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Eric Dumazet 4236bf4716 team: better TEAM_OPTION_TYPE_STRING validation 
[ Upstream commit 5bef3ac184 ]

syzbot reported following splat [1]

Make sure user-provided data contains one nul byte.

[1]
 BUG: KMSAN: uninit-value in string_nocheck lib/vsprintf.c:633 [inline]
 BUG: KMSAN: uninit-value in string+0x3ec/0x5f0 lib/vsprintf.c:714
  string_nocheck lib/vsprintf.c:633 [inline]
  string+0x3ec/0x5f0 lib/vsprintf.c:714
  vsnprintf+0xa5d/0x1960 lib/vsprintf.c:2843
  __request_module+0x252/0x9f0 kernel/module/kmod.c:149
  team_mode_get drivers/net/team/team_core.c:480 [inline]
  team_change_mode drivers/net/team/team_core.c:607 [inline]
  team_mode_option_set+0x437/0x970 drivers/net/team/team_core.c:1401
  team_option_set drivers/net/team/team_core.c:375 [inline]
  team_nl_options_set_doit+0x1339/0x1f90 drivers/net/team/team_core.c:2662
  genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline]
  genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]
  genl_rcv_msg+0x1214/0x12c0 net/netlink/genetlink.c:1210
  netlink_rcv_skb+0x375/0x650 net/netlink/af_netlink.c:2543
  genl_rcv+0x40/0x60 net/netlink/genetlink.c:1219
  netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline]
  netlink_unicast+0xf52/0x1260 net/netlink/af_netlink.c:1348
  netlink_sendmsg+0x10da/0x11e0 net/netlink/af_netlink.c:1892
  sock_sendmsg_nosec net/socket.c:718 [inline]
  __sock_sendmsg+0x30f/0x380 net/socket.c:733
  ____sys_sendmsg+0x877/0xb60 net/socket.c:2573
  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2627
  __sys_sendmsg net/socket.c:2659 [inline]
  __do_sys_sendmsg net/socket.c:2664 [inline]
  __se_sys_sendmsg net/socket.c:2662 [inline]
  __x64_sys_sendmsg+0x212/0x3c0 net/socket.c:2662
  x64_sys_call+0x2ed6/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:47
  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Fixes: 3d249d4ca7 ("net: introduce ethernet teaming device")
Reported-by: syzbot+1fcd957a82e3a1baa94d@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=1fcd957a82e3a1baa94d
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20250212134928.1541609-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-02-21 14:01:18 +01:00
arch LoongArch: KVM: Fix typo issue about GCFG feature detection 2025-02-21 14:01:17 +01:00
block block: don't revert iter for -EIOCBQUEUED 2025-02-17 10:05:19 +01:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: api - Fix boot-up self-test race 2025-02-08 09:57:28 +01:00
Documentation Documentation/networking: fix basic node example document ISO 15765-2 2025-02-21 14:01:16 +01:00
drivers team: better TEAM_OPTION_TYPE_STRING validation 2025-02-21 14:01:18 +01:00
fs nfsd: validate the nfsd_serv pointer before calling svc_wake_up 2025-02-21 14:01:14 +01:00
include vrf: use RCU protection in l3mdev_l3_out() 2025-02-21 14:01:16 +01:00
init Compiler Attributes: disable __counted_by for clang < 19.1.3 2024-12-05 14:02:45 +01:00
io_uring io_uring/net: don't retry connect operation on EPOLLERR 2025-02-17 10:05:38 +01:00
ipc ipc: fix memleak if msg_init_ns failed in create_ipc_ns 2024-12-05 14:03:02 +01:00
kernel timers/migration: Fix off-by-one root mis-connection 2025-02-17 10:05:44 +01:00
lib maple_tree: simplify split calculation 2025-02-17 10:05:42 +01:00
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm mm/compaction: fix UBSAN shift-out-of-bounds warning 2025-02-17 10:05:36 +01:00
net ndisc: ndisc_send_redirect() must use dev_get_by_index_rcu() 2025-02-21 14:01:16 +01:00
rust rust: init: use explicit ABI to clean warning in future compilers 2025-02-17 10:05:23 +01:00
samples samples/landlock: Fix possible NULL dereference in parse_path() 2025-02-08 09:57:11 +01:00
scripts scripts/Makefile.extrawarn: Do not show clang's non-kprintf warnings at W=1 2025-02-21 14:01:15 +01:00
security KEYS: trusted: dcp: fix improper sg use with CONFIG_VMAP_STACK=y 2025-02-17 10:05:09 +01:00
sound ALSA: hda: Fix headset detection failure due to unstable sort 2025-02-17 10:05:20 +01:00
tools Revert "selftests/sched_ext: fix build after renames in sched_ext API" 2025-02-17 10:05:47 +01:00
usr initramfs: shorten cmd_initfs in usr/Makefile 2024-07-16 01:07:52 +09:00
virt KVM: x86: switch hugepage recovery thread to vhost_task 2024-12-05 14:02:43 +01:00
.clang-format clang-format: Update with v6.11-rc1's for_each macro list 2024-08-02 13:20:31 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore Add Jeff Kirsher to .get_maintainer.ignore 2024-03-08 11:36:54 +00:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore Kbuild updates for v6.12 2024-09-24 13:02:06 -07:00
.mailmap mailmap: add entry for Thorsten Blum 2024-11-07 14:14:59 -08:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Remove self from DSA entry 2024-11-03 12:52:38 -08:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS MAINTAINERS: update location of media main tree 2024-12-05 14:02:42 +01:00
Makefile Linux 6.12.15 2025-02-18 09:34:42 +01:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

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 reStructuredText 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.