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| author |   Marta Rybczynska <rybczynska@gmail.com> | 2022-02-18 11:05:37 +0100 |
|---|---|---|
| committer |   Steve Sakoman <steve@sakoman.com> | 2022-02-23 05:00:42 -1000 |
| commit | e58e6e646c2efb91dba3ffa6db3a43b7972f0c87 (patch) | |
| tree | 4720f48ca3e23af8f7ba4316648fcbe53c855e7c | |
| parent | a9d0155842f0582a0d247c81bf972661f0a2cda8 (diff) | |
| download | openembedded-core-e58e6e646c2efb91dba3ffa6db3a43b7972f0c87.tar.gz | |
grub: add a fix for a memory leak
This patch adds a fix for a memory leak in grub's normal/completion.
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/0029-normal-completion-Fix-leaking-of-memory-when-process.patch | 52 | ||||
| -rw-r--r-- | meta/recipes-bsp/grub/grub2.inc | 1 |
2 files changed, 53 insertions, 0 deletions
diff --git a/meta/recipes-bsp/grub/files/0029-normal-completion-Fix-leaking-of-memory-when-process.patch b/meta/recipes-bsp/grub/files/0029-normal-completion-Fix-leaking-of-memory-when-process.patch new file mode 100644 index 0000000000..8a26e5bc5b --- /dev/null +++ b/meta/recipes-bsp/grub/files/0029-normal-completion-Fix-leaking-of-memory-when-process.patch @@ -0,0 +1,52 @@ +From 2367049d2021e00d82d19cee923e06a4b04ebc30 Mon Sep 17 00:00:00 2001 +From: Darren Kenny <darren.kenny@oracle.com> +Date: Fri, 4 Dec 2020 18:56:48 +0000 +Subject: [PATCH] normal/completion: Fix leaking of memory when processing a + completion + +It is possible for the code to reach the end of the function without +freeing the memory allocated to argv and argc still to be 0. + +We should always call grub_free(argv). The grub_free() will handle +a NULL argument correctly if it reaches that code without the memory +being allocated. + +Fixes: CID 96672 + +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=9213575b7a95b514bce80be5964a28d407d7d56d] +Signed-off-by: Marta Rybczynska <marta.rybczynska@huawei.com> +--- + grub-core/normal/completion.c | 10 ++++------ + 1 file changed, 4 insertions(+), 6 deletions(-) + +diff --git a/grub-core/normal/completion.c b/grub-core/normal/completion.c +index 5961028..46e473c 100644 +--- a/grub-core/normal/completion.c ++++ b/grub-core/normal/completion.c +@@ -400,8 +400,8 @@ char * + grub_normal_do_completion (char *buf, int *restore, + void (*hook) (const char *, grub_completion_type_t, int)) + { +- int argc; +- char **argv; ++ int argc = 0; ++ char **argv = NULL; + + /* Initialize variables. */ + match = 0; +@@ -516,10 +516,8 @@ grub_normal_do_completion (char *buf, int *restore, + + fail: + if (argc != 0) +- { +- grub_free (argv[0]); +- grub_free (argv); +- } ++ grub_free (argv[0]); ++ grub_free (argv); + grub_free (match); + grub_errno = GRUB_ERR_NONE; + diff --git a/meta/recipes-bsp/grub/grub2.inc b/meta/recipes-bsp/grub/grub2.inc index c965f0fd15..1460e559b9 100644 --- a/meta/recipes-bsp/grub/grub2.inc +++ b/meta/recipes-bsp/grub/grub2.inc @@ -75,6 +75,7 @@ SRC_URI = "${GNU_MIRROR}/grub/grub-${PV}.tar.gz \ file://0026-libgcrypt-mpi-Fix-possible-unintended-sign-extension.patch \ file://0027-libgcrypt-mpi-Fix-possible-NULL-dereference.patch \ file://0028-syslinux-Fix-memory-leak-while-parsing.patch \ + file://0029-normal-completion-Fix-leaking-of-memory-when-process.patch \ " SRC_URI[md5sum] = "5ce674ca6b2612d8939b9e6abed32934" SRC_URI[sha256sum] = "f10c85ae3e204dbaec39ae22fa3c5e99f0665417e91c2cb49b7e5031658ba6ea" |