[OE-core][kirkstone][PATCH 1/4] avahi: patch CVE-2025-68276

[OE-core][kirkstone][PATCH 1/4] avahi: patch CVE-2025-68276

[Peter Marko]

From: Ankur Tyagi <ankur.tyagi85@gmail.com>

Backport the patch[1] from the PR[2] mentioned in the nvd[3].

[1] https://github.com/avahi/avahi/commit/2d48e42d44a183f26a4d12d1f5d41abb9b7c6355
[2] https://github.com/avahi/avahi/pull/806
[3] https://nvd.nist.gov/vuln/detail/CVE-2025-68276

Dropped CI changes from the original PR during backport.

Signed-off-by: Ankur Tyagi <ankur.tyagi85@gmail.com>
Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Peter Marko <peter.marko@siemens.com>
---
 meta/recipes-connectivity/avahi/avahi_0.8.bb  |  1 +
 .../avahi/files/CVE-2025-68276.patch          | 65 +++++++++++++++++++
 2 files changed, 66 insertions(+)
 create mode 100644 meta/recipes-connectivity/avahi/files/CVE-2025-68276.patch

diff --git a/meta/recipes-connectivity/avahi/avahi_0.8.bb b/meta/recipes-connectivity/avahi/avahi_0.8.bb
index 20b2791ef32..b38fedb38bf 100644
--- a/meta/recipes-connectivity/avahi/avahi_0.8.bb
+++ b/meta/recipes-connectivity/avahi/avahi_0.8.bb
@@ -37,6 +37,7 @@ SRC_URI = "https://github.com/lathiat/avahi/releases/download/v${PV}/avahi-${PV}
            file://CVE-2023-38473.patch \
            file://CVE-2024-52616.patch \
            file://CVE-2024-52615.patch \
+           file://CVE-2025-68276.patch \
            "
 
 UPSTREAM_CHECK_URI = "https://github.com/lathiat/avahi/releases/"
diff --git a/meta/recipes-connectivity/avahi/files/CVE-2025-68276.patch b/meta/recipes-connectivity/avahi/files/CVE-2025-68276.patch
new file mode 100644
index 00000000000..75169419f10
--- /dev/null
+++ b/meta/recipes-connectivity/avahi/files/CVE-2025-68276.patch
@@ -0,0 +1,65 @@
+From 8ec85459d8e6e59cc14457e16fb7ba171901f90e Mon Sep 17 00:00:00 2001
+From: Evgeny Vereshchagin <evvers@ya.ru>
+Date: Wed, 17 Dec 2025 08:11:23 +0000
+Subject: [PATCH] core: refuse to create wide-area record browsers when
+ wide-area is off
+
+It fixes a bug where it was possible for unprivileged local users to
+crash avahi-daemon (with wide-area disabled) by creating record browsers
+with the AVAHI_LOOKUP_USE_WIDE_AREA flag set via D-Bus (either by calling
+the RecordBrowserNew method directly or by creating hostname/address/service
+resolvers/browsers that create those browsers internally themselves).
+
+```
+$ gdbus call --system --dest org.freedesktop.Avahi --object-path / --method org.freedesktop.Avahi.Server.ResolveHostName -- -1 -1 yo.local -1 1
+Error: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying
+```
+```
+dbus-protocol.c: interface=org.freedesktop.Avahi.Server, path=/, member=ResolveHostName
+avahi-daemon: wide-area.c:725: avahi_wide_area_scan_cache: Assertion `e' failed.
+==307948==
+==307948== Process terminating with default action of signal 6 (SIGABRT)
+==307948==    at 0x4B3630C: __pthread_kill_implementation (pthread_kill.c:44)
+==307948==    by 0x4ADF921: raise (raise.c:26)
+==307948==    by 0x4AC74AB: abort (abort.c:77)
+==307948==    by 0x4AC741F: __assert_fail_base.cold (assert.c:118)
+==307948==    by 0x48D8B85: avahi_wide_area_scan_cache (wide-area.c:725)
+==307948==    by 0x48C8953: lookup_scan_cache (browse.c:351)
+==307948==    by 0x48C8B1B: lookup_go (browse.c:386)
+==307948==    by 0x48C9148: defer_callback (browse.c:516)
+==307948==    by 0x48AEA0E: expiration_event (timeeventq.c:94)
+==307948==    by 0x489D3AE: timeout_callback (simple-watch.c:447)
+==307948==    by 0x489D787: avahi_simple_poll_dispatch (simple-watch.c:563)
+==307948==    by 0x489D91E: avahi_simple_poll_iterate (simple-watch.c:605)
+==307948==
+```
+
+wide-area has been disabled by default since
+9c4214146738146e454f098264690e8e884c39bd (v0.9-rc2).
+
+https://github.com/avahi/avahi/security/advisories/GHSA-mhf3-865v-g5rc
+
+CVE: CVE-2025-68276
+Upstream-Status: Backport [https://github.com/avahi/avahi/commit/2d48e42d44a183f26a4d12d1f5d41abb9b7c6355]
+(cherry picked from commit 2d48e42d44a183f26a4d12d1f5d41abb9b7c6355)
+Signed-off-by: Ankur Tyagi <ankur.tyagi85@gmail.com>
+---
+ avahi-core/browse.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/avahi-core/browse.c b/avahi-core/browse.c
+index e8a915e..59d53cb 100644
+--- a/avahi-core/browse.c
++++ b/avahi-core/browse.c
+@@ -541,6 +541,11 @@ AvahiSRecordBrowser *avahi_s_record_browser_prepare(
+     AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_FLAGS_VALID(flags, AVAHI_LOOKUP_USE_WIDE_AREA|AVAHI_LOOKUP_USE_MULTICAST), AVAHI_ERR_INVALID_FLAGS);
+     AVAHI_CHECK_VALIDITY_RETURN_NULL(server, !(flags & AVAHI_LOOKUP_USE_WIDE_AREA) || !(flags & AVAHI_LOOKUP_USE_MULTICAST), AVAHI_ERR_INVALID_FLAGS);
+ 
++    if ((flags & AVAHI_LOOKUP_USE_WIDE_AREA) && !server->wide_area_lookup_engine) {
++        avahi_server_set_errno(server, AVAHI_ERR_NOT_SUPPORTED);
++        return NULL;
++    }
++
+     if (!(b = avahi_new(AvahiSRecordBrowser, 1))) {
+         avahi_server_set_errno(server, AVAHI_ERR_NO_MEMORY);
+         return NULL;

