From: Hetvi Thakar <[email protected]> This patch applies the upstream fix that permits session-bind requests while the agent is locked so forwarded sessions remain classified as remote. The upstream fix commit is referenced in [1], and the public CVE advisory is referenced in [2].
[1] https://github.com/openssh/openssh-portable/commit/6a57081dc35acf3ee298108d4bc3580489608d5 [2] https://www.cve.org/CVERecord?id=CVE-2026-73281 Signed-off-by: Hetvi Thakar <[email protected]> --- .../openssh/openssh/CVE-2026-73281.patch | 76 +++++++++++++++++++ .../openssh/openssh_9.6p1.bb | 1 + 2 files changed, 77 insertions(+) create mode 100644 meta/recipes-connectivity/openssh/openssh/CVE-2026-73281.patch diff --git a/meta/recipes-connectivity/openssh/openssh/CVE-2026-73281.patch b/meta/recipes-connectivity/openssh/openssh/CVE-2026-73281.patch new file mode 100644 index 0000000000..9f017ece17 --- /dev/null +++ b/meta/recipes-connectivity/openssh/openssh/CVE-2026-73281.patch @@ -0,0 +1,76 @@ +From df8fe9ebecc57c486f2d1ea5b1a5c34b22858bcb Mon Sep 17 00:00:00 2001 +From: "[email protected]" <[email protected]> +Date: Fri, 7 Aug 2026 05:18:05 +0000 +Subject: [PATCH] upstream: Allow [email protected] requests when the + agent is + +locked, otherwise forwarding sessions established with an agent was locked +will be treated as local, rather than remote. + +Reported by sn0x-sharma + +OpenBSD-Commit-ID: 524f210c6f2b3a06e0a2f6d0af5188a9a75fa2c7 + +CVE: CVE-2026-73281 +Upstream-Status: Backport [https://github.com/openssh/openssh-portable/commit/6a57081dc35acf3ee298108d4bc3580489608d5f] + +Backport Changes: +- Omitted the upstream OpenBSD RCS revision header update because it does + not apply to the OpenSSH 9.6p1 source revision. +- OpenSSH 9.6p1 lacks the later query extension and replied/generic_fail + dispatch, so locked non-session-bind extensions retain the 9.6p1 + success=false response path. + +(cherry picked from commit 6a57081dc35acf3ee298108d4bc3580489608d5f) +Signed-off-by: Hetvi Thakar <[email protected]> +--- + ssh-agent.c | 18 +++++++++++++++--- + 1 file changed, 15 insertions(+), 3 deletions(-) + +diff --git a/ssh-agent.c b/ssh-agent.c +index 2d2c6fcc..f1c35fd2 100644 +--- a/ssh-agent.c ++++ b/ssh-agent.c +@@ -1778,10 +1778,19 @@ process_extension(SocketEntry *e) + error_fr(r, "parse"); + goto send; + } +- if (strcmp(name, "[email protected]") == 0) ++ /* ++ * This function can be called while the agent is locked to allow ++ * session binds to be processed for new channels. ++ * Other operations should be refused when locked. ++ */ ++ ++ if (strcmp(name, "[email protected]") == 0) { + success = process_ext_session_bind(e); +- else ++ } else if (locked) { ++ debug_f("attempt to use extension \"%s\" while locked", name); ++ } else { + debug_f("unsupported extension \"%s\"", name); ++ } + free(name); + send: + send_status(e, success); +@@ -1831,16 +1840,19 @@ process_message(u_int socknum) + + /* check whether agent is locked */ + if (locked && type != SSH_AGENTC_UNLOCK) { +- sshbuf_reset(e->request); + switch (type) { + case SSH2_AGENTC_REQUEST_IDENTITIES: + /* send empty lists */ + no_identities(e); + break; ++ case SSH_AGENTC_EXTENSION: ++ process_extension(e); ++ break; + default: + /* send a fail message for all other request types */ + send_status(e, 0); + } ++ sshbuf_reset(e->request); + return 1; + } + diff --git a/meta/recipes-connectivity/openssh/openssh_9.6p1.bb b/meta/recipes-connectivity/openssh/openssh_9.6p1.bb index 651b7437a6..572a614380 100644 --- a/meta/recipes-connectivity/openssh/openssh_9.6p1.bb +++ b/meta/recipes-connectivity/openssh/openssh_9.6p1.bb @@ -46,6 +46,7 @@ SRC_URI = "http://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-${PV}.tar file://CVE-2026-60000.patch \ file://CVE-2026-73283.patch \ file://CVE-2026-73282.patch \ + file://CVE-2026-73281.patch \ " SRC_URI[sha256sum] = "910211c07255a8c5ad654391b40ee59800710dd8119dd5362de09385aa7a777c" -- 2.35.6
-=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#246917): https://lists.openembedded.org/g/openembedded-core/message/246917 Mute This Topic: https://lists.openembedded.org/mt/121504071/21656 Group Owner: [email protected] Unsubscribe: https://lists.openembedded.org/g/openembedded-core/unsub [[email protected]] -=-=-=-=-=-=-=-=-=-=-=-
