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[kirkstone] alsa-lib: patch CVE-2026-25068

Message ID 20260220205428.822146-1-peter.marko@siemens.com
State New
Headers show
Series [kirkstone] alsa-lib: patch CVE-2026-25068 | expand

Commit Message

Marko, Peter Feb. 20, 2026, 8:54 p.m. UTC 
From: Peter Marko <peter.marko@siemens.com>

Pick patch mentioned in NVD report.
It also includes CVE ID in commit message.

Use older SNDERR funtion as new one is not yet available.
This was copied from Debian patch.

Signed-off-by: Peter Marko <peter.marko@siemens.com>
---
 .../alsa/alsa-lib/CVE-2026-25068.patch        | 34 +++++++++++++++++++
 .../alsa/alsa-lib_1.2.6.1.bb                  |  1 +
 2 files changed, 35 insertions(+)
 create mode 100644 meta/recipes-multimedia/alsa/alsa-lib/CVE-2026-25068.patch
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Patch

diff --git a/meta/recipes-multimedia/alsa/alsa-lib/CVE-2026-25068.patch b/meta/recipes-multimedia/alsa/alsa-lib/CVE-2026-25068.patch
new file mode 100644
index 00000000000..edc22fd62bc
--- /dev/null
+++ b/meta/recipes-multimedia/alsa/alsa-lib/CVE-2026-25068.patch
@@ -0,0 +1,34 @@ 
+From 5f7fe33002d2d98d84f72e381ec2cccc0d5d3d40 Mon Sep 17 00:00:00 2001
+From: Jaroslav Kysela <perex@perex.cz>
+Date: Thu, 29 Jan 2026 16:51:09 +0100
+Subject: [PATCH] topology: decoder - add boundary check for channel mixer
+ count
+
+Malicious binary topology file may cause heap corruption.
+
+CVE: CVE-2026-25068
+
+Signed-off-by: Jaroslav Kysela <perex@perex.cz>
+
+Upstream-Status: Backport [https://github.com/alsa-project/alsa-lib/commit/5f7fe33002d2d98d84f72e381ec2cccc0d5d3d40]
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ src/topology/ctl.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/src/topology/ctl.c b/src/topology/ctl.c
+index a0c24518..322c461c 100644
+--- a/src/topology/ctl.c
++++ b/src/topology/ctl.c
+@@ -1246,6 +1246,11 @@ int tplg_decode_control_mixer1(snd_tplg_t *tplg,
+ 	if (mc->num_channels > 0) {
+ 		map = tplg_calloc(heap, sizeof(*map));
+ 		map->num_channels = mc->num_channels;
++		if (map->num_channels > SND_TPLG_MAX_CHAN ||
++		    map->num_channels > SND_SOC_TPLG_MAX_CHAN) {
++			SNDERR("mixer: unexpected channel count %d", map->num_channels);
++			return -EINVAL;
++		}
+ 		for (i = 0; i < map->num_channels; i++) {
+ 			map->channel[i].reg = mc->channel[i].reg;
+ 			map->channel[i].shift = mc->channel[i].shift;
diff --git a/meta/recipes-multimedia/alsa/alsa-lib_1.2.6.1.bb b/meta/recipes-multimedia/alsa/alsa-lib_1.2.6.1.bb
index ca6bedae976..8c91863ad1f 100644
--- a/meta/recipes-multimedia/alsa/alsa-lib_1.2.6.1.bb
+++ b/meta/recipes-multimedia/alsa/alsa-lib_1.2.6.1.bb
@@ -10,6 +10,7 @@  LIC_FILES_CHKSUM = "file://COPYING;md5=a916467b91076e631dd8edb7424769c7 \
                     "
 
 SRC_URI = "https://www.alsa-project.org/files/pub/lib/${BP}.tar.bz2"
+SRC_URI += "file://CVE-2026-25068.patch"
 SRC_URI[sha256sum] = "ad582993d52cdb5fb159a0beab60a6ac57eab0cc1bdf85dc4db6d6197f02333f"
 
 inherit autotools pkgconfig