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render: fix multiple mem leaks on err paths

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Free nested allocations when initialization fails.
Several code paths returned early on error without releasing
memory owned by embedded structures, leading to leaks.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Mikhail Dmitrichenko <m.dmitrichenko222@gmail.com>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/2125>
This commit is contained in:
Mikhail Dmitrichenko
2026-02-05 16:07:43 +03:00
committed by Enrico Weigelt, metux IT consult
parent 0bd9955f4e
commit 1b3a041be0
1 changed files with 3 additions and 0 deletions
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3
render/picture.c
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@@ -900,6 +900,7 @@ CreateLinearGradientPicture(Picture pid, xPointFixed * p1, xPointFixed * p2,
initGradient(pPicture->pSourcePict, nStops, stops, colors, error);
if (*error) {
free(pPicture->pSourcePict);
free(pPicture);
return 0;
}
@@ -945,6 +946,7 @@ CreateRadialGradientPicture(Picture pid, xPointFixed * inner,
initGradient(pPicture->pSourcePict, nStops, stops, colors, error);
if (*error) {
free(pPicture->pSourcePict);
free(pPicture);
return 0;
}
@@ -983,6 +985,7 @@ CreateConicalGradientPicture(Picture pid, xPointFixed * center, xFixed angle,
initGradient(pPicture->pSourcePict, nStops, stops, colors, error);
if (*error) {
free(pPicture->pSourcePict);
free(pPicture);
return 0;
}