61 lines
2.0 KiB
Diff
61 lines
2.0 KiB
Diff
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From d7ac1fb14657f278fcc32863aa99eb32a2069d58 Mon Sep 17 00:00:00 2001
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From: rpm-build <rpm-build>
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Date: Mon, 24 Oct 2022 17:06:15 +0800
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Subject: [PATCH] xkb: fix some possible memleaks in XkbGetKbdByName
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GetComponentByName returns an allocated string, so let's free that if we
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fail somewhere.
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Signed-off-by: Peter Hutterer's avatarPeter Hutterer <peter.hutterer@who-t.net>
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---
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xkb/xkb.c | 24 ++++++++++++++++++++----
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1 file changed, 20 insertions(+), 4 deletions(-)
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diff --git a/xkb/xkb.c b/xkb/xkb.c
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index 4dccc62..123671a 100644
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--- a/xkb/xkb.c
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+++ b/xkb/xkb.c
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@@ -5936,19 +5936,35 @@ ProcXkbGetKbdByName(ClientPtr client)
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xkb = dev->key->xkbInfo->desc;
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status = Success;
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str = (unsigned char *) &stuff[1];
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- if (GetComponentSpec(&str, TRUE, &status)) /* keymap, unsupported */
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- return BadMatch;
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+ {
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+ char *keymap = GetComponentSpec(&str, TRUE, &status); /* keymap, unsupported */
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+ if (keymap) {
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+ free(keymap);
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+ return BadMatch;
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+ }
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+ }
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names.keycodes = GetComponentSpec(&str, TRUE, &status);
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names.types = GetComponentSpec(&str, TRUE, &status);
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names.compat = GetComponentSpec(&str, TRUE, &status);
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names.symbols = GetComponentSpec(&str, TRUE, &status);
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names.geometry = GetComponentSpec(&str, TRUE, &status);
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- if (status != Success)
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+ if (status == Success) {
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+ len = str - ((unsigned char *) stuff);
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+ if ((XkbPaddedSize(len) / 4) != stuff->length)
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+ status = BadLength;
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+ }
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+
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+ if (status != Success) {
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+ free(names.keycodes);
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+ free(names.types);
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+ free(names.compat);
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+ free(names.symbols);
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+ free(names.geometry);
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return status;
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len = str - ((unsigned char *) stuff);
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if ((XkbPaddedSize(len) / 4) != stuff->length)
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return BadLength;
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-
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+ }
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CHK_MASK_LEGAL(0x01, stuff->want, XkbGBN_AllComponentsMask);
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CHK_MASK_LEGAL(0x02, stuff->need, XkbGBN_AllComponentsMask);
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--
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2.33.0
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