ghsa-m475-c2qh-xg8v
Vulnerability from github
Published
2024-08-07 18:30
Modified
2024-08-08 15:31
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:

wireguard: allowedips: avoid unaligned 64-bit memory accesses

On the parisc platform, the kernel issues kernel warnings because swap_endian() tries to load a 128-bit IPv6 address from an unaligned memory location:

Kernel: unaligned access to 0x55f4688c in wg_allowedips_insert_v6+0x2c/0x80 [wireguard] (iir 0xf3010df) Kernel: unaligned access to 0x55f46884 in wg_allowedips_insert_v6+0x38/0x80 [wireguard] (iir 0xf2010dc)

Avoid such unaligned memory accesses by instead using the get_unaligned_be64() helper macro.

[Jason: replace src[8] in original patch with src+8]

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2024-42247"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-08-07T16:15:47Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwireguard: allowedips: avoid unaligned 64-bit memory accesses\n\nOn the parisc platform, the kernel issues kernel warnings because\nswap_endian() tries to load a 128-bit IPv6 address from an unaligned\nmemory location:\n\n Kernel: unaligned access to 0x55f4688c in wg_allowedips_insert_v6+0x2c/0x80 [wireguard] (iir 0xf3010df)\n Kernel: unaligned access to 0x55f46884 in wg_allowedips_insert_v6+0x38/0x80 [wireguard] (iir 0xf2010dc)\n\nAvoid such unaligned memory accesses by instead using the\nget_unaligned_be64() helper macro.\n\n[Jason: replace src[8] in original patch with src+8]",
  "id": "GHSA-m475-c2qh-xg8v",
  "modified": "2024-08-08T15:31:29Z",
  "published": "2024-08-07T18:30:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42247"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/217978a29c6ceca76d3c640bf94bdf50c268d801"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2fb34bf76431e831f9863cd59adc0bd1f67b0fbf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6638a203abad35fa636d59ac47bdbc4bc100fd74"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/948f991c62a4018fb81d85804eeab3029c6209f8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ae630de24efb123d7199a43256396d7758f4cb75"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b4764f0ad3d68de8a0b847c05f427afb86dd54e6"
    }
  ],
  "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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