git: bf58a77ae125 - stable/13 - ipsec esp: avoid dereferencing freed secasindex
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Date: Mon, 04 Mar 2024 00:28:15 UTC
The branch stable/13 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=bf58a77ae125f4e5fd4a2c9bea42ee44340d3736 commit bf58a77ae125f4e5fd4a2c9bea42ee44340d3736 Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2024-02-25 10:30:48 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> CommitDate: 2024-03-04 00:27:56 +0000 ipsec esp: avoid dereferencing freed secasindex (cherry picked from commit 1a56620b7958cac2b9048589cb730c46958ab539) --- sys/netipsec/xform_esp.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/sys/netipsec/xform_esp.c b/sys/netipsec/xform_esp.c index 37a5c5f4fd8b..a0efea0e5323 100644 --- a/sys/netipsec/xform_esp.c +++ b/sys/netipsec/xform_esp.c @@ -500,6 +500,13 @@ esp_input_cb(struct cryptop *crp) xd = crp->crp_opaque; CURVNET_SET(xd->vnet); sav = xd->sav; + if (sav->state >= SADB_SASTATE_DEAD) { + /* saidx is freed */ + DPRINTF(("%s: dead SA %p spi %#x\n", __func__, sav, sav->spi)); + ESPSTAT_INC(esps_notdb); + error = ESRCH; + goto bad; + } skip = xd->skip; protoff = xd->protoff; cryptoid = xd->cryptoid;