diff options
Diffstat (limited to 'gnu/packages/patches/jbig2dec-CVE-2017-7975.patch')
| -rw-r--r-- | gnu/packages/patches/jbig2dec-CVE-2017-7975.patch | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/gnu/packages/patches/jbig2dec-CVE-2017-7975.patch b/gnu/packages/patches/jbig2dec-CVE-2017-7975.patch new file mode 100644 index 0000000000..c83fe9d9f2 --- /dev/null +++ b/gnu/packages/patches/jbig2dec-CVE-2017-7975.patch @@ -0,0 +1,40 @@ +Fix CVE-2017-7975: + +https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7975 +https://bugs.ghostscript.com/show_bug.cgi?id=697693 + +Patch copied from upstream source repository: + +https://git.ghostscript.com/?p=jbig2dec.git;a=commit;h=f8992b8fe65c170c8624226f127c5c4bfed42c66 + +From f8992b8fe65c170c8624226f127c5c4bfed42c66 Mon Sep 17 00:00:00 2001 +From: Shailesh Mistry <shailesh.mistry@hotmail.co.uk> +Date: Wed, 26 Apr 2017 22:12:14 +0100 +Subject: [PATCH] Bug 697693: Prevent SEGV due to integer overflow. + +While building a Huffman table, the start and end points were susceptible +to integer overflow. + +Thank you to Jiaqi for finding this issue and suggesting a patch. +--- + jbig2_huffman.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/jbig2_huffman.c b/jbig2_huffman.c +index 511e461..b4189a1 100644 +--- a/jbig2_huffman.c ++++ b/jbig2_huffman.c +@@ -421,8 +421,8 @@ jbig2_build_huffman_table(Jbig2Ctx *ctx, const Jbig2HuffmanParams *params) + + if (PREFLEN == CURLEN) { + int RANGELEN = lines[CURTEMP].RANGELEN; +- int start_j = CURCODE << shift; +- int end_j = (CURCODE + 1) << shift; ++ uint32_t start_j = CURCODE << shift; ++ uint32_t end_j = (CURCODE + 1) << shift; + byte eflags = 0; + + if (end_j > max_j) { +-- +2.13.0 + |