gpsd: patch CVE-2025-67268

Details: https://nvd.nist.gov/vuln/detail/CVE-2025-67268

Pick the patch that is referenced by the NVD advisory.

The original commit also contains a lot of commenting style
changes (// vs /* */) and whitespace changes which were removed from
the backport.

Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
Signed-off-by: Anuj Mittal <anuj.mittal@oss.qualcomm.com>

2 files changed, 98 insertions, 0 deletions

diff --git a/meta-oe/recipes-navigation/gpsd/gpsd/CVE-2025-67268.patch b/meta-oe/recipes-navigation/gpsd/gpsd/CVE-2025-67268.patch
new file mode 100644
index 0000000000..d32e5095e2
--- /dev/null
+++ b/meta-oe/recipes-navigation/gpsd/gpsd/CVE-2025-67268.patch
@@ -0,0 +1,97 @@
+From 6045f465f3ab253e1075b5b3666fd95ede4fb848 Mon Sep 17 00:00:00 2001
+From: "Gary E. Miller" <gem@rellim.com>
+Date: Tue, 2 Dec 2025 19:36:04 -0800
+Subject: [PATCH] drivers/driver_nmea2000.c: Fix issue 356, skyview buffer
+ overrun.
+
+CVE: CVE-2025-67268
+Upstream-Status: Backport [https://github.com/ntpsec/gpsd/commit/dc966aa74c075d0a6535811d98628625cbfbe3f4]
+Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
+---
+ drivers/driver_nmea2000.c | 50 ++++++++++++++++++++++++++-------------
+ 1 file changed, 33 insertions(+), 17 deletions(-)
+
+diff --git a/drivers/driver_nmea2000.c b/drivers/driver_nmea2000.c
+index 71e04e1..6854b2d 100644
+--- a/drivers/driver_nmea2000.c
++++ b/drivers/driver_nmea2000.c
+@@ -89,14 +89,14 @@ static int scale_int(int32_t var, const int64_t factor)
+ static void print_data(struct gps_context_t *context,
+                        unsigned char *buffer, int len, PGN *pgn)
+ {
+-    if ((libgps_debuglevel >= LOG_IO) != 0) {
+-        int   l1, l2, ptr;
++    if (LOG_IO <= libgps_debuglevel) {
++        int   l1;
+         char  bu[128];
+ 
+-        ptr = 0;
+-        l2 = sprintf(&bu[ptr], "got data:%6u:%3d: ", pgn->pgn, len);
++        int ptr = 0;
++        int l2 = sprintf(&bu[ptr], "got data:%6u:%3d: ", pgn->pgn, len);
+         ptr += l2;
+-        for (l1=0;l1<len;l1++) {
++        for (l1 = 0; l1 < len; l1++) {
+             if (((l1 % 20) == 0) && (l1 != 0)) {
+                 GPSD_LOG(LOG_IO, &context->errout, "%s\n", bu);
+                 ptr = 0;
+@@ -434,6 +434,7 @@ static gps_mask_t hnd_129540(unsigned char *bu, int len, PGN *pgn,
+                              struct gps_device_t *session)
+ {
+     int         l1;
++    int         expected_len;
+ 
+     print_data(session->context, bu, len, pgn);
+     GPSD_LOG(LOG_DATA, &session->context->errout,
+@@ -441,24 +442,39 @@ static gps_mask_t hnd_129540(unsigned char *bu, int len, PGN *pgn,
+ 
+     session->driver.nmea2000.sid[2]           = bu[0];
+     session->gpsdata.satellites_visible       = (int)bu[2];
++    if (MAXCHANNELS <= session->gpsdata.satellites_visible) {
++        // Handle a CVE for overrunning skyview[]
++        GPSD_LOG(LOG_WARN, &session->context->errout,
++                 "pgn %6d(%3d): Too many sats %d\n",
++                 pgn->pgn, session->driver.nmea2000.unit,
++                 session->gpsdata.satellites_visible);
++        session->gpsdata.satellites_visible = MAXCHANNELS;
++    }
++    expected_len = 3 + (12 * session->gpsdata.satellites_visible);
++    if (len != expected_len) {
++        GPSD_LOG(LOG_WARN, &session->context->errout,
++                 "pgn %6d(%3d): wrong  length %d s/b %d\n",
++                 pgn->pgn, session->driver.nmea2000.unit,
++                 len, expected_len);
++        return 0;
++    }
+ 
+     memset(session->gpsdata.skyview, '\0', sizeof(session->gpsdata.skyview));
+-    for (l1=0;l1<session->gpsdata.satellites_visible;l1++) {
+-        int    svt;
+-        double azi, elev, snr;
+-
+-        elev  = getles16(bu, 3+12*l1+1) * 1e-4 * RAD_2_DEG;
+-        azi   = getleu16(bu, 3+12*l1+3) * 1e-4 * RAD_2_DEG;
+-        snr   = getles16(bu, 3+12*l1+5) * 1e-2;
++    for (l1 = 0; l1 < session->gpsdata.satellites_visible; l1++) {
++        int offset = 3 + (12 * l1);
++        double elev  = getles16(bu, offset + 1) * 1e-4 * RAD_2_DEG;
++        double azi   = getleu16(bu, offset + 3) * 1e-4 * RAD_2_DEG;
++        double snr   = getles16(bu, offset + 5) * 1e-2;
+ 
+-        svt   = (int)(bu[3+12*l1+11] & 0x0f);
++        int svt   = (int)(bu[offset + 11] & 0x0f);
+ 
+-        session->gpsdata.skyview[l1].elevation  = (short) (round(elev));
+-        session->gpsdata.skyview[l1].azimuth    = (short) (round(azi));
++        session->gpsdata.skyview[l1].elevation  = elev;
++        session->gpsdata.skyview[l1].azimuth    = azi;
+         session->gpsdata.skyview[l1].ss         = snr;
+-        session->gpsdata.skyview[l1].PRN        = (short)bu[3+12*l1+0];
++        session->gpsdata.skyview[l1].PRN        = (int16_t)bu[offset];
+         session->gpsdata.skyview[l1].used = false;
+-        if ((svt == 2) || (svt == 5)) {
++        if ((2 == svt) ||
++            (5 == svt)) {
+             session->gpsdata.skyview[l1].used = true;
+         }
+     }
diff --git a/meta-oe/recipes-navigation/gpsd/gpsd_3.26.1.bb b/meta-oe/recipes-navigation/gpsd/gpsd_3.26.1.bb
index e4a571daa6..6462d7b6f2 100644
--- a/meta-oe/recipes-navigation/gpsd/gpsd_3.26.1.bb
+++ b/meta-oe/recipes-navigation/gpsd/gpsd_3.26.1.bb
@@ -9,6 +9,7 @@ HOMEPAGE = "https://gpsd.io/"
 
 SRC_URI = "${SAVANNAH_GNU_MIRROR}/${BPN}/${BP}.tar.gz \
            file://gpsd.init \
+           file://CVE-2025-67268.patch \
            "
 SRC_URI[sha256sum] = "dc7e465968c1540e61bc57c7586d6a57a0047212a014efdad348f907bc2e0990"