CVE-2026-63381
⚪ Do wiadomości
Błąd use-after-free w libevent może prowadzić do uszkodzenia pamięci lub awarii procesu.
CVSS
0.0
EPSS
0.1%
Exploit
none
Vendor
Opis źródłowy (NVD)
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.
brak
Brak patcha
Źródła i daty
| Źródło | Wartość |
|---|---|
| NVD – CVSS | 0.0 |
| CISA KEV (aktywnie wykorzystywane) | Nie |
| FIRST EPSS (prawdopodobieństwo exploita) | 0.1% |
| Opublikowano (NVD) | 2026-08-20 18:16:35 UTC |
| Ostatnia modyfikacja (NVD) | 2026-08-21 22:16:42 UTC |
Referencje
- https://github.com/libevent/libevent/commit/5cb95ba2f804f8aff46f88d58391c71e1251cd1c (security-advisories@github.com)
- https://github.com/libevent/libevent/commit/9db091b04f569be3a700fa9860ef02f90b830af9 (security-advisories@github.com)
- https://github.com/libevent/libevent/releases/tag/release-2.1.13-stable (security-advisories@github.com)
- https://github.com/libevent/libevent/releases/tag/release-2.2.2-alpha (security-advisories@github.com)
- https://github.com/libevent/libevent/security/advisories/GHSA-c2pj-cg4r-88c8 (security-advisories@github.com)