ghsa-cmq9-w454-24mf
Vulnerability from github
Published
2023-01-17 21:30
Modified
2023-01-23 21:30
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

In the Linux kernel before 6.1.6, a NULL pointer dereference bug in the traffic control subsystem allows an unprivileged user to trigger a denial of service (system crash) via a crafted traffic control configuration that is set up with "tc qdisc" and "tc class" commands. This affects qdisc_graft in net/sched/sch_api.c.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-47929"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-01-17T21:15:00Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel before 6.1.6, a NULL pointer dereference bug in the traffic control subsystem allows an unprivileged user to trigger a denial of service (system crash) via a crafted traffic control configuration that is set up with \"tc qdisc\" and \"tc class\" commands. This affects qdisc_graft in net/sched/sch_api.c.",
  "id": "GHSA-cmq9-w454-24mf",
  "modified": "2023-01-23T21:30:26Z",
  "published": "2023-01-17T21:30:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-47929"
    },
    {
      "type": "WEB",
      "url": "https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=96398560f26aa07e8f2969d73c8197e6a6d10407"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html"
    },
    {
      "type": "WEB",
      "url": "https://tldp.org/HOWTO/Traffic-Control-HOWTO/components.html"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2023/dsa-5324"
    },
    {
      "type": "WEB",
      "url": "https://www.spinics.net/lists/netdev/msg555705.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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