From nobody Fri Nov 19 00:02:34 2021 X-Original-To: dev-commits-src-all@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 78DDB188F64A; Fri, 19 Nov 2021 00:02:35 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4HwH0p28vCz4vf6; Fri, 19 Nov 2021 00:02:34 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 2147B1E4A9; Fri, 19 Nov 2021 00:02:34 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 1AJ02YH0072404; Fri, 19 Nov 2021 00:02:34 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 1AJ02Y1r072403; Fri, 19 Nov 2021 00:02:34 GMT (envelope-from git) Date: Fri, 19 Nov 2021 00:02:34 GMT Message-Id: <202111190002.1AJ02Y1r072403@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: "Bjoern A. Zeeb" Subject: git: ab5678c6c0d0 - stable/13 - net80211: proper ssid length check in setmlme_assoc_adhoc() List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-all@freebsd.org X-BeenThere: dev-commits-src-all@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: bz X-Git-Repository: src X-Git-Refname: refs/heads/stable/13 X-Git-Reftype: branch X-Git-Commit: ab5678c6c0d0b28feafdb2fd397866d6088f37d8 Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch stable/13 has been updated by bz: URL: https://cgit.FreeBSD.org/src/commit/?id=ab5678c6c0d0b28feafdb2fd397866d6088f37d8 commit ab5678c6c0d0b28feafdb2fd397866d6088f37d8 Author: Bjoern A. Zeeb AuthorDate: 2021-10-06 18:41:37 +0000 Commit: Bjoern A. Zeeb CommitDate: 2021-11-19 00:01:25 +0000 net80211: proper ssid length check in setmlme_assoc_adhoc() A user supplied SSID length is used without proper checks in setmlme_assoc_adhoc() which can lead to copies beyond the end of the user supplied buffer. The ssid is a fixed size array for the ioctl and the argument to setmlme_assoc_adhoc(). In addition to an ssid_len check of 0 also error in case the ssid_len is larger than the size of the ssid array to prevent problems. PR: 254737 Reported by: Tommaso (cutesmilee.research protonmail.com) (cherry picked from commit 526370fb85db4b659cff4625eb2f379acaa4a1a8) (cherry picked from commit 0525ece3554edce14fa68a7fb61078ae2110c44b) --- sys/net80211/ieee80211_ioctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sys/net80211/ieee80211_ioctl.c b/sys/net80211/ieee80211_ioctl.c index 2fef9ac0084a..419518eb1224 100644 --- a/sys/net80211/ieee80211_ioctl.c +++ b/sys/net80211/ieee80211_ioctl.c @@ -1591,7 +1591,7 @@ setmlme_assoc_adhoc(struct ieee80211vap *vap, ("expected opmode IBSS or AHDEMO not %s", ieee80211_opmode_name[vap->iv_opmode])); - if (ssid_len == 0) + if (ssid_len == 0 || ssid_len > IEEE80211_NWID_LEN) return EINVAL; sr = IEEE80211_MALLOC(sizeof(*sr), M_TEMP,