CVE-2026-74396

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-15. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

RDMA/mlx5: Fix UMR XLT cleanup on ODP populate failure

mlx5r_umr_update_xlt() allocates and DMA maps an XLT buffer with mlx5r_umr_create_xlt(). The buffer is released by the common cleanup path through mlx5r_umr_unmap_free_xlt().

After mlx5_odp_populate_xlt() became fallible, its error path returned directly and skipped that cleanup. This leaks the XLT DMA mapping and buffer. If the emergency XLT page was used, it also leaves xlt_emergency_page_mutex locked.

Break out of the loop so execution falls through the existing cleanup path.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity75% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

August 15, 2026

Last Modified

August 17, 2026

Advisory Details (3)

Auto-updated Aug 17, 2026
No patch confirmed yet.
generic

RDMA/mlx5: Fix UMR XLT cleanup on ODP populate failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ffa85a2c197935ace6f1634ad9eb0a44bc615670
generic

RDMA/mlx5: Fix UMR XLT cleanup on ODP populate failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9619909d4869afe720904c6888a289b9ac3055b8
generic

RDMA/mlx5: Fix UMR XLT cleanup on ODP populate failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1eae35b37923cb71b0cb5136d00671440d488b9f

Vendor Advisories for CVE-2026-74396(1)

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

Data Freshness Timeline

(refreshed 31× in last 7d / 31× 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. 2026-08-21 07:39 UTCEG score recompute
  2. 2026-08-21 07:39 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 19:33 UTCGHSA enrichment
  5. 2026-08-20 07:28 UTCGHSA enrichment
  6. 2026-08-19 19:22 UTCEG score recompute
  7. 2026-08-19 19:22 UTCGHSA enrichment
  8. 2026-08-19 17:04 UTCEPSS rescore
  9. 2026-08-19 07:14 UTCGHSA enrichment
  10. 2026-08-18 19:09 UTCEG score recompute
  11. 2026-08-18 19:09 UTCGHSA enrichment
  12. 2026-08-18 13:49 UTCEPSS rescore
  13. 2026-08-18 13:49 UTCEPSS rescore
  14. 2026-08-18 07:03 UTCGHSA enrichment
  15. 2026-08-17 18:56 UTCEG score recompute
  16. 2026-08-17 18:56 UTCGHSA enrichment
  17. 2026-08-17 13:47 UTCEPSS rescore
  18. 2026-08-17 06:26 UTCEG score recompute
  19. 2026-08-17 06:26 UTCGHSA enrichment
  20. 2026-08-17 05:56 UTCEG score recompute▲ 7.50
  21. 2026-08-17 05:56 UTCGHSA enrichment
  22. 2026-08-17 05:54 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  23. 2026-08-17 05:26 UTCEG score recompute
  24. 2026-08-17 05:26 UTCGHSA enrichment
  25. 2026-08-17 05:25 UTCMITRE cvelistV5
Show 6 more
  1. 2026-08-16 14:56 UTCEPSS rescore
  2. 2026-08-16 14:56 UTCEPSS rescore
  3. 2026-08-16 02:15 UTCEPSS rescore
  4. 2026-08-15 06:23 UTCNVD update
  5. 2026-08-15 06:14 UTCEG score recompute
  6. 2026-08-15 06:12 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-74396?
CVE-2026-74396 is a high vulnerability published on August 15, 2026. In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix UMR XLT cleanup on ODP populate failure mlx5rumrupdate_xlt() allocates and DMA maps an XLT buffer with mlx5rumrcreate_xlt(). The buffer is released by the common cleanup path through mlx5rumrunmapfreexlt(). After…
When was CVE-2026-74396 disclosed?
CVE-2026-74396 was first published in the National Vulnerability Database on August 15, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74396 actively exploited?
CVE-2026-74396 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 58.0% of all scored CVEs.
What is the CVSS score of CVE-2026-74396?
CVE-2026-74396 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-74396?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74396, 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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