Linux/Unix ホストには、ベンダーが提供するパッチが利用できない脆弱性の影響を受ける複数のパッケージがインストールされています。 - Linux カーネルでは、以下の脆弱性が解決されています: vxlan: Fix memory leaks in error path The memory allocated by vxlan_vnigroup_init() is not freed in the error path, leading to memory leaks [1]. Fix by calling vxlan_vnigroup_uninit() in the error path. The leaks can be reproduced by annotating gro_cells_init() with ALLOW_ERROR_INJECTION() and then running: # echo 100 > /sys/kernel/debug/fail_function/probability # echo 1 > /sys/kernel/debug/fail_function/times # echo gro_cells_init > /sys/kernel/debug/fail_function/inject # printf %#x -12 > /sys/kernel/debug/fail_function/gro_cells_init/retval # ip link add name vxlan0 type vxlan dstport 4789 external vnifilter RTNETLINK answers: Cannot allocate memory [1] unreferenced object 0xffff88810db84a00 (size 512): comm ip, pid 330, jiffies 4295010045 (age 66.016s) hex dump (first 32 bytes): f8 d5 76 0e 81 88 ff ff 01 00 00 00 00 00 00 02 ..v............. 03 00 04 00 48 00 00 00 00 00 00 01 04 00 01 00 ....H........... backtrace: [] kmalloc_trace+0x2a/0x60 [] vxlan_vnigroup_init+0x4c/0x160 [] vxlan_init+0x1ae/0x280 [] register_netdevice+0x57a/0x16d0 [] __vxlan_dev_create+0x7c7/0xa50 [] vxlan_newlink+0xd6/0x130 [] __rtnl_newlink+0x112b/0x18a0 [] rtnl_newlink+0x6c/0xa0 [] rtnetlink_rcv_msg+0x43f/0xd40 [] netlink_rcv_skb+0x170/0x440 [] netlink_unicast+0x53f/0x810 [] netlink_sendmsg+0x958/0xe70 [] ____sys_sendmsg+0x78f/0xa90 [] ___sys_sendmsg+0x13a/0x1e0 [] __sys_sendmsg+0x11c/0x1f0 [] do_syscall_64+0x38/0x80 unreferenced object 0xffff88810e76d5f8 (size 192): comm ip, pid 330, jiffies 4295010045 (age 66.016s) hex dump (first 32 bytes): 04 00 00 00 00 00 00 00 db e1 4f e7 00 00 00 00 ..........O..... 08 d6 76 0e 81 88 ff ff 08 d6 76 0e 81 88 ff ff ..v.......v..... backtrace: [] __kmalloc_node+0x4e/0x90 [] kvmalloc_node+0xa6/0x1f0 [] bucket_table_alloc.isra.0+0x83/0x460 [] rhashtable_init+0x43b/0x7c0 [] vxlan_vnigroup_init+0x6c/0x160 [] vxlan_init+0x1ae/0x280 [] register_netdevice+0x57a/0x16d0 [] __vxlan_dev_create+0x7c7/0xa50 [] vxlan_newlink+0xd6/0x130 [] __rtnl_newlink+0x112b/0x18a0 [] rtnl_newlink+0x6c/0xa0 [] rtnetlink_rcv_msg+0x43f/0xd40 [] netlink_rcv_skb+0x170/0x440 [] netlink_unicast+0x53f/0x810 [] netlink_sendmsg+0x958/0xe70 [] ____sys_sendmsg+0x78f/0xa90 (CVE-2023-53190) Nessus は、ベンダーによって報告されたパッケージの存在に依存していることに注意してください。

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