[OE-core][kirkstone][PATCH 2/4] avahi: patch CVE-2025-68468

[Peter Marko]

From: Amaury Couderc <amaury.couderc@est.tech>

Signed-off-by: Amaury Couderc <amaury.couderc@est.tech>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 9f2ed8adc37a42b561b3c4853cf8106fba39889e)
Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Peter Marko <peter.marko@siemens.com>
---
 meta/recipes-connectivity/avahi/avahi_0.8.bb  |  1 +
 .../avahi/files/CVE-2025-68468.patch          | 32 +++++++++++++++++++
 2 files changed, 33 insertions(+)
 create mode 100644 meta/recipes-connectivity/avahi/files/CVE-2025-68468.patch

diff --git a/meta/recipes-connectivity/avahi/avahi_0.8.bb b/meta/recipes-connectivity/avahi/avahi_0.8.bb
index b38fedb38bf..3faebcba832 100644
--- a/meta/recipes-connectivity/avahi/avahi_0.8.bb
+++ b/meta/recipes-connectivity/avahi/avahi_0.8.bb
@@ -38,6 +38,7 @@ SRC_URI = "https://github.com/lathiat/avahi/releases/download/v${PV}/avahi-${PV}
            file://CVE-2024-52616.patch \
            file://CVE-2024-52615.patch \
            file://CVE-2025-68276.patch \
+           file://CVE-2025-68468.patch \
            "
 
 UPSTREAM_CHECK_URI = "https://github.com/lathiat/avahi/releases/"
diff --git a/meta/recipes-connectivity/avahi/files/CVE-2025-68468.patch b/meta/recipes-connectivity/avahi/files/CVE-2025-68468.patch
new file mode 100644
index 00000000000..3635cc8d53e
--- /dev/null
+++ b/meta/recipes-connectivity/avahi/files/CVE-2025-68468.patch
@@ -0,0 +1,32 @@
+From 483f83828cfda965fac914ff1b39c63c256372b2 Mon Sep 17 00:00:00 2001
+From: Hugo Muis <198191869+friendlyhugo@users.noreply.github.com>
+Date: Sun, 2 Mar 2025 18:06:24 +0100
+Subject: [PATCH] core: fix DoS bug by removing incorrect assertion
+
+Closes https://github.com/avahi/avahi/issues/683
+
+CVE: CVE-2025-68468
+
+Upstream-Status: Backport
+[https://github.com/avahi/avahi/commit/f66be13d7f31a3ef806d226bf8b67240179d309a]
+
+Signed-off-by: Amaury Couderc <amaury.couderc@est.tech>
+---
+ avahi-core/browse.c | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/avahi-core/browse.c b/avahi-core/browse.c
+index 86e4432..79595fe 100644
+--- a/avahi-core/browse.c
++++ b/avahi-core/browse.c
+@@ -295,7 +295,6 @@ static void lookup_multicast_callback(
+                 lookup_drop_cname(l, interface, protocol, 0, r);
+             else {
+                 /* It's a normal record, so let's call the user callback */
+-                assert(avahi_key_equal(b->key, l->key));
+ 
+                 b->callback(b, interface, protocol, event, r, flags, b->userdata);
+             }
+-- 
+2.43.0
+

