DEBIAN-CVE-2024-56636

In the Linux kernel, the following vulnerability has been resolved: geneve: do not assume mac header is set in genevexmitskb() We should not assume mac header is set in output path. Use skbethhdr() instead of ethhdr() to fix the issue. sysbot reported the following : WARNING: CPU: 0 PID: 11635 at include/linux/skbuff.h:3052 skbmacheader include/linux/skbuff.h:3052 [inline] WARNING: CPU: 0 PID: 11635 at include/linux/skbuff.h:3052 ethhdr include/linux/ifether.h:24 [inline] WARNING: CPU: 0 PID: 11635 at include/linux/skbuff.h:3052 genevexmitskb drivers/net/geneve.c:898 [inline] WARNING: CPU: 0 PID: 11635 at include/linux/skbuff.h:3052 genevexmit+0x4c38/0x5730 drivers/net/geneve.c:1039 Modules linked in: CPU: 0 UID: 0 PID: 11635 Comm: syz.4.1423 Not tainted 6.12.0-syzkaller-10296-gaaf20f870da0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:skbmacheader include/linux/skbuff.h:3052 [inline] RIP: 0010:ethhdr include/linux/ifether.h:24 [inline] RIP: 0010:genevexmitskb drivers/net/geneve.c:898 [inline] RIP: 0010:genevexmit+0x4c38/0x5730 drivers/net/geneve.c:1039 Code: 21 c6 02 e9 35 d4 ff ff e8 a5 48 4c fb 90 0f 0b 90 e9 fd f5 ff ff e8 97 48 4c fb 90 0f 0b 90 e9 d8 f5 ff ff e8 89 48 4c fb 90 <0f> 0b 90 e9 41 e4 ff ff e8 7b 48 4c fb 90 0f 0b 90 e9 cd e7 ff ff RSP: 0018:ffffc90003b2f870 EFLAGS: 00010283 RAX: 000000000000037a RBX: 000000000000ffff RCX: ffffc9000dc3d000 RDX: 0000000000080000 RSI: ffffffff86428417 RDI: 0000000000000003 RBP: ffffc90003b2f9f0 R08: 0000000000000003 R09: 000000000000ffff R10: 000000000000ffff R11: 0000000000000002 R12: ffff88806603c000 R13: 0000000000000000 R14: ffff8880685b2780 R15: 0000000000000e23 FS: 00007fdc2deed6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30a1dff8 CR3: 0000000056b8c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> _netdevstartxmit include/linux/netdevice.h:5002 [inline] netdevstartxmit include/linux/netdevice.h:5011 [inline] _devdirectxmit+0x58a/0x720 net/core/dev.c:4490 devdirectxmit include/linux/netdevice.h:3181 [inline] packetxmit+0x1e4/0x360 net/packet/afpacket.c:285 packetsnd net/packet/afpacket.c:3146 [inline] packetsendmsg+0x2700/0x5660 net/packet/afpacket.c:3178 socksendmsgnosec net/socket.c:711 [inline] _socksendmsg net/socket.c:726 [inline] _syssendto+0x488/0x4f0 net/socket.c:2197 _dosyssendto net/socket.c:2204 [inline] _sesyssendto net/socket.c:2200 [inline] _x64syssendto+0xe0/0x1c0 net/socket.c:2200 dosyscallx64 arch/x86/entry/common.c:52 [inline] dosyscall64+0xcd/0x250 arch/x86/entry/common.c:83 entrySYSCALL64afterhwframe+0x77/0x7f