{"cve":"CVE-2024-53123","nvd":{"published":"2024-12-02T14:15:13.120","modified":"2026-06-17T08:08:21.467","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: error out earlier on disconnect\n\nEric reported a division by zero splat in the MPTCP protocol:\n\nOops: divide error: 0000 [#1] PREEMPT SMP KASAN PTI\nCPU: 1 UID: 0 PID: 6094 Comm: syz-executor317 Not tainted\n6.12.0-rc5-syzkaller-00291-g05b92660cdfe #0\nHardware name: Google Google Compute Engine/Google Compute Engine,\nBIOS Google 09/13/2024\nRIP: 0010:__tcp_select_window+0x5b4/0x1310 net/ipv4/tcp_output.c:3163\nCode: f6 44 01 e3 89 df e8 9b 75 09 f8 44 39 f3 0f 8d 11 ff ff ff e8\n0d 74 09 f8 45 89 f4 e9 04 ff ff ff e8 00 74 09 f8 44 89 f0 99 <f7> 7c\n24 14 41 29 d6 45 89 f4 e9 ec fe ff ff e8 e8 73 09 f8 48 89\nRSP: 0018:ffffc900041f7930 EFLAGS: 00010293\nRAX: 0000000000017e67 RBX: 0000000000017e67 RCX: ffffffff8983314b\nRDX: 0000000000000000 RSI: ffffffff898331b0 RDI: 0000000000000004\nRBP: 00000000005d6000 R08: 0000000000000004 R09: 0000000000017e67\nR10: 0000000000003e80 R11: 0000000000000000 R12: 0000000000003e80\nR13: ffff888031d9b440 R14: 0000000000017e67 R15: 00000000002eb000\nFS: 00007feb5d7f16c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007feb5d8adbb8 CR3: 0000000074e4c000 CR4: 00000000003526f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n<TASK>\n__tcp_cleanup_rbuf+0x3e7/0x4b0 net/ipv4/tcp.c:1493\nmptcp_rcv_space_adjust net/mptcp/protocol.c:2085 [inline]\nmptcp_recvmsg+0x2156/0x2600 net/mptcp/protocol.c:2289\ninet_recvmsg+0x469/0x6a0 net/ipv4/af_inet.c:885\nsock_recvmsg_nosec net/socket.c:1051 [inline]\nsock_recvmsg+0x1b2/0x250 net/socket.c:1073\n__sys_recvfrom+0x1a5/0x2e0 net/socket.c:2265\n__do_sys_recvfrom net/socket.c:2283 [inline]\n__se_sys_recvfrom net/socket.c:2279 [inline]\n__x64_sys_recvfrom+0xe0/0x1c0 net/socket.c:2279\ndo_syscall_x64 arch/x86/entry/common.c:52 [inline]\ndo_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83\nentry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7feb5d857559\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 00 00 90 48 89 f8 48\n89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d\n01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007feb5d7f1208 EFLAGS: 00000246 ORIG_RAX: 000000000000002d\nRAX: ffffffffffffffda RBX: 00007feb5d8e1318 RCX: 00007feb5d857559\nRDX: 000000800000000e RSI: 0000000000000000 RDI: 0000000000000003\nRBP: 00007feb5d8e1310 R08: 0000000000000000 R09: ffffffff81000000\nR10: 0000000000000100 R11: 0000000000000246 R12: 00007feb5d8e131c\nR13: 00007feb5d8ae074 R14: 000000800000000e R15: 00000000fffffdef\n\nand provided a nice reproducer.\n\nThe root cause is the current bad handling of racing disconnect.\nAfter the blamed commit below, sk_wait_data() can return (with\nerror) with the underlying socket disconnected and a zero rcv_mss.\n\nCatch the error and return without performing any additional\noperations on the current socket.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-362"],"references":["https://git.kernel.org/stable/c/581302298524e9d77c4c44ff5156a6cd112227ae","https://git.kernel.org/stable/c/955388e1d5d222c4101c596b536d41b91a8b212e","https://git.kernel.org/stable/c/a66805c9b22caf4e42af7a616f6c6b83c90d1010","https://git.kernel.org/stable/c/a749b23059b43a9b1787eb36c5d9d44150a34238","https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:57:34.731061660+00:00"},"epss":{"cve":"CVE-2024-53123","score":0.00178,"percentile":0.07381,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}