Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-97545.json
JSON Data
https://api.osv.dev/v1/vulns/AZL-97545
Upstream
Published
2026-08-20T18:16:35Z
Modified
2026-08-29T05:27:27Z
Summary
CVE-2026-63381 affecting package ntp 4.2.8p17-2
Details

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has a use-after-free in buffer.c when evbufferaddbufferreference processes an output buffer whose outtotallen is zero. evbufferfreeallchains frees the initial empty chain without resetting outbuf->first, outbuf->last, or outbuf->lastwithdatap, and APPENDCHAINMULTICAST subsequently dereferences the dangling chain pointer. A caller that can drive this buffer state can cause memory corruption or a process crash. This issue is fixed in versions 2.1.13 and 2.2.2-alpha.

References

Affected packages

Azure Linux:3 / ntp

Package

Name
ntp
Purl
pkg:rpm/azure-linux/ntp

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Last affected
4.2.8p17-2

Database specific

source
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-97545.json"