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  4. CVE 2026 1679 net eswifi socket send payload length not bounded
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Back to active CVEs
High · CVSS 7.3CVE-2026-1679

net: eswifi socket send payload length not boundedCVE-2026-1679

Answer in brief

CVE-2026-1679 records a High severity (CVSS 7.3) vulnerability in net: eswifi socket send payload length not bounded. The current sources do not mark it as known exploited. The current feed maps zephyrproject-rtos/Zephyr (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Mar 27, 2026Updated Oct 15, 2026Source checked Oct 15, 2026First seen by HOL Oct 15, 2026Material review Oct 15, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 7.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps zephyrproject-rtos/Zephyr (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
zephyrproject-rtos/Zephyrgeneric>=* <4.4.04.4.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for zephyrproject-rtos/Zephyr.
  2. 2Review the reported fix. Update zephyrproject-rtos/Zephyr to 4.4.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Mar 27, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 15, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 15, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
Upstream source description

The eswifi socket offload driver copies user-provided payloads into a fixed buffer without checking available space; oversized sends overflow `eswifi->buf`, corrupting kernel memory (CWE-120). Exploit requires local code that can call the socket send API; no remote attacker can reach it directly.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • MP4v2 through 2.1.3 Heap Out-of-Bounds Read via MP4File::GetChaptersSame generic ecosystem
  • libical through 4.0.6 Heap Out-of-Bounds Read via icalvalue_decode_ical_stringSame generic ecosystem
  • libmodplug through 0.8.9.1 Heap Out-of-Bounds Write via CSoundFile::ReadDSMSame generic ecosystem
  • libmodplug through 0.8.9.1 Heap Out-of-Bounds Read via CSoundFile::ReadAMS2Same generic ecosystem
  • LibRaw through 0.22.2 Heap Out-of-Bounds Read via parseNikonMakernote ShotInfoSame generic ecosystem
  • unarr through 1.1.1 Off-by-One Heap Buffer Overflow via tar_get_nameSame generic ecosystem

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-120
Source
CVE List V5
Source checked
Oct 15, 2026
References
1 linked source
Open source record