This change fixes a memory leak on error in grub_efi_get_filename(). 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.rybczyn...@huawei.com> --- ...-kern-efi-Fix-memory-leak-on-failure.patch | 30 +++++++++++++++++++ meta/recipes-bsp/grub/grub2.inc | 1 + 2 files changed, 31 insertions(+) create mode 100644 meta/recipes-bsp/grub/files/0006-kern-efi-Fix-memory-leak-on-failure.patch diff --git a/meta/recipes-bsp/grub/files/0006-kern-efi-Fix-memory-leak-on-failure.patch b/meta/recipes-bsp/grub/files/0006-kern-efi-Fix-memory-leak-on-failure.patch new file mode 100644 index 0000000000..9d7327cee6 --- /dev/null +++ b/meta/recipes-bsp/grub/files/0006-kern-efi-Fix-memory-leak-on-failure.patch @@ -0,0 +1,30 @@ +From d4fd0243920b71cc6e03cc0cadf23b4fe03c352f Mon Sep 17 00:00:00 2001 +From: Darren Kenny <darren.ke...@oracle.com> +Date: Thu, 5 Nov 2020 10:15:25 +0000 +Subject: [PATCH] kern/efi: Fix memory leak on failure + +Free the memory allocated to name before returning on failure. + +Fixes: CID 296222 + +Signed-off-by: Darren Kenny <darren.ke...@oracle.com> +Reviewed-by: Daniel Kiper <daniel.ki...@oracle.com> + +Upstream-Status: Backport [https://git.savannah.gnu.org/cgit/grub.git/commit/?id=ed286ceba6015d37a9304f04602451c47bf195d7] +Signed-off-by: Marta Rybczynska <marta.rybczyn...@huawei.com> +--- + grub-core/kern/efi/efi.c | 1 + + 1 file changed, 1 insertion(+) + +diff --git a/grub-core/kern/efi/efi.c b/grub-core/kern/efi/efi.c +index 6a38080..baeeef0 100644 +--- a/grub-core/kern/efi/efi.c ++++ b/grub-core/kern/efi/efi.c +@@ -415,6 +415,7 @@ grub_efi_get_filename (grub_efi_device_path_t *dp0) + { + grub_error (GRUB_ERR_OUT_OF_RANGE, + "malformed EFI Device Path node has length=%d", len); ++ grub_free (name); + return NULL; + } + diff --git a/meta/recipes-bsp/grub/grub2.inc b/meta/recipes-bsp/grub/grub2.inc index f7f2aa892f..04ed8b7b23 100644 --- a/meta/recipes-bsp/grub/grub2.inc +++ b/meta/recipes-bsp/grub/grub2.inc @@ -52,6 +52,7 @@ SRC_URI = "${GNU_MIRROR}/grub/grub-${PV}.tar.gz \ file://0003-net-tftp-Fix-dangling-memory-pointer.patch \ file://0004-kern-parser-Fix-resource-leak-if-argc-0.patch \ file://0005-efi-Fix-some-malformed-device-path-arithmetic-errors.patch \ + file://0006-kern-efi-Fix-memory-leak-on-failure.patch \ " SRC_URI[md5sum] = "5ce674ca6b2612d8939b9e6abed32934" SRC_URI[sha256sum] = "f10c85ae3e204dbaec39ae22fa3c5e99f0665417e91c2cb49b7e5031658ba6ea" -- 2.33.0
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