CVE-2026-46026

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-05-27. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 0

A fix is available — apply it.

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

net: qrtr: ns: Limit the maximum number of lookups

Current code does no bound checking on the number of lookups a client can perform. Though the code restricts the lookups to local clients, there is still a possibility of a malicious local client sending a flood of NEW_LOOKUP messages over the same socket.

Fix this issue by limiting the maximum number of lookups to 64 globally. Since the nameserver allows only atmost one local observer, this global lookup count will ensure that the lookups stay within the limit.

Note that, limit of 64 is chosen based on the current platform requirements. If requirement changes in the future, this limit can be increased.

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
2.8%
KEV
Not listed

Published

May 27, 2026

Last Modified

June 19, 2026

Advisory Details (5)

Auto-updated Jun 16, 2026
No patch confirmed yet.
generic

net: qrtr: ns: Limit the maximum number of lookups - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/76adf8f69b0bb3ab20be7c58f5d555027332d113
generic

net: qrtr: ns: Limit the maximum number of lookups - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5640227d9a21c6a8be249a10677b832e7f40dc55
generic

net: qrtr: ns: Limit the maximum number of lookups - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2b930bc77e00cb27e1d6e1d497b3b596283465ef
generic

net: qrtr: ns: Limit the maximum number of lookups - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/20855cef7e659ef84ac73251256fa530819b2346
generic

net: qrtr: ns: Limit the maximum number of lookups - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0dbec101a7076e9b1e4bd1876f7cf07c56ff4ce3

Vendor Advisories for CVE-2026-46026(2)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-27.27) @ resolute2026-07-11ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1008.8) @ resolute2026-07-11ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1014.14) @ resolute2026-07-11ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1013.13) @ resolute2026-07-11ubuntu

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.

Additional Vendor Advisories

(4)

