diff options
| author | Tadeusz Struk <tadeusz.struk@linaro.org> | 2022-03-10 15:25:38 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-03-11 17:11:38 -0800 |
| commit | 5e34af4142ffe68f01c8a9acae83300f8911e20c (patch) | |
| tree | bb1d7d9398f866ca1a2264e7a1118ef638501381 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | 186d32bbf034417b40e2b4e773eeb8ef106c16c1 (diff) | |
net: ipv6: fix skb_over_panic in __ip6_append_data
Syzbot found a kernel bug in the ipv6 stack:
LINK: https://syzkaller.appspot.com/bug?id=205d6f11d72329ab8d62a610c44c5e7e25415580
The reproducer triggers it by sending a crafted message via sendmmsg()
call, which triggers skb_over_panic, and crashes the kernel:
skbuff: skb_over_panic: text:ffffffff84647fb4 len:65575 put:65575
head:ffff888109ff0000 data:ffff888109ff0088 tail:0x100af end:0xfec0
dev:<NULL>
Update the check that prevents an invalid packet with MTU equal
to the fregment header size to eat up all the space for payload.
The reproducer can be found here:
LINK: https://syzkaller.appspot.com/text?tag=ReproC&x=1648c83fb00000
Reported-by: syzbot+e223cf47ec8ae183f2a0@syzkaller.appspotmail.com
Signed-off-by: Tadeusz Struk <tadeusz.struk@linaro.org>
Acked-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20220310232538.1044947-1-tadeusz.struk@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions