ghsa-7prp-hfw8-9qcp
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
mptcp: deal with large GSO size
After the blamed commit below, the TCP sockets (and the MPTCP subflows) can build egress packets larger than 64K. That exceeds the maximum DSS data size, the length being misrepresent on the wire and the stream being corrupted, as later observed on the receiver:
WARNING: CPU: 0 PID: 9696 at net/mptcp/protocol.c:705 __mptcp_move_skbs_from_subflow+0x2604/0x26e0
CPU: 0 PID: 9696 Comm: syz-executor.7 Not tainted 6.6.0-rc5-gcd8bdf563d46 #45
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-2.el7 04/01/2014
netlink: 8 bytes leftover after parsing attributes in process syz-executor.4'.
RIP: 0010:__mptcp_move_skbs_from_subflow+0x2604/0x26e0 net/mptcp/protocol.c:705
RSP: 0018:ffffc90000006e80 EFLAGS: 00010246
RAX: ffffffff83e9f674 RBX: ffff88802f45d870 RCX: ffff888102ad0000
netlink: 8 bytes leftover after parsing attributes in processsyz-executor.4'.
RDX: 0000000080000303 RSI: 0000000000013908 RDI: 0000000000003908
RBP: ffffc90000007110 R08: ffffffff83e9e078 R09: 1ffff1100e548c8a
R10: dffffc0000000000 R11: ffffed100e548c8b R12: 0000000000013908
R13: dffffc0000000000 R14: 0000000000003908 R15: 000000000031cf29
FS: 00007f239c47e700(0000) GS:ffff88811b200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f239c45cd78 CR3: 000000006a66c006 CR4: 0000000000770ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
PKRU: 55555554
Call Trace:
Address the issue explicitly bounding the maximum GSO size to what MPTCP actually allows.
{
"affected": [],
"aliases": [
"CVE-2023-52778"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-21T16:15:16Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: deal with large GSO size\n\nAfter the blamed commit below, the TCP sockets (and the MPTCP subflows)\ncan build egress packets larger than 64K. That exceeds the maximum DSS\ndata size, the length being misrepresent on the wire and the stream being\ncorrupted, as later observed on the receiver:\n\n WARNING: CPU: 0 PID: 9696 at net/mptcp/protocol.c:705 __mptcp_move_skbs_from_subflow+0x2604/0x26e0\n CPU: 0 PID: 9696 Comm: syz-executor.7 Not tainted 6.6.0-rc5-gcd8bdf563d46 #45\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-2.el7 04/01/2014\n netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4\u0027.\n RIP: 0010:__mptcp_move_skbs_from_subflow+0x2604/0x26e0 net/mptcp/protocol.c:705\n RSP: 0018:ffffc90000006e80 EFLAGS: 00010246\n RAX: ffffffff83e9f674 RBX: ffff88802f45d870 RCX: ffff888102ad0000\n netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4\u0027.\n RDX: 0000000080000303 RSI: 0000000000013908 RDI: 0000000000003908\n RBP: ffffc90000007110 R08: ffffffff83e9e078 R09: 1ffff1100e548c8a\n R10: dffffc0000000000 R11: ffffed100e548c8b R12: 0000000000013908\n R13: dffffc0000000000 R14: 0000000000003908 R15: 000000000031cf29\n FS: 00007f239c47e700(0000) GS:ffff88811b200000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00007f239c45cd78 CR3: 000000006a66c006 CR4: 0000000000770ef0\n DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600\n PKRU: 55555554\n Call Trace:\n \u003cIRQ\u003e\n mptcp_data_ready+0x263/0xac0 net/mptcp/protocol.c:819\n subflow_data_ready+0x268/0x6d0 net/mptcp/subflow.c:1409\n tcp_data_queue+0x21a1/0x7a60 net/ipv4/tcp_input.c:5151\n tcp_rcv_established+0x950/0x1d90 net/ipv4/tcp_input.c:6098\n tcp_v6_do_rcv+0x554/0x12f0 net/ipv6/tcp_ipv6.c:1483\n tcp_v6_rcv+0x2e26/0x3810 net/ipv6/tcp_ipv6.c:1749\n ip6_protocol_deliver_rcu+0xd6b/0x1ae0 net/ipv6/ip6_input.c:438\n ip6_input+0x1c5/0x470 net/ipv6/ip6_input.c:483\n ipv6_rcv+0xef/0x2c0 include/linux/netfilter.h:304\n __netif_receive_skb+0x1ea/0x6a0 net/core/dev.c:5532\n process_backlog+0x353/0x660 net/core/dev.c:5974\n __napi_poll+0xc6/0x5a0 net/core/dev.c:6536\n net_rx_action+0x6a0/0xfd0 net/core/dev.c:6603\n __do_softirq+0x184/0x524 kernel/softirq.c:553\n do_softirq+0xdd/0x130 kernel/softirq.c:454\n\nAddress the issue explicitly bounding the maximum GSO size to what MPTCP\nactually allows.",
"id": "GHSA-7prp-hfw8-9qcp",
"modified": "2024-05-21T18:31:20Z",
"published": "2024-05-21T18:31:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52778"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/342b528c0e849bed9def76dadaa470d3af678e94"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/57ced2eb77343a91d28f4a73675b05fe7b555def"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/70ff9b65a72885b3a2dfde6709da1f19b85fa696"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9fce92f050f448a0d1ddd9083ef967d9930f1e52"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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