CVE-2025-37838

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-04-20. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 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:

HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Condition

In the ssi_protocol_probe() function, &ssi->work is bound with ssip_xmit_work(), In ssip_pn_setup(), the ssip_pn_xmit() function within the ssip_pn_ops structure is capable of starting the work.

If we remove the module which will call ssi_protocol_remove() to make a cleanup, it will free ssi through kfree(ssi), while the work mentioned above will be used. The sequence of operations that may lead to a UAF bug is as follows:

CPU0 CPU1

| ssip_xmit_work ssi_protocol_remove | kfree(ssi); | | struct hsi_client *cl = ssi->cl; | // use ssi

Fix it by ensuring that the work is canceled before proceeding with the cleanup in ssi_protocol_remove().

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
11%
KEV
Not listed

Published

April 18, 2025

Last Modified

August 5, 2026

Advisory Details (9)

Auto-updated Jul 30, 2026
No patch confirmed yet.
generic

HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Condition - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e3f88665a78045fe35c7669d2926b8d97b892c11
generic

HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Condition - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4b4194c9a7a8f92db39e8e86c85f4fb12ebbec4f
generic

HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Condition - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/834e602d0cc7c743bfce734fad4a46cefc0f9ab1
generic

HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Condition - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ae5a6a0b425e8f76a9f0677e50796e494e89b088
generic

HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Condition - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/58eb29dba712ab0f13af59ca2fe545f5ce360e78
generic

HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Condition - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d58493832e284f066e559b8da5ab20c15a2801d3
generic

HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Condition - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/72972552d0d0bfeb2dec5daf343a19018db36ffa
generic

HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Condition - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4a8c29beb8a02b5a0a9d77d608aa14b6f88a6b86
generic

HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Condition - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d03abc1c2b21324550fa71e12d53e7d3498e0af6

Patch Availability(31)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (6.14.0-22.22) @ plucky2026-05-30ubuntu
ubuntulinux-tools-azure (6.14.0-1007.7) @ plucky2026-05-30ubuntu
ubuntulinux-tools-oracle-64k (6.14.0-1007.7) @ plucky2026-05-30ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.144.141) @ jammy2026-05-30ubuntu
ubuntulinux-tools-realtime-5.15 (5.15.0.1088.92) @ jammy2026-05-30ubuntu
ubuntulinux-tools-gcp-fips-5.15 (5.15.0.1087.77) @ jammy2026-05-30ubuntu
ubuntulinux-tools-intel-iotg-edge (5.15.0.1083.89~20.04.1) @ focal2026-05-30ubuntu
ubuntulinux-tools-kvm-5.15 (5.15.0.1084.80) @ jammy2026-05-30ubuntu
ubuntulinux-xilinx-zynqmp-tools-host (5.15.0-1052.56) @ jammy2026-05-30ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1083.81) @ jammy2026-05-30ubuntu
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1094.92) @ jammy2026-05-30ubuntu
ubuntulinux-tools-azure-edge (5.15.0.1094.103~20.04.1) @ focal2026-05-30ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1094.79) @ jammy2026-05-30ubuntu
ubuntulinux-virtual-hwe-16.04-edge (4.15.0.243.255~16.04.1) @ xenial2026-05-30ubuntu
ubuntulinux-tools-gcp-fips-4.15 (4.15.0.2087.85) @ bionic2026-05-30ubuntu
ubuntulinux-tools-kvm (4.15.0.1168.159) @ bionic2026-05-30ubuntu
ubuntulinux-virtual-6.8 (6.8.0-87.88) @ noble2026-05-30ubuntu
ubuntulinux-virtual-lts-xenial (4.4.0.274.280) @ xenial2026-05-30ubuntu
ubuntulinux-tools-realtime-6.8.1 (6.8.1-1037.38) @ noble2026-05-30ubuntu
ubuntulinux-tools-gke-64k-6.8 (6.8.0-1039.44) @ noble2026-05-30ubuntu
ubuntulinux-tools-azure-lts-18.04 (4.15.0.1194.162) @ bionic2026-05-30ubuntu
ubuntulinux-tools-fips (4.4.0.1119.120) @ xenial2026-05-30ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1039.40) @ noble2026-05-30ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.4.0-1070 (5.4.0-1070.74) @ focal2026-05-30ubuntu
ubuntulinux-tools-oracle (4.15.0.1148.159~16.04.1) @ xenial2026-05-30ubuntu
ubuntulinux-tools-gcp-fips-5.4 (5.4.0.1155.97) @ focal2026-05-30ubuntu
ubuntulinux-tools-aws-edge (6.8.0-1042.44~22.04.1) @ jammy2026-05-30ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1044.50) @ noble2026-05-30ubuntu
ubuntulinux-tools-iot-5.4 (5.4.0.1056.54) @ focal2026-05-30ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1019.20) @ noble2026-05-30ubuntu
linuxKernel @ 5.4.293—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.

Weakness Classification(1)

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

All Vendor Advisories

(25)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 10× in last 7d / 46× 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 111 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2025-37838?
CVE-2025-37838 is a high vulnerability published on April 18, 2025. In the Linux kernel, the following vulnerability has been resolved: HSI: ssiprotocol: Fix use after free vulnerability in ssiprotocol Driver Due to Race Condition In the ssiprotocolprobe() function, &ssi->work is bound with ssipxmitwork(), In ssippnsetup(), the ssippnxmit() function within the…
When was CVE-2025-37838 disclosed?
CVE-2025-37838 was first published in the National Vulnerability Database on April 18, 2025, 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-2025-37838 actively exploited?
CVE-2025-37838 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 89.2% of all scored CVEs.
What is the CVSS score of CVE-2025-37838?
CVE-2025-37838 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2025-37838?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-37838, 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

Explore the affected products and dependency analysis for CVE-2025-37838

Explore →

Is Your Infrastructure Affected by CVE-2025-37838?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs