{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-68797",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-68797"
  ],
  "published": "2026-01-13T15:29:33Z",
  "summary": "char: applicom: fix NULL pointer dereference in ac_ioctl",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nchar: applicom: fix NULL pointer dereference in ac_ioctl\n\nDiscovered by Atuin - Automated Vulnerability Discovery Engine.\n\nIn ac_ioctl, the validation of IndexCard and the check for a valid\nRamIO pointer are skipped when cmd is 6. However, the function\nunconditionally executes readb(apbs[IndexCard].RamIO + VERS) at the\nend.\n\nIf cmd is 6, IndexCard may reference a board that does not exist\n(where RamIO is NULL), leading to a NULL pointer dereference.\n\nFix this by skipping the readb access when cmd is 6, as this\ncommand is a global information query and does not target a specific\nboard context.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.160",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-68797"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5a6240804fb7bbd4f5f6e706955248a6f4c1abbc"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d1b0452280029d05a98c75631131ee61c0b0d084"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0b8b353e09888bccee405e0dd6feafb60360f478"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d285517429a75423789e6408653e57b6fdfc8e54"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/74883565c621eec6cd2e35fe6d27454cf2810c23"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f83e3e9f89181b42f6076a115d767a7552c4a39e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/82d12088c297fa1cef670e1718b3d24f414c23f7"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}