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authorHaimin Zhang <tcs_kernel@tencent.com>2022-03-08 11:20:28 +0800
committerSteffen Klassert <steffen.klassert@secunet.com>2022-03-10 07:39:47 +0100
commit9a564bccb78a76740ea9d75a259942df8143d02c (patch)
treeaf80e6330dcdb8be70d1d8e8059ad2d537780815 /lib/lz4
parent5f147476057832b8f87461ff6da35b5d2e1c2c29 (diff)
downloadlinux-9a564bccb78a76740ea9d75a259942df8143d02c.tar.gz
af_key: add __GFP_ZERO flag for compose_sadb_supported in function pfkey_register
Add __GFP_ZERO flag for compose_sadb_supported in function pfkey_register
to initialize the buffer of supp_skb to fix a kernel-info-leak issue.
1) Function pfkey_register calls compose_sadb_supported to request
a sk_buff. 2) compose_sadb_supported calls alloc_sbk to allocate
a sk_buff, but it doesn't zero it. 3) If auth_len is greater 0, then
compose_sadb_supported treats the memory as a struct sadb_supported and
begins to initialize. But it just initializes the field sadb_supported_len
and field sadb_supported_exttype without field sadb_supported_reserved.

Reported-by: TCS Robot <tcs_robot@tencent.com>
Signed-off-by: Haimin Zhang <tcs_kernel@tencent.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'lib/lz4')
0 files changed, 0 insertions, 0 deletions