CVE-2026-46137

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-28. the CNA's CVSS baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

mptcp: pm: ADD_ADDR rtx: fix potential data-race

This mptcp_pm_add_timer() helper is executed as a timer callback in softirq context. To avoid any data races, the socket lock needs to be held with bh_lock_sock().

If the socket is in use, retry again soon after, similar to what is done with the keepalive timer.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity98% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

May 28, 2026

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Sep 2, 2026
No patch confirmed yet.
generic

mptcp: pm: ADD_ADDR rtx: fix potential data-race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5cd6e0ad79d2615264f63929f8b457ad97ae550d
generic

mptcp: pm: ADD_ADDR rtx: fix potential data-race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cc3c0399361efaaf7ae64262eb3f70829b1189c6
generic

mptcp: pm: ADD_ADDR rtx: fix potential data-race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2ad56e434199ca24a812bb353667aa1c3860f513
generic

mptcp: pm: ADD_ADDR rtx: fix potential data-race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6e4710d7d8782cb61af29a7e7111ddfc38b9e1a3
generic

mptcp: pm: ADD_ADDR rtx: fix potential data-race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/013dcdc1961543b9a3433466bc8c79a2f4ca75b5
generic

mptcp: pm: ADD_ADDR rtx: fix potential data-race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b35605e1f1e877038c8c9d499babbc891cdd234f
generic

mptcp: pm: ADD_ADDR rtx: fix potential data-race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/23079e0b7742ec114d3507c3e3aad01b7b69e4af
generic

mptcp: pm: ADD_ADDR rtx: fix potential data-race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d9b272a85fe6b8f993e37915311e4038c814a533

Vendor Advisories for CVE-2026-46137(2)

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

Patch Availability(30)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1013.13) @ resolute2026-08-25ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-08-25ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-25ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-08-25ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-08-25ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1106.110~20.04.1) @ focal2026-08-25ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-edge (6.8.0-1063.71~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-25ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-08-25ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-08-25ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-08-25ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-08-25ubuntu
ubuntulinux-tools-nvidia-hwe-24.04 (6.17.0-1031.31) @ noble2026-08-25ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-08-25ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-08-25ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-27.27) @ resolute2026-08-25ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-25ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-08-25ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-08-25ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-25ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-08-25ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-08-25ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-08-25ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-08-25ubuntu

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 ... 7.0.7-1~bpo13+1 (133 versions)7.0.7-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(24)

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 5× in last 7d / 174× 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 546 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-46137?
CVE-2026-46137 is a critical vulnerability published on May 28, 2026. In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADD_ADDR rtx: fix potential data-race This mptcppmadd_timer() helper is executed as a timer callback in softirq context. To avoid any data races, the socket lock needs to be held with bhlocksock(). If the socket is in…
When was CVE-2026-46137 disclosed?
CVE-2026-46137 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-2026-46137 actively exploited?
CVE-2026-46137 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 64.3% of all scored CVEs.
What is the CVSS score of CVE-2026-46137?
CVE-2026-46137 has a CVSS v4.0 base score of 9.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-46137?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46137, 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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