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| author |   Marta Rybczynska <rybczynska@gmail.com> | 2022-02-18 11:05:35 +0100 |
|---|---|---|
| committer |   Steve Sakoman <steve@sakoman.com> | 2022-02-23 05:00:42 -1000 |
| commit | 33aa1a133cf2893a6d3a1f94bd098ee1c16a8abc (patch) | |
| tree | 5621fdcae3c6e4dbb15c6af6c849567a041643e3 | |
| parent | 69f6ae604b857eea93022d73fad668df07a7a056 (diff) | |
| download | openembedded-core-33aa1a133cf2893a6d3a1f94bd098ee1c16a8abc.tar.gz | |
grub: add a fix for a possible NULL dereference
This patch adds a fix for a possible NULL dereference in grub's
libgcrypt/mpi. It is a part of a security series [1].
[1] https://lists.gnu.org/archive/html/grub-devel/2021-03/msg00007.html
Signed-off-by: Marta Rybczynska <marta.rybczynska@huawei.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
| -rw-r--r-- | meta/recipes-bsp/grub/files/0027-libgcrypt-mpi-Fix-possible-NULL-dereference.patch | 33 | ||||
| -rw-r--r-- | meta/recipes-bsp/grub/grub2.inc | 1 |
2 files changed, 34 insertions, 0 deletions
diff --git a/meta/recipes-bsp/grub/files/0027-libgcrypt-mpi-Fix-possible-NULL-dereference.patch b/meta/recipes-bsp/grub/files/0027-libgcrypt-mpi-Fix-possible-NULL-dereference.patch new file mode 100644 index 0000000000..08299d021e --- /dev/null +++ b/meta/recipes-bsp/grub/files/0027-libgcrypt-mpi-Fix-possible-NULL-dereference.patch @@ -0,0 +1,33 @@ +From d26c8771293637b0465f2cb67d97cb58bacc62da Mon Sep 17 00:00:00 2001 +From: Darren Kenny <darren.kenny@oracle.com> +Date: Thu, 26 Nov 2020 10:41:54 +0000 +Subject: [PATCH] libgcrypt/mpi: Fix possible NULL dereference + +The code in gcry_mpi_scan() assumes that buffer is not NULL, but there +is no explicit check for that, so we add one. + +Fixes: CID 73757 + +Signed-off-by: Darren Kenny <darren.kenny@oracle.com> +Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com> + +Upstream-Status: Backport [https://git.savannah.gnu.org/cgit/grub.git/commit/?id=ae0f3fabeba7b393113d5dc185b6aff9b728136d] +Signed-off-by: Marta Rybczynska <marta.rybczynska@huawei.com> +--- + grub-core/lib/libgcrypt/mpi/mpicoder.c | 3 +++ + 1 file changed, 3 insertions(+) + +diff --git a/grub-core/lib/libgcrypt/mpi/mpicoder.c b/grub-core/lib/libgcrypt/mpi/mpicoder.c +index 7ecad27..6fe3891 100644 +--- a/grub-core/lib/libgcrypt/mpi/mpicoder.c ++++ b/grub-core/lib/libgcrypt/mpi/mpicoder.c +@@ -379,6 +379,9 @@ gcry_mpi_scan (struct gcry_mpi **ret_mpi, enum gcry_mpi_format format, + unsigned int len; + int secure = (buffer && gcry_is_secure (buffer)); + ++ if (!buffer) ++ return gcry_error (GPG_ERR_INV_ARG); ++ + if (format == GCRYMPI_FMT_SSH) + len = 0; + else diff --git a/meta/recipes-bsp/grub/grub2.inc b/meta/recipes-bsp/grub/grub2.inc index be35ac04ef..ef409bdd6a 100644 --- a/meta/recipes-bsp/grub/grub2.inc +++ b/meta/recipes-bsp/grub/grub2.inc @@ -73,6 +73,7 @@ SRC_URI = "${GNU_MIRROR}/grub/grub-${PV}.tar.gz \ file://0024-zfsinfo-Correct-a-check-for-error-allocating-memory.patch \ file://0025-affs-Fix-memory-leaks.patch \ file://0026-libgcrypt-mpi-Fix-possible-unintended-sign-extension.patch \ + file://0027-libgcrypt-mpi-Fix-possible-NULL-dereference.patch \ " SRC_URI[md5sum] = "5ce674ca6b2612d8939b9e6abed32934" SRC_URI[sha256sum] = "f10c85ae3e204dbaec39ae22fa3c5e99f0665417e91c2cb49b7e5031658ba6ea" |