diff options
| author | Mark H Weaver <mhw@netris.org> | 2016-11-16 02:14:28 -0500 |
|---|---|---|
| committer | Mark H Weaver <mhw@netris.org> | 2016-11-16 13:03:56 -0500 |
| commit | 56ac2bf442c0639f498cdea2db4f3e57cdb49140 (patch) | |
| tree | 1ea1fe05b026b37623c7ac0400c2367c96184411 /gnu/packages/patches/pixman-CVE-2016-5296.patch | |
| parent | 05ceb8dcaf480a47cddf94ac979070b76df6556c (diff) | |
| download | guix-patches-56ac2bf442c0639f498cdea2db4f3e57cdb49140.tar guix-patches-56ac2bf442c0639f498cdea2db4f3e57cdb49140.tar.gz | |
gnu: pixman: Add fix for CVE-2016-5296.
* gnu/packages/patches/pixman-CVE-2016-5296.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/xdisorg.scm (pixman)[replacement]: New field.
(pixman/fixed): New variable.
Diffstat (limited to 'gnu/packages/patches/pixman-CVE-2016-5296.patch')
| -rw-r--r-- | gnu/packages/patches/pixman-CVE-2016-5296.patch | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/gnu/packages/patches/pixman-CVE-2016-5296.patch b/gnu/packages/patches/pixman-CVE-2016-5296.patch new file mode 100644 index 0000000000..21942326ae --- /dev/null +++ b/gnu/packages/patches/pixman-CVE-2016-5296.patch @@ -0,0 +1,19 @@ +Fix CVE-2016-5296: Heap-buffer-overflow WRITE in rasterize_edges_1 +Adapted for upstream pixman based on: + + https://hg.mozilla.org/releases/mozilla-esr45/rev/5e39c1c2fded + +--- pixman-0.34.0/pixman/pixman-edge-imp.h.orig 2015-06-30 05:48:31.000000000 -0400 ++++ pixman-0.34.0/pixman/pixman-edge-imp.h 2016-11-16 01:09:34.046335106 -0500 +@@ -55,8 +55,9 @@ + * + * (The AA case does a similar adjustment in RENDER_SAMPLES_X) + */ +- lx += X_FRAC_FIRST(1) - pixman_fixed_e; +- rx += X_FRAC_FIRST(1) - pixman_fixed_e; ++ /* we cast to unsigned to get defined behaviour for overflow */ ++ lx = (unsigned)lx + X_FRAC_FIRST(1) - pixman_fixed_e; ++ rx = (unsigned)rx + X_FRAC_FIRST(1) - pixman_fixed_e; + #endif + /* clip X */ + if (lx < 0) |