The branch main has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=34271824525e18d82c051177de265c8d8a113fb8
commit 34271824525e18d82c051177de265c8d8a113fb8 Author: John Baldwin <[email protected]> AuthorDate: 2026-07-27 15:36:55 +0000 Commit: Mark Johnston <[email protected]> CommitDate: 2026-07-29 17:45:02 +0000 wg(4): Check for crypto operation errors In particular, handle authentication errors due to bad MACs when decrypting packets. Since the current dispatch code assumes synchronous OCF sessions by design, explicitly reject any created OCF session that is not synchronous. Software sessions are always synchronous in practice, so this should be a nop. Approved by: so Security: FreeBSD-SA-26:52.if_wg Security: CVE-2026-58085 Reviewed by: markj Sponsored by: Chelsio Communications --- sys/dev/wg/wg_crypto.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/sys/dev/wg/wg_crypto.c b/sys/dev/wg/wg_crypto.c index 53441ef25b40..82b80c7fd451 100644 --- a/sys/dev/wg/wg_crypto.c +++ b/sys/dev/wg/wg_crypto.c @@ -230,6 +230,8 @@ chacha20poly1305_encrypt_mbuf(struct mbuf *m, const uint64_t nonce, crp.crp_cipher_key = key; crp.crp_callback = crypto_callback; ret = crypto_dispatch(&crp); + if (ret == 0) + ret = crp.crp_etype; crypto_destroyreq(&crp); return (ret); } @@ -253,6 +255,8 @@ chacha20poly1305_decrypt_mbuf(struct mbuf *m, const uint64_t nonce, crp.crp_cipher_key = key; crp.crp_callback = crypto_callback; ret = crypto_dispatch(&crp); + if (ret == 0) + ret = crp.crp_etype; crypto_destroyreq(&crp); if (ret) return (ret); @@ -270,9 +274,14 @@ crypto_init(void) .csp_cipher_klen = CHACHA20POLY1305_KEY_SIZE, .csp_flags = CSP_F_SEPARATE_AAD | CSP_F_SEPARATE_OUTPUT }; - int ret = crypto_newsession(&chacha20_poly1305_sid, &csp, CRYPTOCAP_F_SOFTWARE); + int ret = crypto_newsession(&chacha20_poly1305_sid, &csp, + CRYPTOCAP_F_SOFTWARE); if (ret != 0) return (ret); + if (!CRYPTO_SESS_SYNC(chacha20_poly1305_sid)) { + crypto_freesession(chacha20_poly1305_sid); + return (ENXIO); + } return (0); }
