diff options
Diffstat (limited to 'meta/recipes-extended/ghostscript/ghostscript/CVE-2017-7975.patch')
| -rw-r--r-- | meta/recipes-extended/ghostscript/ghostscript/CVE-2017-7975.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/meta/recipes-extended/ghostscript/ghostscript/CVE-2017-7975.patch b/meta/recipes-extended/ghostscript/ghostscript/CVE-2017-7975.patch new file mode 100644 index 0000000000..d0886c9120 --- /dev/null +++ b/meta/recipes-extended/ghostscript/ghostscript/CVE-2017-7975.patch @@ -0,0 +1,36 @@ +From 5e57e483298dae8b8d4ec9aab37a526736ac2e97 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. + +Upstream-Status: Backport +CVE: CVE-2017-7975 + +Signed-off-by: Catalin Enache <catalin.enache@windriver.com> +--- + jbig2dec/jbig2_huffman.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/jbig2dec/jbig2_huffman.c b/jbig2dec/jbig2_huffman.c +index 511e461..b4189a1 100644 +--- a/jbig2dec/jbig2_huffman.c ++++ b/jbig2dec/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) { +-- +2.10.2 + |