CVE-2026-64234

MEDIUMNVD 5.55.5
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-07-24. 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:

tty: serial: pch_uart: add check for dma_alloc_coherent()

Add a check for dma_alloc_coherent() failure to prevent a potential NULL pointer dereference in dma_handle_rx(). Properly release DMA channels and the PCI device reference using a goto ladder if the allocation fails.

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
2%
KEV
Not listed

Published

July 24, 2026

Last Modified

August 12, 2026

Advisory Details (8)

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

tty: serial: pch_uart: add check for dma_alloc_coherent() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/daea997bb244aeb50cbb2e5e075fb446a6cf068f
generic

tty: serial: pch_uart: add check for dma_alloc_coherent() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d8d53a343ebe74274ca17b1e1993042e99f8c863
generic

tty: serial: pch_uart: add check for dma_alloc_coherent() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d846df2dfbc2469a688833b4cc4f8aa80672bde8
generic

tty: serial: pch_uart: add check for dma_alloc_coherent() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/760df81763b391bb5f0dcb0b7597b736da753ae4
generic

tty: serial: pch_uart: add check for dma_alloc_coherent() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6fe472c1bbbe238e91141f7cabc1226e96a60d43
generic

tty: serial: pch_uart: add check for dma_alloc_coherent() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6dd5c0ea139b586ad5a091677056dafd405cfe82
generic

tty: serial: pch_uart: add check for dma_alloc_coherent() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/66f8bfea055b23719b4fd6ce207c44de37d82a59
generic

tty: serial: pch_uart: add check for dma_alloc_coherent() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5f2e2a240dc1846e049bc67e9c3cdf5b031d08bf

Vendor Advisories for CVE-2026-64234(1)

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

Patch Availability(3)

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (54 versions)5.10.259-1
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)6.12.94-1
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (138 versions)7.0.12-1

Weakness Classification(1)

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

All Vendor Advisories

(3)

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 22× in last 7d / 83× 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 101 total refreshes for this CVE.

