CVE-2026-63932

UNRATEDCVSS · not yet scoredTrending — 3 sources updated this week
—
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No CVSS published and no exploitation signals yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS v2: —Exploit: None knownExposed: 0

A fix is available — apply it.

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

iio: chemical: mhz19b: reject oversized serial replies

mhz19b_receive_buf() appends each serdev chunk into the fixed MHZ19B_CMD_SIZE receive buffer and advances buf_idx by len without checking that the chunk fits in the remaining space. A large callback can therefore overflow st->buf before the command path validates the reply.

Reset the reply state before each command and reject oversized serial replies before copying them into the fixed buffer. When an oversized reply is detected, wake the waiter and report -EMSGSIZE instead of overwriting st->buf.

CVSS v3
—
EchelonGraph score
Not yet assessedNo source has published severity data for this CVE yet — no CVSS score from NVD or a CNA, no GitHub advisory, and it is not in CISA KEV. This is not a rating of zero; we cannot assess it yet.
EG Score
—
EG Risk
—
EPSS PROB
0%
EPSS %ILE
10%
KEV
Not listed

Published

July 19, 2026

Last Modified

July 27, 2026

References (3)

Vendor Advisories for CVE-2026-63932(1)

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

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-08-28ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-08-28ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-28ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-08-28ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-08-28ubuntu

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 (138 versions)7.0.12-1—

All Vendor Advisories

(5)

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

Related CVEs(same vendor)

Frequently asked(4)

What is CVE-2026-63932?
CVE-2026-63932 is a publicly disclosed vulnerability published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: iio: chemical: mhz19b: reject oversized serial replies mhz19breceivebuf() appends each serdev chunk into the fixed MHZ19BCMDSIZE receive buffer and advances buf_idx by len without checking that the chunk fits in the remaining…
When was CVE-2026-63932 disclosed?
CVE-2026-63932 was first published in the National Vulnerability Database on July 19, 2026, with the most recent update on July 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63932 actively exploited?
CVE-2026-63932 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 90.4% of all scored CVEs.
How do I remediate CVE-2026-63932?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63932, 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-2026-63932

Explore →

Is Your Infrastructure Affected by CVE-2026-63932?

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

Start Free Scan →Browse All CVEs