CVE-2026-64258

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-07-25. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: 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:

fuse-uring: remove request-less entries from ent_w_req_queue to fix NULL deref

If a copy into the userspace ring buffer fails, a request will be terminated and fuse_uring_req_end() will set ent->fuse_req to NULL but it will leave the entry on ent_w_req_queue in FRRS_FUSE_REQ state. This can lead to a NULL deref if the request expiration logic scans ent_w_req_queue in the window before the entry is moved off it.

Fix this by taking the entry off ent_w_req_queue and changing its state from FRRS_FUSE_REQ to FRRS_INVALID before terminating the request.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

July 25, 2026

Last Modified

August 17, 2026

Advisory Details (3)

Auto-updated Aug 12, 2026
No patch confirmed yet.
generic

fuse-uring: remove request-less entries from ent_w_req_queue to fix NULL deref - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1c57a69be962d459c5e705f5cb4355b841b3461c
generic

fuse-uring: remove request-less entries from ent_w_req_queue to fix NULL deref - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0b466cf1b96e191b06b496c4de79da15315c3a9a
generic

fuse-uring: remove request-less entries from ent_w_req_queue to fix NULL deref - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0a7f33010c0e4cd92937e088a54350381fd0fbf2

Vendor Advisories for CVE-2026-64258(1)

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

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (156 versions)7.1.4-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 61× 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. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-30 00:14 UTCEG score recompute
  3. 2026-08-30 00:14 UTCGHSA enrichment
  4. 2026-08-28 21:42 UTCEPSS rescore
  5. 2026-08-27 23:11 UTCEG score recompute
  6. 2026-08-27 23:11 UTCGHSA enrichment
  7. 2026-08-26 21:28 UTCEG score recompute
  8. 2026-08-26 21:28 UTCGHSA enrichment
  9. 2026-08-26 14:47 UTCEPSS rescore
  10. 2026-08-25 19:46 UTCEG score recompute
  11. 2026-08-25 19:46 UTCGHSA enrichment
  12. 2026-08-25 13:49 UTCEPSS rescore
  13. 2026-08-24 18:04 UTCEG score recompute
  14. 2026-08-24 18:03 UTCGHSA enrichment
  15. 2026-08-23 15:39 UTCEG score recompute
  16. 2026-08-23 15:39 UTCGHSA enrichment
  17. 2026-08-23 00:19 UTCEPSS rescore
  18. 2026-08-22 13:57 UTCEG score recompute
  19. 2026-08-22 13:57 UTCGHSA enrichment
  20. 2026-08-21 23:49 UTCEPSS rescore
  21. 2026-08-21 12:14 UTCEG score recompute
  22. 2026-08-21 12:14 UTCGHSA enrichment
  23. 2026-08-20 22:55 UTCEPSS rescore
  24. 2026-08-20 10:31 UTCEG score recompute
  25. 2026-08-20 10:31 UTCGHSA enrichment
Show 54 more
  1. 2026-08-19 17:04 UTCEPSS rescore
  2. 2026-08-19 08:48 UTCEG score recompute
  3. 2026-08-19 08:48 UTCGHSA enrichment
  4. 2026-08-18 13:48 UTCEPSS rescore
  5. 2026-08-18 07:06 UTCEG score recompute
  6. 2026-08-18 07:06 UTCGHSA enrichment
  7. 2026-08-17 13:47 UTCEPSS rescore
  8. 2026-08-17 05:22 UTCGHSA enrichment
  9. 2026-08-16 22:48 UTCEG score recompute
  10. 2026-08-16 22:48 UTCGHSA enrichment
  11. 2026-08-16 14:56 UTCEPSS rescore
  12. 2026-08-15 21:06 UTCEG score recompute
  13. 2026-08-15 21:06 UTCGHSA enrichment
  14. 2026-08-15 01:30 UTCEPSS rescore
  15. 2026-08-14 19:24 UTCEG score recompute
  16. 2026-08-14 19:24 UTCGHSA enrichment
  17. 2026-08-13 22:00 UTCEPSS rescore
  18. 2026-08-13 17:41 UTCEG score recompute
  19. 2026-08-13 17:41 UTCGHSA enrichment
  20. 2026-08-12 15:55 UTCEG score recompute▲ 5.50
  21. 2026-08-12 15:55 UTCGHSA enrichment
  22. 2026-08-12 15:55 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
  23. 2026-08-12 13:51 UTCEPSS rescore
  24. 2026-08-12 03:01 UTCGHSA enrichment
  25. 2026-08-11 00:00 UTCEPSS rescore
  26. 2026-08-09 13:47 UTCEPSS rescore
  27. 2026-08-09 00:05 UTCGHSA enrichment
  28. 2026-08-08 16:37 UTCEPSS rescore
  29. 2026-08-06 13:47 UTCEPSS rescore
  30. 2026-08-05 21:09 UTCGHSA enrichment
  31. 2026-08-05 19:17 UTCEPSS rescore
  32. 2026-08-05 19:17 UTCEPSS rescore
  33. 2026-08-04 15:10 UTCEPSS rescore
  34. 2026-08-03 10:36 UTCEPSS rescore
  35. 2026-08-02 18:13 UTCGHSA enrichment
  36. 2026-08-02 02:27 UTCEPSS rescore
  37. 2026-07-30 16:28 UTCEPSS rescore
  38. 2026-07-30 15:16 UTCEG score recompute
  39. 2026-07-30 15:16 UTCGHSA enrichment
  40. 2026-07-30 01:30 UTCEPSS rescore
  41. 2026-07-30 01:30 UTCEPSS rescore
  42. 2026-07-29 05:51 UTCEG score recompute
  43. 2026-07-29 05:50 UTCGHSA enrichment
  44. 2026-07-28 15:37 UTCEPSS rescore
  45. 2026-07-27 14:14 UTCEPSS rescore
  46. 2026-07-26 14:54 UTCEPSS rescore
  47. 2026-07-26 14:54 UTCEPSS rescore
  48. 2026-07-26 02:54 UTCEG score recompute
  49. 2026-07-26 02:54 UTCGHSA enrichment
  50. 2026-07-25 14:18 UTCEPSS rescore
  51. 2026-07-25 14:18 UTCEPSS rescore
  52. 2026-07-25 10:39 UTCNVD update
  53. 2026-07-25 09:43 UTCEG score recompute
  54. 2026-07-25 09:21 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-64258?
CVE-2026-64258 is a medium vulnerability published on July 25, 2026. In the Linux kernel, the following vulnerability has been resolved: fuse-uring: remove request-less entries from entwreq_queue to fix NULL deref If a copy into the userspace ring buffer fails, a request will be terminated and fuseuringreqend() will set ent->fusereq to NULL but it will leave the…
When was CVE-2026-64258 disclosed?
CVE-2026-64258 was first published in the National Vulnerability Database on July 25, 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-2026-64258 actively exploited?
CVE-2026-64258 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 95.2% of all scored CVEs.
What is the CVSS score of CVE-2026-64258?
CVE-2026-64258 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-64258?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64258, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-64258

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