[OE-core][kirkstone][PATCH 3/4] avahi: patch CVE-2025-68471

[Peter Marko]

From: Amaury Couderc <amaury.couderc@est.tech>

Signed-off-by: Amaury Couderc <amaury.couderc@est.tech>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 5ec4156330c765bc52dbce28dbba6def9868d30f)
Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Peter Marko <peter.marko@siemens.com>
---
 meta/recipes-connectivity/avahi/avahi_0.8.bb  |  1 +
 .../avahi/files/CVE-2025-68471.patch          | 36 +++++++++++++++++++
 2 files changed, 37 insertions(+)
 create mode 100644 meta/recipes-connectivity/avahi/files/CVE-2025-68471.patch

diff --git a/meta/recipes-connectivity/avahi/avahi_0.8.bb b/meta/recipes-connectivity/avahi/avahi_0.8.bb
index 3faebcba832..c1d919783c1 100644
--- a/meta/recipes-connectivity/avahi/avahi_0.8.bb
+++ b/meta/recipes-connectivity/avahi/avahi_0.8.bb
@@ -39,6 +39,7 @@ SRC_URI = "https://github.com/lathiat/avahi/releases/download/v${PV}/avahi-${PV}
            file://CVE-2024-52615.patch \
            file://CVE-2025-68276.patch \
            file://CVE-2025-68468.patch \
+           file://CVE-2025-68471.patch \
            "
 
 UPSTREAM_CHECK_URI = "https://github.com/lathiat/avahi/releases/"
diff --git a/meta/recipes-connectivity/avahi/files/CVE-2025-68471.patch b/meta/recipes-connectivity/avahi/files/CVE-2025-68471.patch
new file mode 100644
index 00000000000..210565cdd61
--- /dev/null
+++ b/meta/recipes-connectivity/avahi/files/CVE-2025-68471.patch
@@ -0,0 +1,36 @@
+From 4e84c1d6eb2f54d1643bd7ce62817c722ca36d25 Mon Sep 17 00:00:00 2001
+From: Hugo Muis <198191869+friendlyhugo@users.noreply.github.com>
+Date: Sun, 2 Mar 2025 18:06:24 +0100
+Subject: [PATCH] core: fix DoS bug by changing assert to return
+
+Closes https://github.com/avahi/avahi/issues/678
+
+CVE: CVE-2025-68471
+
+Upstream-Status: Backport
+[https://github.com/avahi/avahi/commit/9c6eb53bf2e290aed84b1f207e3ce35c54cc0aa1]
+
+Signed-off-by: Amaury Couderc <amaury.couderc@est.tech>
+---
+ avahi-core/browse.c | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/avahi-core/browse.c b/avahi-core/browse.c
+index 2941e57..86e4432 100644
+--- a/avahi-core/browse.c
++++ b/avahi-core/browse.c
+@@ -320,7 +320,10 @@ static int lookup_start(AvahiSRBLookup *l) {
+     assert(l);
+ 
+     assert(!(l->flags & AVAHI_LOOKUP_USE_WIDE_AREA) != !(l->flags & AVAHI_LOOKUP_USE_MULTICAST));
+-    assert(!l->wide_area && !l->multicast);
++    if (l->wide_area || l->multicast) {
++        /* Avoid starting a duplicate lookup */
++        return 0;
++    }
+ 
+     if (l->flags & AVAHI_LOOKUP_USE_WIDE_AREA) {
+ 
+-- 
+2.43.0
+

[OE-core][kirkstone][PATCH 4/4] avahi: patch CVE-2026-24401

[Peter Marko]

