This is a note to let you know that I've just added the patch titled arm64: kexec_file: fix memory leakage in create_dtb() when fdt_open_into() fails to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: arm64-kexec_file-fix-memory-leakage-in-create_dtb-when-fdt_open_into-fails.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 656d1d58d8e0958d372db86c24f0b2ea36f50888 Mon Sep 17 00:00:00 2001 From: qiuguorui1 <qiuguorui1@xxxxxxxxxx> Date: Thu, 18 Feb 2021 20:59:00 +0800 Subject: arm64: kexec_file: fix memory leakage in create_dtb() when fdt_open_into() fails From: qiuguorui1 <qiuguorui1@xxxxxxxxxx> commit 656d1d58d8e0958d372db86c24f0b2ea36f50888 upstream. in function create_dtb(), if fdt_open_into() fails, we need to vfree buf before return. Fixes: 52b2a8af7436 ("arm64: kexec_file: load initrd and device-tree") Cc: stable@xxxxxxxxxxxxxxx # v5.0 Signed-off-by: qiuguorui1 <qiuguorui1@xxxxxxxxxx> Link: https://lore.kernel.org/r/20210218125900.6810-1-qiuguorui1@xxxxxxxxxx Signed-off-by: Will Deacon <will@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/arm64/kernel/machine_kexec_file.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/arch/arm64/kernel/machine_kexec_file.c +++ b/arch/arm64/kernel/machine_kexec_file.c @@ -182,8 +182,10 @@ static int create_dtb(struct kimage *ima /* duplicate a device tree blob */ ret = fdt_open_into(initial_boot_params, buf, buf_size); - if (ret) + if (ret) { + vfree(buf); return -EINVAL; + } ret = setup_dtb(image, initrd_load_addr, initrd_len, cmdline, buf); Patches currently in stable-queue which might be from qiuguorui1@xxxxxxxxxx are queue-5.10/arm64-kexec_file-fix-memory-leakage-in-create_dtb-when-fdt_open_into-fails.patch