ghsa-8x9x-6w2w-w9h8
Vulnerability from github
Published
2022-05-14 03:24
Modified
2022-05-14 03:24
Severity ?
5.5 (Medium) - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

In the flush_tmregs_to_thread function in arch/powerpc/kernel/ptrace.c in the Linux kernel before 4.13.5, a guest kernel crash can be triggered from unprivileged userspace during a core dump on a POWER host due to a missing processor feature check and an erroneous use of transactional memory (TM) instructions in the core dump path, leading to a denial of service.

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{
  "affected": [],
  "aliases": [
    "CVE-2018-1091"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-03-27T21:29:00Z",
    "severity": "MODERATE"
  },
  "details": "In the flush_tmregs_to_thread function in arch/powerpc/kernel/ptrace.c in the Linux kernel before 4.13.5, a guest kernel crash can be triggered from unprivileged userspace during a core dump on a POWER host due to a missing processor feature check and an erroneous use of transactional memory (TM) instructions in the core dump path, leading to a denial of service.",
  "id": "GHSA-8x9x-6w2w-w9h8",
  "modified": "2022-05-14T03:24:59Z",
  "published": "2022-05-14T03:24:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-1091"
    },
    {
      "type": "WEB",
      "url": "https://github.com/torvalds/linux/commit/c1fa0768a8713b135848f78fd43ffc208d8ded70"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2018:1318"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/cve-2018-1091"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1558149"
    },
    {
      "type": "WEB",
      "url": "https://marc.info/?l=linuxppc-embedded\u0026m=150535531910494\u0026w=2"
    },
    {
      "type": "WEB",
      "url": "https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5"
    },
    {
      "type": "WEB",
      "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1fa0768a8713b135848f78fd43ffc208d8ded70"
    },
    {
      "type": "WEB",
      "url": "http://openwall.com/lists/oss-security/2018/03/27/4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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