Heap overflow in libnv

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Summary

CVECVE-2026-35547
StatePUBLISHED
Assignerfreebsd
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-30 09:16:03 UTC
Updated2026-04-30 09:16:03 UTC
DescriptionWhen processing the header of an incoming message, libnv failed to properly validate the message size. The lack of validation allows a malicious program to write outside the bounds of a heap allocation. This can trigger a crash or system panic, and it may be possible for an unprivileged user to exploit the bug to elevate their privileges.

Risk And Classification

Problem Types: CWE-122 | CWE-130 | CWE-122 CWE-122: Heap-based Buffer Overflow | CWE-130 CWE-130: Improper Handling of Length Parameter Inconsistency

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA FreeBSD FreeBSD affected 15.0-RELEASE p7 release Not specified
CNA FreeBSD FreeBSD affected 14.4-RELEASE p3 release Not specified
CNA FreeBSD FreeBSD affected 14.3-RELEASE p12 release Not specified
CNA FreeBSD FreeBSD affected 13.5-RELEASE p13 release Not specified

References

ReferenceSourceLinkTags
security.freebsd.org/advisories/FreeBSD-SA-26:17.libnv.asc [email protected] security.freebsd.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Mariusz Zaborski (en)

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