diff options
author | Efraim Flashner <efraim@flashner.co.il> | 2022-08-09 22:05:28 +0300 |
---|---|---|
committer | Efraim Flashner <efraim@flashner.co.il> | 2022-08-09 22:13:33 +0300 |
commit | 468c95e9415bc303cfa36c9b67bbd2ce0abe904b (patch) | |
tree | 54a2213343402c9e58ef048b1d6ffbc0e2487a6a /gnu/packages/patches | |
parent | 26af06b66b65354a46b2196d1c11c90168b7fa12 (diff) |
gnu: aspell: Patch CVE-2019-25051.
* gnu/packages/aspell.scm (aspell)[source]: Add patch.
* gnu/packages/patches/aspell-CVE-2019-25051.patch: New file.
* gnu/local.mk (dist_patch_DATA): Register it.
Diffstat (limited to 'gnu/packages/patches')
-rw-r--r-- | gnu/packages/patches/aspell-CVE-2019-25051.patch | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/gnu/packages/patches/aspell-CVE-2019-25051.patch b/gnu/packages/patches/aspell-CVE-2019-25051.patch new file mode 100644 index 0000000000..a7471dacd4 --- /dev/null +++ b/gnu/packages/patches/aspell-CVE-2019-25051.patch @@ -0,0 +1,99 @@ +https://github.com/gnuaspell/aspell/commit/0718b375425aad8e54e1150313b862e4c6fd324a +https://nvd.nist.gov/vuln/detail/CVE-2019-25051 + +From 0718b375425aad8e54e1150313b862e4c6fd324a Mon Sep 17 00:00:00 2001 +From: Kevin Atkinson <kevina@gnu.org> +Date: Sat, 21 Dec 2019 20:32:47 +0000 +Subject: [PATCH] objstack: assert that the alloc size will fit within a chunk + to prevent a buffer overflow + +Bug found using OSS-Fuze. +--- + common/objstack.hpp | 18 ++++++++++++++---- + 1 file changed, 14 insertions(+), 4 deletions(-) + +diff --git a/common/objstack.hpp b/common/objstack.hpp +index 3997bf7..bd97ccd 100644 +--- a/common/objstack.hpp ++++ b/common/objstack.hpp +@@ -5,6 +5,7 @@ + #include "parm_string.hpp" + #include <stdlib.h> + #include <assert.h> ++#include <stddef.h> + + namespace acommon { + +@@ -26,6 +27,12 @@ class ObjStack + byte * temp_end; + void setup_chunk(); + void new_chunk(); ++ bool will_overflow(size_t sz) const { ++ return offsetof(Node,data) + sz > chunk_size; ++ } ++ void check_size(size_t sz) { ++ assert(!will_overflow(sz)); ++ } + + ObjStack(const ObjStack &); + void operator=(const ObjStack &); +@@ -56,7 +63,7 @@ class ObjStack + void * alloc_bottom(size_t size) { + byte * tmp = bottom; + bottom += size; +- if (bottom > top) {new_chunk(); tmp = bottom; bottom += size;} ++ if (bottom > top) {check_size(size); new_chunk(); tmp = bottom; bottom += size;} + return tmp; + } + // This alloc_bottom will insure that the object is aligned based on the +@@ -66,7 +73,7 @@ class ObjStack + align_bottom(align); + byte * tmp = bottom; + bottom += size; +- if (bottom > top) {new_chunk(); goto loop;} ++ if (bottom > top) {check_size(size); new_chunk(); goto loop;} + return tmp; + } + char * dup_bottom(ParmString str) { +@@ -79,7 +86,7 @@ class ObjStack + // always be aligned as such. + void * alloc_top(size_t size) { + top -= size; +- if (top < bottom) {new_chunk(); top -= size;} ++ if (top < bottom) {check_size(size); new_chunk(); top -= size;} + return top; + } + // This alloc_top will insure that the object is aligned based on +@@ -88,7 +95,7 @@ class ObjStack + {loop: + top -= size; + align_top(align); +- if (top < bottom) {new_chunk(); goto loop;} ++ if (top < bottom) {check_size(size); new_chunk(); goto loop;} + return top; + } + char * dup_top(ParmString str) { +@@ -117,6 +124,7 @@ class ObjStack + void * alloc_temp(size_t size) { + temp_end = bottom + size; + if (temp_end > top) { ++ check_size(size); + new_chunk(); + temp_end = bottom + size; + } +@@ -131,6 +139,7 @@ class ObjStack + } else { + size_t s = temp_end - bottom; + byte * p = bottom; ++ check_size(size); + new_chunk(); + memcpy(bottom, p, s); + temp_end = bottom + size; +@@ -150,6 +159,7 @@ class ObjStack + } else { + size_t s = temp_end - bottom; + byte * p = bottom; ++ check_size(size); + new_chunk(); + memcpy(bottom, p, s); + temp_end = bottom + size; |