CVE-2026-53344

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-07-01. NVD baseline CVSS 5.5; sources differ by 0.0.

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

A fix is available — apply it.

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

pinctrl: mcp23s08: Initialize mcp->dev and mcp->addr before regmap init

Regmap initialization triggers regcache_maple_populate() which attempts SPI read to populate cache. SPI read requires mcp->dev and mcp->addr to be set, without them, NULL pointer dereference occurs during probe.

Move initialization before mcp23s08_spi_regmap_init() call.

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
4%
KEV
Not listed

Published

July 1, 2026

Last Modified

July 23, 2026

Advisory Details (2)

Auto-updated Jul 24, 2026
No patch confirmed yet.
generic

pinctrl: mcp23s08: Initialize mcp->dev and mcp->addr before regmap init - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8473c3a197b57ff01396f7a2ec6ddf65383820d4
generic

pinctrl: mcp23s08: Initialize mcp->dev and mcp->addr before regmap init - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3a13bb9540dfd7014c5601608afcbbadbbcfd673

Vendor Advisories for CVE-2026-53344(1)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1018.18~24.04.1) @ noble2026-09-18ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-31.31) @ resolute2026-09-18ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1013.13) @ resolute2026-09-18ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-18ubuntu

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

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (145 versions)7.0.13-1—

Weakness Classification(1)

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

All Vendor Advisories

(4)

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 / 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.

Showing the most recent 100 of 442 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-53344?
CVE-2026-53344 is a medium vulnerability published on July 1, 2026. In the Linux kernel, the following vulnerability has been resolved: pinctrl: mcp23s08: Initialize mcp->dev and mcp->addr before regmap init Regmap initialization triggers regcachemaplepopulate() which attempts SPI read to populate cache. SPI read requires mcp->dev and mcp->addr to be set, without…
When was CVE-2026-53344 disclosed?
CVE-2026-53344 was first published in the National Vulnerability Database on July 1, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53344 actively exploited?
CVE-2026-53344 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 96.0% of all scored CVEs.
What is the CVSS score of CVE-2026-53344?
CVE-2026-53344 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-53344?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53344, 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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