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PatchSiren cyber security CVE debrief

CVE-2026-108985 sahlberg CVE debrief

libnfs through 6.0.2 before 7613236 has a HIGH-severity out-of-bounds write vulnerability in the ZDR decoding functionality related to lib/libnfs-zdr.c with libnfs_zdr_bytes(), libnfs_zdr_string(), and libnfs_zdr_array(). The issue arises because the caller-supplied maxsize value is not honored, potentially leading to security risks. Defenders should assess exposure and prioritize patching to mitigate potential security risks associated with this vulnerability. The CVE record and source item provide details on the vulnerability, with a CVSS score of 7.1. Verify and apply patches for libnfs versions before 7613236, review and update libnfs to version 7613236 or later, and monitor

Vendor
sahlberg
Product
libnfs
CVSS
HIGH 7.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-12
Original CVE updated
2026-10-12
Advisory published
2026-10-12
Advisory updated
2026-10-12

Who should care

Defenders responsible for systems and applications using libnfs versions before 7613236 should assess exposure and prioritize patching to mitigate potential security risks associated with this out-of-bounds write vulnerability.

Why it matters

CVE-2026-108985 is a HIGH-severity vulnerability in libnfs that can lead to potential security risks if left unpatched. Defenders should prioritize verifying and applying patches for libnfs versions before 7613236.

  • Verify and apply patches to prevent potential security risks
  • Review and update libnfs to version 7613236 or later to ensure security fixes
  • Monitor systems and applications for signs of compromise or abnormal behavior

Technical summary

The libnfs library through version 6.0.2 before 7613236 contains an out-of-bounds write vulnerability in the ZDR decoding functionality. This vulnerability is related to the lib/libnfs-zdr.c file, specifically in the functions libnfs_zdr_bytes(), libnfs_zdr_string(), and libnfs_zdr_array(). The issue arises because the caller-supplied maxsize value is not honored, potentially leading to security risks.

Defensive priority

Defenders should prioritize verifying and applying patches for libnfs versions before 7613236, as an out-of-bounds write vulnerability can lead to potential security risks.

Recommended defensive actions

  • Verify and apply patches for libnfs versions before 7613236
  • Review and update libnfs to version 7613236 or later
  • Monitor for potential security risks associated with out-of-bounds write vulnerability

Evidence notes

The CVE record and source item provide details on the out-of-bounds write vulnerability in libnfs through 6.0.2 before 7613236, with a CVSS score of 7.1 and HIGH severity.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-108985 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-108985

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-108985 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-108985

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • CVE-2026-108985

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/108xxx/CVE-2026-108985.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://github.com/sahlberg/libnfs/commit/7613236464317bee2d9636f087f995148de4db27

    Supplemental source - patch

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.