AZL-96953
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-96953.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-96953
- Upstream
- Published
- 2026-08-20T18:16:35Z
- Modified
- 2026-09-10T14:17:39Z
- Summary
- CVE-2026-63381 affecting package libevent for versions less than 2.1.13-1
- 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