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 / 65× 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 106 total refreshes for this CVE.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 02:00 UTCEPSS rescore
  3. 2026-07-13 22:30 UTCEPSS rescore
  4. 2026-07-13 06:13 UTCEPSS rescore
  5. 2026-07-12 05:46 UTCEPSS rescore
  6. 2026-07-11 23:50 UTCEG score recompute
  7. 2026-07-11 23:50 UTCVendor advisory
  8. 2026-07-11 23:49 UTCGHSA enrichment
  9. 2026-07-11 08:27 UTCEPSS rescore
  10. 2026-07-09 19:10 UTCEPSS rescore
  11. 2026-07-08 23:58 UTCEG score recompute
  12. 2026-07-08 23:58 UTCVendor advisory
  13. 2026-07-08 23:58 UTCGHSA enrichment
  14. 2026-07-08 15:16 UTCEPSS rescore
  15. 2026-07-07 13:46 UTCEPSS rescore
  16. 2026-07-06 16:27 UTCEPSS rescore
  17. 2026-07-06 02:23 UTCEPSS rescore
  18. 2026-07-05 02:30 UTCEPSS rescore
  19. 2026-07-04 06:31 UTCEPSS rescore
  20. 2026-07-01 15:07 UTCEPSS rescore
  21. 2026-07-01 10:27 UTCEG score recompute
  22. 2026-07-01 10:27 UTCVendor advisory
  23. 2026-07-01 10:27 UTCGHSA enrichment
  24. 2026-06-30 23:22 UTCEPSS rescore
  25. 2026-06-29 19:49 UTCEG score recompute
Show 75 more
  1. 2026-06-29 19:49 UTCVendor advisory
  2. 2026-06-29 19:49 UTCGHSA enrichment
  3. 2026-06-29 14:06 UTCEPSS rescore
  4. 2026-06-29 14:06 UTCEPSS rescore
  5. 2026-06-28 20:59 UTCEG score recompute
  6. 2026-06-28 20:59 UTCVendor advisory
  7. 2026-06-28 20:59 UTCGHSA enrichment
  8. 2026-06-28 14:07 UTCEPSS rescore
  9. 2026-06-28 04:56 UTCEPSS rescore
  10. 2026-06-28 04:56 UTCEPSS rescore
  11. 2026-06-27 20:40 UTCEG score recompute
  12. 2026-06-27 20:40 UTCVendor advisory
  13. 2026-06-27 20:40 UTCGHSA enrichment
  14. 2026-06-27 03:08 UTCEPSS rescore
  15. 2026-06-26 22:11 UTCEG score recompute
  16. 2026-06-26 22:11 UTCVendor advisory
  17. 2026-06-26 22:11 UTCGHSA enrichment
  18. 2026-06-25 23:43 UTCEG score recompute
  19. 2026-06-25 23:43 UTCVendor advisory
  20. 2026-06-25 23:43 UTCGHSA enrichment
  21. 2026-06-25 13:49 UTCEPSS rescore
  22. 2026-06-25 01:17 UTCEG score recompute▲ 5.50
  23. 2026-06-25 01:17 UTCVendor advisory
  24. 2026-06-25 01:17 UTCGHSA enrichment
  25. 2026-06-24 14:05 UTCEPSS rescore
  26. 2026-06-23 21:33 UTCEPSS rescore
  27. 2026-06-23 21:33 UTCEPSS rescore
  28. 2026-06-22 14:25 UTCEPSS rescore
  29. 2026-06-22 14:25 UTCEPSS rescore
  30. 2026-06-21 14:56 UTCEPSS rescore
  31. 2026-06-21 14:56 UTCEPSS rescore
  32. 2026-06-21 01:59 UTCEPSS rescore
  33. 2026-06-21 01:59 UTCEPSS rescore
  34. 2026-06-19 19:26 UTCEPSS rescore
  35. 2026-06-19 19:26 UTCEPSS rescore
  36. 2026-06-18 17:52 UTCEPSS rescore
  37. 2026-06-18 17:52 UTCEPSS rescore
  38. 2026-06-17 17:53 UTCEPSS rescore
  39. 2026-06-16 17:52 UTCEPSS rescore
  40. 2026-06-16 16:16 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
  41. 2026-06-16 03:21 UTCVendor advisory
  42. 2026-06-16 03:21 UTCGHSA enrichment
  43. 2026-06-15 17:49 UTCEPSS rescore
  44. 2026-06-14 23:28 UTCMITRE cvelistV5
  45. 2026-06-13 23:00 UTCEPSS rescore
  46. 2026-06-13 03:00 UTCVendor advisory
  47. 2026-06-13 03:00 UTCGHSA enrichment
  48. 2026-06-12 23:12 UTCEPSS rescore
  49. 2026-06-12 23:12 UTCEPSS rescore
  50. 2026-06-11 14:00 UTCEPSS rescore
  51. 2026-06-10 22:18 UTCEPSS rescore
  52. 2026-06-10 13:22 UTCEPSS rescore
  53. 2026-06-10 13:22 UTCEPSS rescore
  54. 2026-06-10 02:38 UTCGHSA enrichment
  55. 2026-06-08 14:17 UTCEPSS rescore
  56. 2026-06-08 14:17 UTCEPSS rescore
  57. 2026-06-07 15:25 UTCEPSS rescore
  58. 2026-06-07 15:25 UTCEPSS rescore
  59. 2026-06-07 02:17 UTCGHSA enrichment
  60. 2026-06-06 13:47 UTCEPSS rescore
  61. 2026-06-06 13:47 UTCEPSS rescore
  62. 2026-06-05 22:47 UTCEPSS rescore
  63. 2026-06-05 06:10 UTCEPSS rescore
  64. 2026-06-05 06:10 UTCEPSS rescore
  65. 2026-06-04 13:12 UTCEPSS rescore
  66. 2026-06-04 13:12 UTCEPSS rescore
  67. 2026-06-04 01:56 UTCGHSA enrichment
  68. 2026-06-02 20:13 UTCEPSS rescore
  69. 2026-06-01 13:52 UTCEPSS rescore
  70. 2026-06-01 13:52 UTCEPSS rescore
  71. 2026-06-01 01:35 UTCEG score recompute
  72. 2026-06-01 01:34 UTCGHSA enrichment
  73. 2026-05-31 22:30 UTCEPSS rescore
  74. 2026-05-31 22:30 UTCEPSS rescore
  75. 2026-05-31 00:16 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-46026?
CVE-2026-46026 is a medium vulnerability published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: net: qrtr: ns: Limit the maximum number of lookups Current code does no bound checking on the number of lookups a client can perform. Though the code restricts the lookups to local clients, there is still a possibility of a…
When was CVE-2026-46026 disclosed?
CVE-2026-46026 was first published in the National Vulnerability Database on May 27, 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-2026-46026 actively exploited?
CVE-2026-46026 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-46026?
CVE-2026-46026 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-46026?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46026, 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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