From: Ankur Tyagi <ankur.tyagi85@gmail.com>

Details https://nvd.nist.gov/vuln/detail/CVE-2026-24401

Signed-off-by: Ankur Tyagi <ankur.tyagi85@gmail.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 183d0ee54f1c194e245a7bbf243c19b3c2acf4f5)
Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Peter Marko <peter.marko@siemens.com>
---
 meta/recipes-connectivity/avahi/avahi_0.8.bb  |  1 +
 .../avahi/files/CVE-2026-24401.patch          | 74 +++++++++++++++++++
 2 files changed, 75 insertions(+)
 create mode 100644 meta/recipes-connectivity/avahi/files/CVE-2026-24401.patch

diff --git a/meta/recipes-connectivity/avahi/avahi_0.8.bb b/meta/recipes-connectivity/avahi/avahi_0.8.bb
index c1d919783c1..9ef771e5a2d 100644
--- a/meta/recipes-connectivity/avahi/avahi_0.8.bb
+++ b/meta/recipes-connectivity/avahi/avahi_0.8.bb
@@ -40,6 +40,7 @@ SRC_URI = "https://github.com/lathiat/avahi/releases/download/v${PV}/avahi-${PV}
            file://CVE-2025-68276.patch \
            file://CVE-2025-68468.patch \
            file://CVE-2025-68471.patch \
+           file://CVE-2026-24401.patch \
            "
 
 UPSTREAM_CHECK_URI = "https://github.com/lathiat/avahi/releases/"
diff --git a/meta/recipes-connectivity/avahi/files/CVE-2026-24401.patch b/meta/recipes-connectivity/avahi/files/CVE-2026-24401.patch
new file mode 100644
index 00000000000..1a442966fc9
--- /dev/null
+++ b/meta/recipes-connectivity/avahi/files/CVE-2026-24401.patch
@@ -0,0 +1,74 @@
+From 5eea2640324928c15936b7a2bcbf8ea0de7b08f7 Mon Sep 17 00:00:00 2001
+From: Hugo Muis <198191869+friendlyhugo@users.noreply.github.com>
+Date: Sun, 2 Mar 2025 18:06:24 +0100
+Subject: [PATCH] core: fix uncontrolled recursion bug using a simple loop
+ detection algorithm
+
+Closes https://github.com/avahi/avahi/issues/501
+
+CVE: CVE-2026-24401
+Upstream-Status: Backport [https://github.com/avahi/avahi/commit/78eab31128479f06e30beb8c1cbf99dd921e2524]
+(cherry picked from commit 78eab31128479f06e30beb8c1cbf99dd921e2524)
+Signed-off-by: Ankur Tyagi <ankur.tyagi85@gmail.com>
+---
+ avahi-core/browse.c | 40 ++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 40 insertions(+)
+
+diff --git a/avahi-core/browse.c b/avahi-core/browse.c
+index f461083..975b3e9 100644
+--- a/avahi-core/browse.c
++++ b/avahi-core/browse.c
+@@ -401,6 +401,40 @@ static int lookup_go(AvahiSRBLookup *l) {
+     return n;
+ }
+ 
++static int lookup_exists_in_path(AvahiSRBLookup* lookup, AvahiSRBLookup* from, AvahiSRBLookup* to) {
++    AvahiRList* rl;
++    if (from == to)
++        return 0;
++    for (rl = from->cname_lookups; rl; rl = rl->rlist_next) {
++        int r = lookup_exists_in_path(lookup, rl->data, to);
++        if (r == 1) {
++            /* loop detected, propagate result */
++            return r;
++        } else if (r == 0) {
++            /* is loop detected? */
++            return lookup == from;
++        } else {
++	        /* `to` not found, continue */
++            continue;
++        }
++    }
++    /* no path found */
++    return -1;
++}
++
++static int cname_would_create_loop(AvahiSRBLookup* l, AvahiSRBLookup* n) {
++    int ret;
++    if (l == n)
++        /* Loop to self */
++        return 1;
++
++    ret = lookup_exists_in_path(n, l->record_browser->root_lookup, l);
++
++    /* Path to n always exists */
++    assert(ret != -1);
++    return ret;
++}
++
+ static void lookup_handle_cname(AvahiSRBLookup *l, AvahiIfIndex interface, AvahiProtocol protocol, AvahiLookupFlags flags, AvahiRecord *r) {
+     AvahiKey *k;
+     AvahiSRBLookup *n;
+@@ -420,6 +454,12 @@ static void lookup_handle_cname(AvahiSRBLookup *l, AvahiIfIndex interface, Avahi
+         return;
+     }
+ 
++    if (cname_would_create_loop(l, n)) {
++        /* CNAME loops are not allowed */
++        lookup_unref(n);
++        return;
++    }
++
+     l->cname_lookups = avahi_rlist_prepend(l->cname_lookups, lookup_ref(n));
+ 
+     lookup_go(n);