{"id":"DEBIAN-CVE-2024-46783","details":"In the Linux kernel, the following vulnerability has been resolved:  tcp_bpf: fix return value of tcp_bpf_sendmsg()  When we cork messages in psock-\u003ecork, the last message triggers the flushing will result in sending a sk_msg larger than the current message size. In this case, in tcp_bpf_send_verdict(), 'copied' becomes negative at least in the following case:  468         case __SK_DROP: 469         default: 470                 sk_msg_free_partial(sk, msg, tosend); 471                 sk_msg_apply_bytes(psock, tosend); 472                 *copied -= (tosend + delta); // \u003c==== HERE 473                 return -EACCES;  Therefore, it could lead to the following BUG with a proper value of 'copied' (thanks to syzbot). We should not use negative 'copied' as a return value here.    ------------[ cut here ]------------   kernel BUG at net/socket.c:733!   Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP   Modules linked in:   CPU: 0 UID: 0 PID: 3265 Comm: syz-executor510 Not tainted 6.11.0-rc3-syzkaller-00060-gd07b43284ab3 #0   Hardware name: linux,dummy-virt (DT)   pstate: 61400009 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)   pc : sock_sendmsg_nosec net/socket.c:733 [inline]   pc : sock_sendmsg_nosec net/socket.c:728 [inline]   pc : __sock_sendmsg+0x5c/0x60 net/socket.c:745   lr : sock_sendmsg_nosec net/socket.c:730 [inline]   lr : __sock_sendmsg+0x54/0x60 net/socket.c:745   sp : ffff800088ea3b30   x29: ffff800088ea3b30 x28: fbf00000062bc900 x27: 0000000000000000   x26: ffff800088ea3bc0 x25: ffff800088ea3bc0 x24: 0000000000000000   x23: f9f00000048dc000 x22: 0000000000000000 x21: ffff800088ea3d90   x20: f9f00000048dc000 x19: ffff800088ea3d90 x18: 0000000000000001   x17: 0000000000000000 x16: 0000000000000000 x15: 000000002002ffaf   x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000   x11: 0000000000000000 x10: ffff8000815849c0 x9 : ffff8000815b49c0   x8 : 0000000000000000 x7 : 000000000000003f x6 : 0000000000000000   x5 : 00000000000007e0 x4 : fff07ffffd239000 x3 : fbf00000062bc900   x2 : 0000000000000000 x1 : 0000000000000000 x0 : 00000000fffffdef   Call trace:    sock_sendmsg_nosec net/socket.c:733 [inline]    __sock_sendmsg+0x5c/0x60 net/socket.c:745    ____sys_sendmsg+0x274/0x2ac net/socket.c:2597    ___sys_sendmsg+0xac/0x100 net/socket.c:2651    __sys_sendmsg+0x84/0xe0 net/socket.c:2680    __do_sys_sendmsg net/socket.c:2689 [inline]    __se_sys_sendmsg net/socket.c:2687 [inline]    __arm64_sys_sendmsg+0x24/0x30 net/socket.c:2687    __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]    invoke_syscall+0x48/0x110 arch/arm64/kernel/syscall.c:49    el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:132    do_el0_svc+0x1c/0x28 arch/arm64/kernel/syscall.c:151    el0_svc+0x34/0xec arch/arm64/kernel/entry-common.c:712    el0t_64_sync_handler+0x100/0x12c arch/arm64/kernel/entry-common.c:730    el0t_64_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:598   Code: f9404463 d63f0060 3108441f 54fffe81 (d4210000)   ---[ end trace 0000000000000000 ]---","modified":"2026-09-15T09:03:11.808674459Z","published":"2024-09-18T08:15:05.630Z","upstream":["CVE-2024-46783"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2024-46783"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.112-1"}]}],"versions":["6.1.106-1","6.1.106-2","6.1.106-3","6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1","6.1.64-1","6.1.66-1","6.1.67-1","6.1.69-1","6.1.69-1~bpo11+1","6.1.76-1","6.1.76-1~bpo11+1","6.1.82-1","6.1.85-1","6.1.90-1","6.1.90-1~bpo11+1","6.1.94-1","6.1.94-1~bpo11+1","6.1.98-1","6.1.99-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-46783.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.10.11-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-46783.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.10.11-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-46783.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}