44 lines
1.3 KiB
Diff
44 lines
1.3 KiB
Diff
From a020fda02fd0aca0c53b2368e6602bbd12002936 Mon Sep 17 00:00:00 2001
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From: Peter Hutterer <peter.hutterer@who-t.net>
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Date: Mon, 8 Oct 2018 12:55:57 +1000
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Subject: [PATCH xf86-video-v4l 2/4] Ensure the device name is null-terminated
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And expand the size to 18, because the stack array we copied this into is 18
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bytes long. This covers us for up to 999 (kernel) v4l devices and that is
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definitely not a reason to use the "640k ought to be enough" meme.
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Found by - you guessed it - coverity!
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Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
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Reviewed-by: Dave Airlie <airlied@redhat.com>
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---
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src/v4l.c | 5 +++--
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1 file changed, 3 insertions(+), 2 deletions(-)
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diff --git a/src/v4l.c b/src/v4l.c
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index 0f1058e..583c7b8 100644
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--- a/src/v4l.c
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+++ b/src/v4l.c
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@@ -188,7 +188,7 @@ static const XF86AttributeRec FreqAttr =
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static struct V4L_DEVICE {
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int fd;
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int useCount;
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- char devName[16];
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+ char devName[18];
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} v4l_devices[MAX_V4L_DEVICES] = {
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{ -1 },
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{ -1 },
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@@ -1157,7 +1157,8 @@ V4LInit(ScrnInfoPtr pScrn, XF86VideoAdaptorPtr **adaptors)
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}
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xf86Msg(X_INFO, "v4l: enabling overlay mode for %s.\n", dev);
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- strncpy(V4L_NAME, dev, 16);
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+ strncpy(V4L_NAME, dev, 18);
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+ V4L_NAME[17] = '\0';
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V4LBuildEncodings(pPPriv, fd);
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if (NULL == pPPriv->enc)
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return FALSE;
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--
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2.17.1
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