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d="scan'208";a="842664893" Received: from alln-l-core-07.cisco.com ([173.36.16.144]) by alln-iport-3.cisco.com with ESMTP/TLS/TLS_AES_256_GCM_SHA384; 01 Sep 2026 08:54:25 +0000 Received: from sjc-ads-4178.cisco.com (sjc-ads-4178.cisco.com [171.70.54.199]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "ciscoit-managed-infra-smtp-auth.cisco.com", Issuer "Internal Private TLS SubCA" (verified OK)) by alln-l-core-07.cisco.com (Postfix) with ESMTPS id E7409180001C3; Tue, 1 Sep 2026 08:54:24 +0000 (GMT) Received: by sjc-ads-4178.cisco.com (Postfix, from userid 1887505) id 84476CE1C04; Tue, 1 Sep 2026 01:54:24 -0700 (PDT) From: "Hetvi Thakar -X (hthakar - E INFOCHIPS PRIVATE LIMITED at Cisco)" To: openembedded-devel@lists.openembedded.org Cc: xe-linux-external@cisco.com, Hetvi Thakar Subject: [OE-core][scarthgap][Patch v2 5/5] libssh: Fix CVE-2026-59850 Date: Tue, 1 Sep 2026 01:53:57 -0700 Message-Id: <20260901085357.1254306-6-hthakar@cisco.com> X-Mailer: git-send-email 2.35.6 In-Reply-To: <20260901085357.1254306-1-hthakar@cisco.com> References: <20260901085357.1254306-1-hthakar@cisco.com> MIME-Version: 1.0 X-Auto-Response-Suppress: DR, OOF, AutoReply X-Outbound-Client-TLS: VERIFIED;sjc-ads-4178.cisco.com [171.70.54.199];TLSv1.3;TLS_AES_256_GCM_SHA384;256;ciscoit-managed-infra-smtp-auth.cisco.com X-Outbound-SMTP-Client: 171.70.54.199, sjc-ads-4178.cisco.com X-Outbound-Node: alln-l-core-07.cisco.com List-Id: X-Webhook-Received: from 45-33-107-173.ip.linodeusercontent.com [45.33.107.173] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Tue, 01 Sep 2026 08:54:26 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-devel/message/129625 From: Hetvi Thakar The stable-0.11 commit shown in [1] is the upstream fix selected for this backport. The upstream advisory [2] documents CVE-2026-59850 and identifies libssh 0.11.5 as the fixed release for the 0.11 series. [1] https://git.libssh.org/projects/libssh.git/commit/?id=6edfb52b3b364577d2db0334c0514a977efceed2 [2] https://www.libssh.org/security/advisories/CVE-2026-59850.txt Signed-off-by: Hetvi Thakar --- .../libssh/libssh/CVE-2026-59850.patch | 40 +++++++++++++++++++ .../recipes-support/libssh/libssh_0.10.6.bb | 1 + 2 files changed, 41 insertions(+) create mode 100644 meta-oe/recipes-support/libssh/libssh/CVE-2026-59850.patch diff --git a/meta-oe/recipes-support/libssh/libssh/CVE-2026-59850.patch b/meta-oe/recipes-support/libssh/libssh/CVE-2026-59850.patch new file mode 100644 index 000000000..61e502c79 --- /dev/null +++ b/meta-oe/recipes-support/libssh/libssh/CVE-2026-59850.patch @@ -0,0 +1,40 @@ +From a207ee3b4244c0e5da902245f8b81f3617b416f3 Mon Sep 17 00:00:00 2001 +From: Jakub Jelen +Date: Wed, 1 Jul 2026 16:43:08 +0200 +Subject: [PATCH] CVE-2026-59850 channels: Avoid processing DATA packets on + closed channels +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Signed-off-by: Jakub Jelen +Reviewed-by: Pavol Žáčik + +CVE: CVE-2026-59850 +Upstream-Status: Backport [https://git.libssh.org/projects/libssh.git/commit/?id=6edfb52b3b364577d2db0334c0514a977efceed2] + +(cherry picked from commit a8a3fa352bb5213e08a35e4494c6e44360e2e38a) +(cherry picked from commit 6edfb52b3b364577d2db0334c0514a977efceed2) +Signed-off-by: Hetvi Thakar +--- + src/channels.c | 7 +++++++ + 1 file changed, 7 insertions(+) + +diff --git a/src/channels.c b/src/channels.c +index 3afdcf11..1543c792 100644 +--- a/src/channels.c ++++ b/src/channels.c +@@ -575,6 +575,13 @@ SSH_PACKET_CALLBACK(channel_rcv_data){ + channel->local_window, + channel->remote_window); + ++ if (channel->flags & SSH_CHANNEL_FLAG_CLOSED_REMOTE) { ++ SSH_LOG(SSH_LOG_WARNING, "Received data on (remotely) closed channel"); ++ ssh_set_error(session, SSH_FATAL, "Received data on (remotely) closed channel"); ++ SSH_STRING_FREE(str); ++ return SSH_PACKET_USED; ++ } ++ + /* What shall we do in this case? Let's accept it anyway */ + if (len > channel->local_window) { + SSH_LOG(SSH_LOG_RARE, diff --git a/meta-oe/recipes-support/libssh/libssh_0.10.6.bb b/meta-oe/recipes-support/libssh/libssh_0.10.6.bb index 960621eac..ccfa55e0d 100644 --- a/meta-oe/recipes-support/libssh/libssh_0.10.6.bb +++ b/meta-oe/recipes-support/libssh/libssh_0.10.6.bb @@ -37,6 +37,7 @@ SRC_URI = "git://git.libssh.org/projects/libssh.git;protocol=https;branch=stable file://CVE-2026-59846.patch \ file://CVE-2026-59848.patch \ file://CVE-2026-59848-regression.patch \ + file://CVE-2026-59850.patch \ " SRCREV = "10e09e273f69e149389b3e0e5d44b8c221c2e7f6"