DEBIAN-CVE-2026-63381
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-63381
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-63381.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-63381
- Upstream
- Published
- 2026-08-20T18:16:35Z
- Modified
- 2026-09-18T16:01:17Z
- Severity
-
- 5.8 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
- Summary
- [none]
- 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 evbuffer_add_buffer_reference processes an output buffer whose out_total_len is zero. evbuffer_free_all_chains frees the initial empty chain without resetting outbuf->first, outbuf->last, or outbuf->last_with_datap, and APPEND_CHAIN_MULTICAST 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
Debian:12 / libevent
Package
- Name
- libevent
- Purl
- pkg:deb/debian/libevent?arch=source&distro=bookworm
Debian:13 / libevent
Package
- Name
- libevent
- Purl
- pkg:deb/debian/libevent?arch=source&distro=trixie
Debian:14 / libevent
Package
- Name
- libevent
- Purl
- pkg:deb/debian/libevent?arch=source&distro=forky