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31 lines
1.1 KiB
31 lines
1.1 KiB
6 years ago
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Adam Jackson <ajax@redhat.com>
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Date: Tue, 13 Jun 2017 09:29:28 -0400
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Subject: [PATCH] modesetting: Validate the atom for enum properties
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The client could have said anything here, and if what they said doesn't
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actually name an atom NameForAtom() will return NULL, and strcmp() will
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be unhappy about that.
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[copied from xserver d4995a3936ae283b9080fdaa0905daa669ebacfc]
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Signed-off-by: Adam Jackson <ajax@redhat.com>
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---
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src/qxl_drmmode.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/src/qxl_drmmode.c b/src/qxl_drmmode.c
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index 3c288f9..ff164cd 100644
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--- a/src/qxl_drmmode.c
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+++ b/src/qxl_drmmode.c
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@@ -622,7 +622,8 @@ drmmode_output_set_property(xf86OutputPtr output, Atom property,
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if (value->type != XA_ATOM || value->format != 32 || value->size != 1)
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return FALSE;
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memcpy(&atom, value->data, 4);
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- name = NameForAtom(atom);
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+ if (!(name = NameForAtom(atom)))
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+ return FALSE;
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/* search for matching name string, then set its value down */
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for (j = 0; j < p->mode_prop->count_enums; j++) {
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