  1. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-30 00:18 UTCEG score recompute
  3. 2026-08-30 00:18 UTCVendor advisory
  4. 2026-08-30 00:18 UTCGHSA enrichment
  5. 2026-08-28 21:42 UTCEPSS rescore
  6. 2026-08-27 21:06 UTCEG score recompute
  7. 2026-08-27 21:06 UTCVendor advisory
  8. 2026-08-27 21:06 UTCGHSA enrichment
  9. 2026-08-26 19:52 UTCEG score recompute
  10. 2026-08-26 19:52 UTCVendor advisory
  11. 2026-08-26 19:52 UTCGHSA enrichment
  12. 2026-08-26 14:47 UTCEPSS rescore
  13. 2026-08-25 17:44 UTCEG score recompute
  14. 2026-08-25 17:44 UTCVendor advisory
  15. 2026-08-25 17:44 UTCGHSA enrichment
  16. 2026-08-25 13:49 UTCEPSS rescore
  17. 2026-08-24 18:06 UTCEG score recompute
  18. 2026-08-24 18:06 UTCVendor advisory
  19. 2026-08-24 18:06 UTCGHSA enrichment
  20. 2026-08-23 16:58 UTCEG score recompute
  21. 2026-08-23 16:58 UTCVendor advisory
  22. 2026-08-23 16:58 UTCGHSA enrichment
  23. 2026-08-23 00:19 UTCEPSS rescore
  24. 2026-08-22 17:48 UTCEG score recompute
  25. 2026-08-22 17:48 UTCVendor advisory
Show 75 more
  1. 2026-08-22 17:48 UTCGHSA enrichment
  2. 2026-08-21 23:49 UTCEPSS rescore
  3. 2026-08-21 18:38 UTCEG score recompute
  4. 2026-08-21 18:38 UTCVendor advisory
  5. 2026-08-21 18:38 UTCGHSA enrichment
  6. 2026-08-20 22:55 UTCEPSS rescore
  7. 2026-08-20 19:28 UTCVendor advisory
  8. 2026-08-20 19:28 UTCGHSA enrichment
  9. 2026-08-19 20:18 UTCEG score recompute
  10. 2026-08-19 20:18 UTCVendor advisory
  11. 2026-08-19 20:18 UTCGHSA enrichment
  12. 2026-08-19 17:04 UTCEPSS rescore
  13. 2026-08-18 18:53 UTCEG score recompute
  14. 2026-08-18 18:53 UTCVendor advisory
  15. 2026-08-18 18:53 UTCGHSA enrichment
  16. 2026-08-18 13:48 UTCEPSS rescore
  17. 2026-08-17 15:17 UTCEG score recompute
  18. 2026-08-17 15:17 UTCVendor advisory
  19. 2026-08-17 15:17 UTCGHSA enrichment
  20. 2026-08-17 13:47 UTCEPSS rescore
  21. 2026-08-16 16:07 UTCEG score recompute
  22. 2026-08-16 16:07 UTCVendor advisory
  23. 2026-08-16 16:07 UTCGHSA enrichment
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-15 16:57 UTCEG score recompute
  26. 2026-08-15 16:57 UTCVendor advisory
  27. 2026-08-15 16:57 UTCGHSA enrichment
  28. 2026-08-15 01:30 UTCEPSS rescore
  29. 2026-08-14 17:46 UTCEG score recompute
  30. 2026-08-14 17:46 UTCVendor advisory
  31. 2026-08-14 17:46 UTCGHSA enrichment
  32. 2026-08-13 22:00 UTCEPSS rescore
  33. 2026-08-13 18:28 UTCEG score recompute
  34. 2026-08-13 18:28 UTCVendor advisory
  35. 2026-08-13 18:28 UTCGHSA enrichment
  36. 2026-08-12 19:19 UTCEG score recompute 5.50
  37. 2026-08-12 19:19 UTCVendor advisory
  38. 2026-08-12 19:19 UTCGHSA enrichment
  39. 2026-08-12 19:18 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
  40. 2026-08-12 13:51 UTCEPSS rescore
  41. 2026-08-11 00:00 UTCEPSS rescore
  42. 2026-08-10 22:22 UTCVendor advisory
  43. 2026-08-10 22:22 UTCGHSA enrichment
  44. 2026-08-09 13:47 UTCEPSS rescore
  45. 2026-08-08 16:37 UTCEPSS rescore
  46. 2026-08-08 02:36 UTCVendor advisory
  47. 2026-08-08 02:36 UTCGHSA enrichment
  48. 2026-08-06 13:47 UTCEPSS rescore
  49. 2026-08-05 19:17 UTCEPSS rescore
  50. 2026-08-05 19:17 UTCEPSS rescore
  51. 2026-08-05 06:49 UTCGHSA enrichment
  52. 2026-08-04 15:10 UTCEPSS rescore
  53. 2026-08-04 10:39 UTCEPSS rescore
  54. 2026-08-03 10:36 UTCEPSS rescore
  55. 2026-08-02 11:03 UTCVendor advisory
  56. 2026-08-02 11:03 UTCGHSA enrichment
  57. 2026-08-02 02:27 UTCEPSS rescore
  58. 2026-08-01 04:16 UTCEPSS rescore
  59. 2026-07-30 16:28 UTCEPSS rescore
  60. 2026-07-30 15:16 UTCEG score recompute
  61. 2026-07-30 15:16 UTCGHSA enrichment
  62. 2026-07-30 01:30 UTCEPSS rescore
  63. 2026-07-30 01:30 UTCEPSS rescore
  64. 2026-07-28 23:04 UTCEG score recompute
  65. 2026-07-28 23:04 UTCGHSA enrichment
  66. 2026-07-28 15:37 UTCEPSS rescore
  67. 2026-07-27 14:14 UTCEPSS rescore
  68. 2026-07-26 14:54 UTCEPSS rescore
  69. 2026-07-26 14:54 UTCEPSS rescore
  70. 2026-07-26 02:58 UTCEG score recompute
  71. 2026-07-26 02:58 UTCGHSA enrichment
  72. 2026-07-25 14:18 UTCEPSS rescore
  73. 2026-07-25 14:18 UTCEPSS rescore
  74. 2026-07-24 16:31 UTCNVD update
  75. 2026-07-24 15:43 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-64234?
CVE-2026-64234 is a medium vulnerability published on July 24, 2026. In the Linux kernel, the following vulnerability has been resolved: tty: serial: pchuart: add check for dmaalloc_coherent() Add a check for dmaalloccoherent() failure to prevent a potential NULL pointer dereference in dmahandlerx(). Properly release DMA channels and the PCI device reference using a…
When was CVE-2026-64234 disclosed?
CVE-2026-64234 was first published in the National Vulnerability Database on July 24, 2026, with the most recent update on August 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64234 actively exploited?
CVE-2026-64234 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 98.3% of all scored CVEs.
What is the CVSS score of CVE-2026-64234?
CVE-2026-64234 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-64234?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64234, 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-2026-64234

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