ghsa-rmvc-9pcc-7qpx
Vulnerability from github
Published
2022-05-24 17:42
Modified
2024-03-25 03:31
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

An issue was discovered in the Linux kernel 2.6.39 through 5.10.16, as used in Xen. Block, net, and SCSI backends consider certain errors a plain bug, deliberately causing a kernel crash. For errors potentially being at least under the influence of guests (such as out of memory conditions), it isn't correct to assume a plain bug. Memory allocations potentially causing such crashes occur only when Linux is running in PV mode, though. This affects drivers/block/xen-blkback/blkback.c and drivers/xen/xen-scsiback.c.

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{
   affected: [],
   aliases: [
      "CVE-2021-26931",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-770",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2021-02-17T02:15:00Z",
      severity: "MODERATE",
   },
   details: "An issue was discovered in the Linux kernel 2.6.39 through 5.10.16, as used in Xen. Block, net, and SCSI backends consider certain errors a plain bug, deliberately causing a kernel crash. For errors potentially being at least under the influence of guests (such as out of memory conditions), it isn't correct to assume a plain bug. Memory allocations potentially causing such crashes occur only when Linux is running in PV mode, though. This affects drivers/block/xen-blkback/blkback.c and drivers/xen/xen-scsiback.c.",
   id: "GHSA-rmvc-9pcc-7qpx",
   modified: "2024-03-25T03:31:41Z",
   published: "2022-05-24T17:42:34Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2021-26931",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3194a1746e8aabe86075fd3c5e7cf1f4632d7f16",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5a264285ed1cd32e26d9de4f3c8c6855e467fd63",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7c77474b2d22176d2bfb592ec74e0f2cb71352c9",
      },
      {
         type: "WEB",
         url: "https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html",
      },
      {
         type: "WEB",
         url: "https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html",
      },
      {
         type: "WEB",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2XQR52ICKRK3GC4HDWLMWF2U55YGAR63",
      },
      {
         type: "WEB",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GWQWPWYZRXVFJI5M3VCM72X27IB7CKOB",
      },
      {
         type: "WEB",
         url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2XQR52ICKRK3GC4HDWLMWF2U55YGAR63",
      },
      {
         type: "WEB",
         url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GWQWPWYZRXVFJI5M3VCM72X27IB7CKOB",
      },
      {
         type: "WEB",
         url: "https://security.netapp.com/advisory/ntap-20210326-0001",
      },
      {
         type: "WEB",
         url: "http://xenbits.xen.org/xsa/advisory-362.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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