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38ea2b3ed0
commit 1165affd484889d4986cf3b724318935a0b120d8 upstream. syzbot found general protection fault in crypto_destroy_tfm()[1]. It was caused by wrong clean up loop in llsec_key_alloc(). If one of the tfm array members is in IS_ERR() range it will cause general protection fault in clean up function [1]. Call Trace: crypto_free_aead include/crypto/aead.h:191 [inline] [1] llsec_key_alloc net/mac802154/llsec.c:156 [inline] mac802154_llsec_key_add+0x9e0/0xcc0 net/mac802154/llsec.c:249 ieee802154_add_llsec_key+0x56/0x80 net/mac802154/cfg.c:338 rdev_add_llsec_key net/ieee802154/rdev-ops.h:260 [inline] nl802154_add_llsec_key+0x3d3/0x560 net/ieee802154/nl802154.c:1584 genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:739 genl_family_rcv_msg net/netlink/genetlink.c:783 [inline] genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:800 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2502 genl_rcv+0x24/0x40 net/netlink/genetlink.c:811 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae Signed-off-by: Pavel Skripkin <paskripkin@gmail.com> Reported-by: syzbot+9ec037722d2603a9f52e@syzkaller.appspotmail.com Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/r/20210304152125.1052825-1-paskripkin@gmail.com Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.