ghsa-qx5f-76wj-2xm5
Vulnerability from github
Published
2024-06-20 12:31
Modified
2025-01-07 00:31
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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

bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack()

task_pt_regs() can return NULL on powerpc for kernel threads. This is then used in __bpf_get_stack() to check for user mode, resulting in a kernel oops. Guard against this by checking return value of task_pt_regs() before trying to obtain the call chain.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-48770"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-20T12:15:14Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Guard against accessing NULL pt_regs in bpf_get_task_stack()\n\ntask_pt_regs() can return NULL on powerpc for kernel threads. This is\nthen used in __bpf_get_stack() to check for user mode, resulting in a\nkernel oops. Guard against this by checking return value of\ntask_pt_regs() before trying to obtain the call chain.",
  "id": "GHSA-qx5f-76wj-2xm5",
  "modified": "2025-01-07T00:31:39Z",
  "published": "2024-06-20T12:31:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48770"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0bcd484587b3b3092e448d27dc369e347e1810c3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b82ef4985a6d05e80f604624332430351df7b79a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b992f01e66150fc5e90be4a96f5eb8e634c8249e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ff6bdc205fd0a83bd365405d4e31fb5905826996"
    }
  ],
  "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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