Vulnerability-Lookup

GHSA-PW5G-24RM-MRGW

Vulnerability from github – Published: 2024-05-19 09:34 – Updated: 2025-03-21 18:31

Details

In the Linux kernel, the following vulnerability has been resolved:

mptcp: prevent BPF accessing lowat from a subflow socket.

Alexei reported the following splat:

WARNING: CPU: 32 PID: 3276 at net/mptcp/subflow.c:1430 subflow_data_ready+0x147/0x1c0 Modules linked in: dummy bpf_testmod(O) [last unloaded: bpf_test_no_cfi(O)] CPU: 32 PID: 3276 Comm: test_progs Tainted: GO 6.8.0-12873-g2c43c33bfd23 Call Trace: mptcp_set_rcvlowat+0x79/0x1d0 sk_setsockopt+0x6c0/0x1540 __bpf_setsockopt+0x6f/0x90 bpf_sock_ops_setsockopt+0x3c/0x90 bpf_prog_509ce5db2c7f9981_bpf_test_sockopt_int+0xb4/0x11b bpf_prog_dce07e362d941d2b_bpf_test_socket_sockopt+0x12b/0x132 bpf_prog_348c9b5faaf10092_skops_sockopt+0x954/0xe86 __cgroup_bpf_run_filter_sock_ops+0xbc/0x250 tcp_connect+0x879/0x1160 tcp_v6_connect+0x50c/0x870 mptcp_connect+0x129/0x280 __inet_stream_connect+0xce/0x370 inet_stream_connect+0x36/0x50 bpf_trampoline_6442491565+0x49/0xef inet_stream_connect+0x5/0x50 __sys_connect+0x63/0x90 __x64_sys_connect+0x14/0x20

The root cause of the issue is that bpf allows accessing mptcp-level proto_ops from a tcp subflow scope.

Fix the issue detecting the problematic call and preventing any action.

Severity ?

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2024-35894"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-19T09:15:10Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: prevent BPF accessing lowat from a subflow socket.\n\nAlexei reported the following splat:\n\n WARNING: CPU: 32 PID: 3276 at net/mptcp/subflow.c:1430 subflow_data_ready+0x147/0x1c0\n Modules linked in: dummy bpf_testmod(O) [last unloaded: bpf_test_no_cfi(O)]\n CPU: 32 PID: 3276 Comm: test_progs Tainted: GO       6.8.0-12873-g2c43c33bfd23\n Call Trace:\n  \u003cTASK\u003e\n  mptcp_set_rcvlowat+0x79/0x1d0\n  sk_setsockopt+0x6c0/0x1540\n  __bpf_setsockopt+0x6f/0x90\n  bpf_sock_ops_setsockopt+0x3c/0x90\n  bpf_prog_509ce5db2c7f9981_bpf_test_sockopt_int+0xb4/0x11b\n  bpf_prog_dce07e362d941d2b_bpf_test_socket_sockopt+0x12b/0x132\n  bpf_prog_348c9b5faaf10092_skops_sockopt+0x954/0xe86\n  __cgroup_bpf_run_filter_sock_ops+0xbc/0x250\n  tcp_connect+0x879/0x1160\n  tcp_v6_connect+0x50c/0x870\n  mptcp_connect+0x129/0x280\n  __inet_stream_connect+0xce/0x370\n  inet_stream_connect+0x36/0x50\n  bpf_trampoline_6442491565+0x49/0xef\n  inet_stream_connect+0x5/0x50\n  __sys_connect+0x63/0x90\n  __x64_sys_connect+0x14/0x20\n\nThe root cause of the issue is that bpf allows accessing mptcp-level\nproto_ops from a tcp subflow scope.\n\nFix the issue detecting the problematic call and preventing any action.",
  "id": "GHSA-pw5g-24rm-mrgw",
  "modified": "2025-03-21T18:31:29Z",
  "published": "2024-05-19T09:34:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-35894"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3ffb1ab698376f09cc33101c07c1be229389fe29"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ee3c845787b621cfe82c2e52c513024a9d7a78f5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fcf4692fa39e86a590c14a4af2de704e1d20a3b5"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20250321-0002"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-35894 (GCVE-0-2024-35894)

Vulnerability from cvelistv5 – Published: 2024-05-19 08:34 – Updated: 2025-05-04 09:07

Title

mptcp: prevent BPF accessing lowat from a subflow socket.

Summary

In the Linux kernel, the following vulnerability has been resolved: mptcp: prevent BPF accessing lowat from a subflow socket. Alexei reported the following splat: WARNING: CPU: 32 PID: 3276 at net/mptcp/subflow.c:1430 subflow_data_ready+0x147/0x1c0 Modules linked in: dummy bpf_testmod(O) [last unloaded: bpf_test_no_cfi(O)] CPU: 32 PID: 3276 Comm: test_progs Tainted: GO 6.8.0-12873-g2c43c33bfd23 Call Trace: <TASK> mptcp_set_rcvlowat+0x79/0x1d0 sk_setsockopt+0x6c0/0x1540 __bpf_setsockopt+0x6f/0x90 bpf_sock_ops_setsockopt+0x3c/0x90 bpf_prog_509ce5db2c7f9981_bpf_test_sockopt_int+0xb4/0x11b bpf_prog_dce07e362d941d2b_bpf_test_socket_sockopt+0x12b/0x132 bpf_prog_348c9b5faaf10092_skops_sockopt+0x954/0xe86 __cgroup_bpf_run_filter_sock_ops+0xbc/0x250 tcp_connect+0x879/0x1160 tcp_v6_connect+0x50c/0x870 mptcp_connect+0x129/0x280 __inet_stream_connect+0xce/0x370 inet_stream_connect+0x36/0x50 bpf_trampoline_6442491565+0x49/0xef inet_stream_connect+0x5/0x50 __sys_connect+0x63/0x90 __x64_sys_connect+0x14/0x20 The root cause of the issue is that bpf allows accessing mptcp-level proto_ops from a tcp subflow scope. Fix the issue detecting the problematic call and preventing any action.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/ee3c845787b621cfe…
	https://git.kernel.org/stable/c/3ffb1ab698376f09c…
	https://git.kernel.org/stable/c/fcf4692fa39e86a59…

Impacted products

Vendor

Product

Version

Linux

Affected: 124a4885b55f3039c697feb53edc5ad88bf21161 , < ee3c845787b621cfe82c2e52c513024a9d7a78f5 (git)
Affected: 5684ab1a0effbfeb706f47d85785f653005b97b1 , < 3ffb1ab698376f09cc33101c07c1be229389fe29 (git)
Affected: 5684ab1a0effbfeb706f47d85785f653005b97b1 , < fcf4692fa39e86a590c14a4af2de704e1d20a3b5 (git)

Linux

Affected: 6.7
Unaffected: 0 , < 6.7 (semver)
Unaffected: 6.8.5 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-PW5G-24RM-MRGW

CVE-2024-35894 (GCVE-0-2024-35894)

Tags

Sightings

Nomenclature