{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "afc76b8b80112189b6f11e67e19cf58301944814"
            },
            {
              "fixed": "84cfcf240f4a577733b1d98fcd2611a611612b03"
            },
            {
              "fixed": "20a7510e781084364691b4962de31de758194cc9"
            },
            {
              "fixed": "8547649981e6631328cd64f583667501ae385531"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.12.0"
            },
            {
              "fixed": "6.1.23"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.2.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53694.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: ftrace: Fixup panic by disabling preemption\n\nIn RISCV, we must use an AUIPC + JALR pair to encode an immediate,\nforming a jump that jumps to an address over 4K. This may cause errors\nif we want to enable kernel preemption and remove dependency from\npatching code with stop_machine(). For example, if a task was switched\nout on auipc. And, if we changed the ftrace function before it was\nswitched back, then it would jump to an address that has updated 11:0\nbits mixing with previous XLEN:12 part.\n\np: patched area performed by dynamic ftrace\nftrace_prologue:\np|      REG_S   ra, -SZREG(sp)\np|      auipc   ra, 0x? ------------\u003e preempted\n\t\t\t\t\t...\n\t\t\t\tchange ftrace function\n\t\t\t\t\t...\np|      jalr    -?(ra) \u003c------------- switched back\np|      REG_L   ra, -SZREG(sp)\nfunc:\n\txxx\n\tret",
  "id": "CVE-2023-53694",
  "modified": "2026-04-01T23:09:50.019169177Z",
  "published": "2025-10-22T13:23:35.869Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/20a7510e781084364691b4962de31de758194cc9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/84cfcf240f4a577733b1d98fcd2611a611612b03"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8547649981e6631328cd64f583667501ae385531"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53694.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53694"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.3",
  "summary": "riscv: ftrace: Fixup panic by disabling preemption"
}