glibc: fix CVE-2018-11237 Signed-off-by: Zheng Ruoqin <zhengrq.f...@cn.fujitsu.com> --- meta/recipes-core/glibc/glibc/CVE-2018-11237.patch | 83 ++++++++++++++++++++++ meta/recipes-core/glibc/glibc_2.27.bb | 1 + 2 files changed, 84 insertions(+) create mode 100644 meta/recipes-core/glibc/glibc/CVE-2018-11237.patch
diff --git a/meta/recipes-core/glibc/glibc/CVE-2018-11237.patch b/meta/recipes-core/glibc/glibc/CVE-2018-11237.patch new file mode 100644 index 0000000..33168be --- /dev/null +++ b/meta/recipes-core/glibc/glibc/CVE-2018-11237.patch @@ -0,0 +1,83 @@ +From 9aaaab7c6e4176e61c59b0a63c6ba906d875dc0e Mon Sep 17 00:00:00 2001 +From: Andreas Schwab <sch...@suse.de> +Date: Tue, 22 May 2018 10:37:59 +0200 +Subject: [PATCH] Don't write beyond destination in + __mempcpy_avx512_no_vzeroupper (bug 23196) + +When compiled as mempcpy, the return value is the end of the +estination +buffer, thus it cannot be used to refer to the start of it. + +2018-05-23 Andreas Schwab <sch...@suse.de> + + [BZ #23196] + CVE-2018-11237 + * sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S + (L(preloop_large)): Save initial destination pointer in %r11 and + use it instead of %rax after the loop. + * string/test-mempcpy.c (MIN_PAGE_SIZE): Define. + +CVE: CVE-2018-11237 +Upstream-Status: Backport +Signed-off-by: Zheng Ruoqin <zhengrq.f...@cn.fujitsu.com> +--- + ChangeLog | 9 +++++++++ + string/test-mempcpy.c | 1 + + sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S | 5 +++-- + 3 files changed, 13 insertions(+), 2 deletions(-) + +diff --git a/ChangeLog b/ChangeLog +index 23ff0ea..85f6d25 100644 +--- a/ChangeLog ++++ b/ChangeLog +@@ -1,3 +1,12 @@ ++2018-05-23 Andreas Schwab <sch...@suse.de> ++ ++ [BZ #23196] ++ CVE-2018-11237 ++ * sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S ++ (L(preloop_large)): Save initial destination pointer in %r11 and ++ use it instead of %rax after the loop. ++ * string/test-mempcpy.c (MIN_PAGE_SIZE): Define. ++ + 2018-02-22 Andrew Waterman <and...@sifive.com> + + [BZ # 22884] +diff --git a/string/test-mempcpy.c b/string/test-mempcpy.c +index c08fba8..d98ecdd 100644 +--- a/string/test-mempcpy.c ++++ b/string/test-mempcpy.c +@@ -18,6 +18,7 @@ + <http://www.gnu.org/licenses/>. */ + + #define MEMCPY_RESULT(dst, len) (dst) + (len) ++#define MIN_PAGE_SIZE 131072 + #define TEST_MAIN + #define TEST_NAME "mempcpy" + #include "test-string.h" +diff --git a/sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S b/sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S +index 23c0f7a..a55cf6f 100644 +--- a/sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S ++++ b/sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S +@@ -335,6 +335,7 @@ L(preloop_large): + ja L(preloop_large_bkw) + vmovups (%rsi), %zmm4 + vmovups 0x40(%rsi), %zmm5 ++ mov %rdi, %r11 + + /* Align destination for access with non-temporal stores in the loop. */ + mov %rdi, %r8 +@@ -366,8 +367,8 @@ L(gobble_256bytes_nt_loop): + cmp $256, %rdx + ja L(gobble_256bytes_nt_loop) + sfence +- vmovups %zmm4, (%rax) +- vmovups %zmm5, 0x40(%rax) ++ vmovups %zmm4, (%r11) ++ vmovups %zmm5, 0x40(%r11) + jmp L(check) + + L(preloop_large_bkw): +-- +1.8.3.1 + diff --git a/meta/recipes-core/glibc/glibc_2.27.bb b/meta/recipes-core/glibc/glibc_2.27.bb index c814798..59c9d07 100644 --- a/meta/recipes-core/glibc/glibc_2.27.bb +++ b/meta/recipes-core/glibc/glibc_2.27.bb @@ -45,6 +45,7 @@ SRC_URI = "${GLIBC_GIT_URI};branch=${SRCBRANCH};name=glibc \ file://0028-bits-siginfo-consts.h-enum-definition-for-TRAP_HWBKP.patch \ file://0029-Replace-strncpy-with-memccpy-to-fix-Wstringop-trunca.patch \ file://0030-plural_c_no_preprocessor_lines.patch \ + file://CVE-2018-11237.patch \ " NATIVESDKFIXES ?= "" -- 1.8.3.1 -- _______________________________________________ Openembedded-core mailing list Openembedded-core@lists.openembedded.org http://lists.openembedded.org/mailman/listinfo/openembedded-core
