CVE-2024-53118 Information

Description

In the Linux kernel the following vulnerability has been resolved:

vsock: Fix sk_error_queue memory leak

Kernel queues MSG_ZEROCOPY completion notifications on the error queue. Where they remain until explicitly recv()ed. To prevent memory leaks clean up the queue when the socket is destroyed.

unreferenced object 0xffff8881028beb00 (size 224): comm sock_test\ pid 1218 jiffies 4294694897 hex dump (first 32 bytes): 90 b0 21 17 81 88 ff ff 90 b0 21 17 81 88 ff ff ..!…….!….. 00 00 00 00 00 00 00 00 00 b0 21 17 81 88 ff ff ……….!….. backtrace (crc 6c7031ca): [] kmem_cache_alloc_node_noprof+0x2f7/0x370 [] __alloc_skb+0x132/0x180 [] sock_omalloc+0x4b/0x80 [] msg_zerocopy_realloc+0x9e/0x240 [] virtio_transport_send_pkt_info+0x412/0x4c0 [] virtio_transport_stream_enqueue+0x43/0x50 [] vsock_connectible_sendmsg+0x373/0x450 [] ____sys_sendmsg+0x365/0x3a0 [] ___sys_sendmsg+0x84/0xd0 [] __sys_sendmsg+0x47/0x80 [] do_syscall_64+0x93/0x180 [] entry_SYSCALL_64_after_hwframe+0x76/0x7e

Reference

https://git.kernel.org/stable/c/bea4779a45f49275b1e1b1bd9de03cd3727244d8 https://git.kernel.org/stable/c/fbf7085b3ad1c7cc0677834c90f985f1b4f77a33