c (LIST_POISON1) in unregister_netdevice_many_notify().

Reachable from an unprivileged user namespace (unshare --user --map-root-user --net).

ip6gre_changelink() earlier in the same file already uses the cached t->net; only ip6erspan_changelink() has the wrong shape.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

May 28, 2026

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Jun 4, 2026
No patch confirmed yet.
generic

ip6_gre: Use cached t->net in ip6erspan_changelink(). - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/eca62bb0569de4d43a4dac06a2092a9d4ca1d702
generic

ip6_gre: Use cached t->net in ip6erspan_changelink(). - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e70cfb40c3a99b232cd42c6a6a10f0d8e039dc82
generic

ip6_gre: Use cached t->net in ip6erspan_changelink(). - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cf7fc624329e76c6394653d12353e1d033adea91
generic

ip6_gre: Use cached t->net in ip6erspan_changelink(). - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7bd0f2b162b426b343a114e1b329f0d8d14fdc6e
generic

ip6_gre: Use cached t->net in ip6erspan_changelink(). - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/311fdd26eb4443d43b909cc67a10f3a5fd1b21b2
generic

ip6_gre: Use cached t->net in ip6erspan_changelink(). - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1d324c2f43f70c965f25c58cc3611c779adbe47e
generic

ip6_gre: Use cached t->net in ip6erspan_changelink(). - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0fcf6731706f73494245a9c0d64f93bebf95bb51
generic

ip6_gre: Use cached t->net in ip6erspan_changelink(). - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/01b71ff2857d3598337de11e7840a8e3ff21553c

Vendor Advisories for CVE-2026-46120(8)

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

Patch Availability(31)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-09-14ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-09-14ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-09-14ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-09-14ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-09-14ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-09-14ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-09-14ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1106.110~20.04.1) @ focal2026-09-14ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-09-14ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-09-14ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-09-14ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-09-14ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-09-14ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-09-14ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-09-14ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-09-14ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-09-14ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-09-14ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-09-14ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-09-14ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-09-14ubuntu
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 (5.15.0.1112.122~20.04.1) @ focal2026-09-14ubuntu
redhatkernel-0:4.18.0-305.206.1.el8_42026-09-09redhat
redhatkernel-0:6.12.0-55.102.1.el10_02026-09-02redhat
redhatkernel-0:6.12.0-211.50.1.el10_22026-09-01redhat
redhatkernel-0:5.14.0-687.41.1.el9_82026-08-20redhat
redhatkernel-rt-0:4.18.0-553.157.1.rt7.498.el8_102026-08-20redhat
redhatkernel-0:4.18.0-553.157.1.el8_102026-08-20redhat
linuxKernel @ 5.10.258—osv

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 ... 6.12.88-1~bpo12+1 (21 versions)6.12.88-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.7-1~bpo13+1 (136 versions)7.0.7-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(18)

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 10× in last 7d / 41× 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 291 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-46120?
CVE-2026-46120 is a high vulnerability published on May 28, 2026. In the Linux kernel, the following vulnerability has been resolved: ip6gre: Use cached t->net in ip6erspanchangelink(). After commit 5e72ce3e3980 ("net: ipv6: Use link netns in newlink() of rtnllinkops"), ip6erspan_newlink() correctly resolves the per-netns ip6gre hash via linknet.…
When was CVE-2026-46120 disclosed?
CVE-2026-46120 was first published in the National Vulnerability Database on May 28, 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-2026-46120 actively exploited?
CVE-2026-46120 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 97.4% of all scored CVEs.
What is the CVSS score of CVE-2026-46120?
CVE-2026-46120 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-46120?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46120, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-46120

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