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synaptics-prometheus: Add a sanity check to fix a fuzzing failure

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Fixes https://oss-fuzz.com/testcase-detail/6232454836387840
This commit is contained in:
Richard Hughes 2022-04-27 19:38:20 +01:00
parent 3553336eff
commit 2b81290829
1 changed files with 11 additions and 0 deletions
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11
plugins/synaptics-prometheus/fu-synaprom-firmware.c
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@ -104,6 +104,17 @@ fu_synaprom_firmware_parse(FuFirmware *firmware,
tag); tag);
return FALSE; return FALSE;
} }
/* sanity check */
img = fu_firmware_get_image_by_idx(firmware, tag, NULL);
if (img != NULL) {
g_set_error(error,
G_IO_ERROR,
G_IO_ERROR_INVALID_DATA,
"tag 0x%04x already present in image",
tag);
return FALSE;
}
hdrsz = GUINT32_FROM_LE(header.bufsz); hdrsz = GUINT32_FROM_LE(header.bufsz);
if (hdrsz == 0) { if (hdrsz == 0) {
g_set_error(error, g_set_error(error,