Signed-off-by: Ross Burton <ross.bur...@arm.com> --- .../xorg-lib/pixman/CVE-2022-44638.patch | 33 +++++++++++++++++++ .../xorg-lib/pixman_0.40.0.bb | 1 + 2 files changed, 34 insertions(+) create mode 100644 meta/recipes-graphics/xorg-lib/pixman/CVE-2022-44638.patch
diff --git a/meta/recipes-graphics/xorg-lib/pixman/CVE-2022-44638.patch b/meta/recipes-graphics/xorg-lib/pixman/CVE-2022-44638.patch new file mode 100644 index 00000000000..d226766d49a --- /dev/null +++ b/meta/recipes-graphics/xorg-lib/pixman/CVE-2022-44638.patch @@ -0,0 +1,33 @@ +CVE: CVE-2022-44638 +Upstream-Status: Backport +Signed-off-by: Ross Burton <ross.bur...@arm.com> + +From a1f88e842e0216a5b4df1ab023caebe33c101395 Mon Sep 17 00:00:00 2001 +From: Matt Turner <matts...@gmail.com> +Date: Wed, 2 Nov 2022 12:07:32 -0400 +Subject: [PATCH] Avoid integer overflow leading to out-of-bounds write + +Thanks to Maddie Stone and Google's Project Zero for discovering this +issue, providing a proof-of-concept, and a great analysis. + +Closes: https://gitlab.freedesktop.org/pixman/pixman/-/issues/63 +--- + pixman/pixman-trap.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/pixman/pixman-trap.c b/pixman/pixman-trap.c +index 91766fd..7560405 100644 +--- a/pixman/pixman-trap.c ++++ b/pixman/pixman-trap.c +@@ -74,7 +74,7 @@ pixman_sample_floor_y (pixman_fixed_t y, + + if (f < Y_FRAC_FIRST (n)) + { +- if (pixman_fixed_to_int (i) == 0x8000) ++ if (pixman_fixed_to_int (i) == 0xffff8000) + { + f = 0; /* saturate */ + } +-- +GitLab + diff --git a/meta/recipes-graphics/xorg-lib/pixman_0.40.0.bb b/meta/recipes-graphics/xorg-lib/pixman_0.40.0.bb index ccfe2777466..c56733eefd6 100644 --- a/meta/recipes-graphics/xorg-lib/pixman_0.40.0.bb +++ b/meta/recipes-graphics/xorg-lib/pixman_0.40.0.bb @@ -9,6 +9,7 @@ DEPENDS = "zlib" SRC_URI = "https://www.cairographics.org/releases/${BP}.tar.gz \ file://0001-ARM-qemu-related-workarounds-in-cpu-features-detecti.patch \ + file://CVE-2022-44638.patch \ " SRC_URI[md5sum] = "73858c0862dd9896fb5f62ae267084a4" SRC_URI[sha256sum] = "6d200dec3740d9ec4ec8d1180e25779c00bc749f94278c8b9021f5534db223fc" -- 2.34.1
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