CVE-2022-50706: In the Linux kernel, the following vulnerability has been resolved: net/ieee802154: don't warn zero-sized raw_sendmsg() syzbot is hitting skb_assert_len()…

PriorityP420low3.3

EPSS

0.18%

7.7th percentile

In the Linux kernel, the following vulnerability has been resolved: net/ieee802154: don't warn zero-sized raw_sendmsg() syzbot is hitting skb_assert_len() warning at __dev_queue_xmit() [1], for PF_IEEE802154 socket's zero-sized raw_sendmsg() request is hitting __dev_queue_xmit() with skb->len == 0. Since PF_IEEE802154 socket's zero-sized raw_sendmsg() request was able to return 0, don't call __dev_queue_xmit() if packet length is 0. #include #include int main(int argc, char *argv[]) { struct sockaddr_in addr = { .sin_family = AF_INET, .sin_addr.s_addr = htonl(INADDR_LOOPBACK) }; struct iovec iov = { }; struct msghdr hdr = { .msg_name = &addr, .msg_namelen = sizeof(addr), .msg_iov = &iov, .msg_iovlen = 1 }; sendmsg(socket(PF_IEEE802154, SOCK_RAW, 0), &hdr, 0); return 0; } Note that this might be a sign that commit fd1894224407c484 ("bpf: Don't redirect packets with invalid pkt_len") should be reverted, for skb->len == 0 was acceptable for at least PF_IEEE802154 socket.

Affected

21 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 6.0.3-1 (bookworm)	linux 6.0.3-1 (bookworm)
linux	linux	—	—
linux	linux	>= 5.10.141 < 5.10.150	5.10.150
linux	linux	>= 5.15.65 < 5.15.75	5.15.75
linux	linux	>= 5.19.7 < 5.19.17	5.19.17
linux	linux	>= 5.4.212 < 5.4.220	5.4.220
linux	linux	>= 6204bf78b2a903b96ba43afff6abc0b04d6e0462 < 791489a5c56396ddfed75fc525066d4738dace46	791489a5c56396ddfed75fc525066d4738dace46
linux	linux	>= 72f2dc8993f10262092745a88cb2dd0fef094f23 < df0da3fc131132b6c32a15c4da4ffa3a5aea1af2	df0da3fc131132b6c32a15c4da4ffa3a5aea1af2
linux	linux	>= 8b68e53d56697a59b5c53893b53f508bbdf272a0 < 4a36de8947794fa21435d1e916e089095f3246a8	4a36de8947794fa21435d1e916e089095f3246a8
linux	linux	>= a75987714bd2d8e59840667a28e15c1fa5c47554 < 34f31a2b667914ab701ca725554a0b447809d7ef	34f31a2b667914ab701ca725554a0b447809d7ef
linux	linux	>= fd1894224407c484f652ad456e1ce423e89bb3eb < 9974d220c5073d035b5469d1d8ecd71da86c7afd	9974d220c5073d035b5469d1d8ecd71da86c7afd
linux	linux	>= fd1894224407c484f652ad456e1ce423e89bb3eb < b12e924a2f5b960373459c8f8a514f887adf5cac	b12e924a2f5b960373459c8f8a514f887adf5cac
linux	linux_kernel	>= 0 < 5.10.158-1	5.10.158-1
linux	linux_kernel	>= 0 < 6.0.3-1	6.0.3-1
linux	linux_kernel	>= 0 < 6.0.3-1	6.0.3-1
linux	linux_kernel	>= 0 < 6.0.3-1	6.0.3-1
linux	linux_kernel	>= 0 < 5.4.220	5.4.220
linux	linux_kernel	>= 5.11.0 < 5.15.75	5.15.75
linux	linux_kernel	>= 5.16.0 < 5.19.17	5.19.17
linux	linux_kernel	>= 5.20.0 < 6.0.3	6.0.3
linux	linux_kernel	>= 5.5.0 < 5.10.150	5.10.150

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