diff options
Diffstat (limited to 'gnu/packages/patches/gdk-pixbuf-CVE-2020-29385.patch')
| -rw-r--r-- | gnu/packages/patches/gdk-pixbuf-CVE-2020-29385.patch | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/gnu/packages/patches/gdk-pixbuf-CVE-2020-29385.patch b/gnu/packages/patches/gdk-pixbuf-CVE-2020-29385.patch deleted file mode 100644 index e6ac4de00b..0000000000 --- a/gnu/packages/patches/gdk-pixbuf-CVE-2020-29385.patch +++ /dev/null @@ -1,53 +0,0 @@ -Fix CVE-2020-29385. Note that we omit the binary test file -tests/test-images/fail/hang_114.gif from the following commit, to avoid -requiring 'git' to apply the patch. - - -From bdd3acbd48a575d418ba6bf1b32d7bda2fae1c81 Mon Sep 17 00:00:00 2001 -From: Robert Ancell <robert.ancell@canonical.com> -Date: Mon, 30 Nov 2020 12:26:12 +1300 -Subject: [PATCH] gif: Fix LZW decoder accepting invalid LZW code. - -The code value after a reset wasn't being validated, which means we would -accept invalid codes. This could cause an infinite loop in the decoder. - -Fixes CVE-2020-29385 - -Fixes https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/issues/164 ---- - gdk-pixbuf/lzw.c | 13 +++++++------ - tests/test-images/fail/hang_114.gif | Bin 0 -> 5561 bytes - 2 files changed, 7 insertions(+), 6 deletions(-) - create mode 100644 tests/test-images/fail/hang_114.gif - -diff --git a/gdk-pixbuf/lzw.c b/gdk-pixbuf/lzw.c -index 9e052a6f7..105daf2b1 100644 ---- a/gdk-pixbuf/lzw.c -+++ b/gdk-pixbuf/lzw.c -@@ -195,19 +195,20 @@ lzw_decoder_feed (LZWDecoder *self, - if (self->last_code != self->clear_code && self->code_table_size < MAX_CODES) { - if (self->code < self->code_table_size) - add_code (self, self->code); -- else if (self->code == self->code_table_size) -+ else - add_code (self, self->last_code); -- else { -- /* Invalid code received - just stop here */ -- self->last_code = self->eoi_code; -- return output_length; -- } - - /* When table is full increase code size */ - if (self->code_table_size == (1 << self->code_size) && self->code_size < LZW_CODE_MAX) - self->code_size++; - } - -+ /* Invalid code received - just stop here */ -+ if (self->code >= self->code_table_size) { -+ self->last_code = self->eoi_code; -+ return output_length; -+ } -+ - /* Convert codeword into indexes */ - n_written += write_indexes (self, output + n_written, output_length - n_written); - } |