CVE-2022-50363: In the Linux kernel, the following vulnerability has been resolved: skmsg: pass gfp argument to alloc_sk_msg() syzbot found that alloc_sk_msg() could be called…

PriorityP422medium5.5CVSS 3.1

AVLACLPRLUINSUCNINAH

EPSS

0.37%

30.0th percentile

In the Linux kernel, the following vulnerability has been resolved: skmsg: pass gfp argument to alloc_sk_msg() syzbot found that alloc_sk_msg() could be called from a non sleepable context. sk_psock_verdict_recv() uses rcu_read_lock() protection. We need the callers to pass a gfp_t argument to avoid issues. syzbot report was: BUG: sleeping function called from invalid context at include/linux/sched/mm.h:274 in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 3613, name: syz-executor414 preempt_count: 0, expected: 0 RCU nest depth: 1, expected: 0 INFO: lockdep is turned off. CPU: 0 PID: 3613 Comm: syz-executor414 Not tainted 6.0.0-syzkaller-09589-g55be6084c8e0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 __might_resched+0x538/0x6a0 kernel/sched/core.c:9877 might_alloc include/linux/sched/mm.h:274 [inline] slab_pre_alloc_hook mm/slab.h:700 [inline] slab_alloc_node mm/slub.c:3162 [inline] slab_alloc mm/slub.c:3256 [inline] kmem_cache_alloc_trace+0x59/0x310 mm/slub.c:3287 kmalloc include/linux/slab.h:600 [inline] kzalloc include/linux/slab.h:733 [inline] alloc_sk_msg net/core/skmsg.c:507 [inline] sk_psock_skb_ingress_self+0x5c/0x330 net/core/skmsg.c:600 sk_psock_verdict_apply+0x395/0x440 net/core/skmsg.c:1014 sk_psock_verdict_recv+0x34d/0x560 net/core/skmsg.c:1201 tcp_read_skb+0x4a1/0x790 net/ipv4/tcp.c:1770 tcp_rcv_established+0x129d/0x1a10 net/ipv4/tcp_input.c:5971 tcp_v4_do_rcv+0x479/0xac0 net/ipv4/tcp_ipv4.c:1681 sk_backlog_rcv include/net/sock.h:1109 [inline] __release_sock+0x1d8/0x4c0 net/core/sock.c:2906 release_sock+0x5d/0x1c0 net/core/sock.c:3462 tcp_sendmsg+0x36/0x40 net/ipv4/tcp.c:1483 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] __sys_sendto+0x46d/0x5f0 net/socket.c:2117 __do_sys_sendto net/socket.c:2129 [inline] __se_sys_sendto net/socket.c:2125 [inline] __x64_sy

Affected

9 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 6.0.6-1 (bookworm)	linux 6.0.6-1 (bookworm)
linux	linux	—	—
linux	linux	>= 43312915b5ba20741617dd2119e835205fa8580c < 693ddd6ffc05b228ea1638f9d757c5d3541f9446	693ddd6ffc05b228ea1638f9d757c5d3541f9446
linux	linux	>= 43312915b5ba20741617dd2119e835205fa8580c < 2d1f274b95c6e4ba6a813b3b8e7a1a38d54a0a08	2d1f274b95c6e4ba6a813b3b8e7a1a38d54a0a08
linux	linux_kernel	—	—
linux	linux_kernel	>= 0 < 6.0.6-1	6.0.6-1
linux	linux_kernel	>= 0 < 6.0.6-1	6.0.6-1
linux	linux_kernel	>= 0 < 6.0.6-1	6.0.6-1
linux	linux_kernel	>= 6.0 < 6.0.6	6.0.6

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

osv5.5MEDIUM

vendor_debian5.5MEDIUM

vendor_redhat5.5MEDIUM

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