GHSA-265F-V3VF-6M77

Vulnerability from github – Published: 2024-05-01 06:31 – Updated: 2024-11-07 18:31
VLAI?
Details

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

wireguard: netlink: access device through ctx instead of peer

The previous commit fixed a bug that led to a NULL peer->device being dereferenced. It's actually easier and faster performance-wise to instead get the device from ctx->wg. This semantically makes more sense too, since ctx->wg->peer_allowedips.seq is compared with ctx->allowedips_seq, basing them both in ctx. This also acts as a defence in depth provision against freed peers.

Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2024-26950"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-01T06:15:11Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwireguard: netlink: access device through ctx instead of peer\n\nThe previous commit fixed a bug that led to a NULL peer-\u003edevice being\ndereferenced. It\u0027s actually easier and faster performance-wise to\ninstead get the device from ctx-\u003ewg. This semantically makes more sense\ntoo, since ctx-\u003ewg-\u003epeer_allowedips.seq is compared with\nctx-\u003eallowedips_seq, basing them both in ctx. This also acts as a\ndefence in depth provision against freed peers.",
  "id": "GHSA-265f-v3vf-6m77",
  "modified": "2024-11-07T18:31:20Z",
  "published": "2024-05-01T06:31:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26950"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/09c3fa70f65175861ca948cb2f0f791e666c90e5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/493aa6bdcffd90a4f82aa614fe4f4db0641b4068"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4be453271a882c8ebc28df3dbf9e4d95e6ac42f5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/71cbd32e3db82ea4a74e3ef9aeeaa6971969c86f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/93bcc1752c69bb309f4d8cfaf960ef1faeb34996"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c991567e6c638079304cc15dff28748e4a3c4a37"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d44bd323d8bb8031eef4bdc44547925998a11e47"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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