CVE-2025-38550

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-08-16. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
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:

ipv6: mcast: Delay put pmc->idev in mld_del_delrec()

pmc->idev is still used in ip6_mc_clear_src(), so as mld_clear_delrec() does, the reference should be put after ip6_mc_clear_src() return.

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
5%
KEV
Not listed

Published

August 16, 2025

Last Modified

July 24, 2026

Advisory Details (8)

Auto-updated Jul 24, 2026
Patch available.
generic Patch Available

[SECURITY] [DLA 4328-1] linux-6.1 security update

https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
generic

ipv6: mcast: Delay put pmc->idev in mld_del_delrec() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/dcbc346f50a009d8b7f4e330f9f2e22d6442fa26
generic

ipv6: mcast: Delay put pmc->idev in mld_del_delrec() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ae3264a25a4635531264728859dbe9c659fad554
generic

ipv6: mcast: Delay put pmc->idev in mld_del_delrec() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7929d27c747eafe8fca3eecd74a334503ee4c839
generic

ipv6: mcast: Delay put pmc->idev in mld_del_delrec() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/728db00a14cacb37f36e9382ab5fad55caf890cc
generic

ipv6: mcast: Delay put pmc->idev in mld_del_delrec() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6e4eec86fe5f6b3fdbc702d1d36ac2a6e7ec0806
generic

ipv6: mcast: Delay put pmc->idev in mld_del_delrec() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5f18e0130194550dff734e155029ae734378b5ea
generic

ipv6: mcast: Delay put pmc->idev in mld_del_delrec() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1b5b413094af8d88a31b5df3fd262f6baca53841

Vendor Advisories for CVE-2025-38550(7)

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-tools-azure-lts-22.04 (5.15.0.1101.99) @ jammy2026-07-26ubuntu
ubuntulinux-tools-azure-6.14 (6.14.0-1017.17) @ plucky2026-07-26ubuntu
ubuntulinux-tools-gcp-edge (6.8.0-1047.50~22.04.2) @ jammy2026-07-26ubuntu
ubuntulinux-tools-realtime-6.8.1 (6.8.1-1041.42) @ noble2026-07-26ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-100.100+fips1) @ noble2026-07-26ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1047.50+fips1) @ noble2026-07-26ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-100.100~22.04.1) @ jammy2026-07-26ubuntu
ubuntulinux-tools-gke-64k-6.8 (6.8.0-1043.48) @ noble2026-07-26ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1046.49.1) @ noble2026-07-26ubuntu
ubuntulinux-tools-ibm-edge (6.8.0-1044.44~22.04.1) @ jammy2026-07-26ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1046.52+fips1) @ noble2026-07-26ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1046.52) @ noble2026-07-26ubuntu
ubuntulinux-tools-azure-edge (6.8.0-1051.57~22.04.1) @ jammy2026-07-26ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1023.24) @ noble2026-07-26ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1061 (5.15.0-1061.65) @ jammy2026-07-26ubuntu
ubuntulinux-virtual-6.8 (6.8.0-100.100) @ noble2026-07-26ubuntu
ubuntulinux-tools-gcp-fips-5.15 (5.15.0.1097.87) @ jammy2026-07-26ubuntu
ubuntulinux-tools-gkeop-5.15 (5.15.0.1080.79) @ jammy2026-07-26ubuntu
ubuntulinux-tools-raspi-6.14 (6.14.0-1018.18) @ plucky2026-07-26ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.14.0-36.36) @ plucky2026-07-26ubuntu
ubuntulinux-tools-oracle-edge (6.14.0-1017.17~24.04.1) @ noble2026-07-26ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1091.89) @ jammy2026-07-26ubuntu
ubuntulinux-tools-azure-edge (5.15.0.1102.111~20.04.1) @ focal2026-07-26ubuntu
redhatkernel-0:5.14.0-70.153.1.el9_02025-11-12redhat
redhatkernel-rt-0:5.14.0-70.153.1.rt21.225.el9_02025-11-12redhat
redhatkernel-0:5.14.0-284.143.1.el9_22025-10-20redhat
redhatkernel-rt-0:5.14.0-284.143.1.rt14.428.el9_22025-10-20redhat
redhatkernel-0:5.14.0-427.94.1.el9_42025-10-14redhat
redhatkernel-0:5.14.0-570.44.1.el9_62025-09-15redhat
redhatkernel-0:6.12.0-55.33.1.el10_02025-09-15redhat
linuxKernel @ 5.15.190—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.

Additional Vendor Advisories

(19)

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 13× in last 7d / 45× 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.

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

Frequently asked(5)

What is CVE-2025-38550?
CVE-2025-38550 is a high vulnerability published on August 16, 2025. In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: Delay put pmc->idev in mlddeldelrec() pmc->idev is still used in ip6mcclearsrc(), so as mldclear_delrec() does, the reference should be put after ip6mcclear_src() return.
When was CVE-2025-38550 disclosed?
CVE-2025-38550 was first published in the National Vulnerability Database on August 16, 2025, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-38550 actively exploited?
CVE-2025-38550 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 94.9% of all scored CVEs.
What is the CVSS score of CVE-2025-38550?
CVE-2025-38550 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2025-38550?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-38550, 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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