ghsa-hp2j-q576-5vvw
Vulnerability from github
Published
2024-07-30 09:31
Modified
2024-07-30 09:31
Details

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

s390/dasd: Fix invalid dereferencing of indirect CCW data pointer

Fix invalid dereferencing of indirect CCW data pointer in dasd_eckd_dump_sense() that leads to a kernel panic in error cases.

When using indirect addressing for DASD CCWs (IDAW) the CCW CDA pointer does not contain the data address itself but a pointer to the IDAL. This needs to be translated from physical to virtual as well before using it.

This dereferencing is also used for dasd_page_cache and also fixed although it is very unlikely that this code path ever gets used.

Show details on source website


{
   affected: [],
   aliases: [
      "CVE-2024-42099",
   ],
   database_specific: {
      cwe_ids: [],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2024-07-30T08:15:02Z",
      severity: null,
   },
   details: "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/dasd: Fix invalid dereferencing of indirect CCW data pointer\n\nFix invalid dereferencing of indirect CCW data pointer in\ndasd_eckd_dump_sense() that leads to a kernel panic in error cases.\n\nWhen using indirect addressing for DASD CCWs (IDAW) the CCW CDA pointer\ndoes not contain the data address itself but a pointer to the IDAL.\nThis needs to be translated from physical to virtual as well before\nusing it.\n\nThis dereferencing is also used for dasd_page_cache and also fixed\nalthough it is very unlikely that this code path ever gets used.",
   id: "GHSA-hp2j-q576-5vvw",
   modified: "2024-07-30T09:31:51Z",
   published: "2024-07-30T09:31:51Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2024-42099",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/b3a58f3b90f564f42a5c35778d8c5107b2c2150b",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/c116475f7d6410b1e6d399207ac75de6cf9c3652",
      },
   ],
   schema_version: "1.4.0",
   severity: [],
}


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