riscv: fgraph: Fix stack layout to match __arch_ftrace_regs argument of ftrace_return_to_handler

{
  "id": "50e037caa26aa9a2dc2552565178d84114de74625fac7ba0b4bfbc31186372b1",
  "url": "https://osv.dev/vulnerability/CVE-2025-22069",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "riscv: fgraph: Fix stack layout to match __arch_ftrace_regs argument of ftrace_return_to_handler",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: riscv: fgraph: Fix stack layout to match __arch_ftrace_regs argument of ftrace_return_to_handler Naresh Kamboju reported a \"Bad frame pointer\" kernel warning while running LTP trace ftrace_stress_test.sh in riscv. We can reproduce the same issue with the following command: ``` $ cd /sys/kernel/debug/tracing $ echo 'f:myprobe do_nanosleep%return args1=$retval' > dynamic_events $ echo 1 > events/fprobes/enable $ echo 1 > tracing_on $ sleep 1 ``` And we can get the following kernel warning: [ 127.692888] ------------[ cut here ]------------ [ 127.693755] Bad frame pointer: expected ff2000000065be50, received ba34c141e9594000 [ 127.693755] from func do_nanosleep return to ffffffff800ccb16 [ 127.698699] WARNING: CPU: 1 PID: 129 at kernel/trace/fgraph.c:755 ftrace_return_to_handler+0x1b2/0x1be [ 127.699894] Modules linked in: [ 127.700908] CPU: 1 UID: 0 PID: 129 Comm: sleep Not tainted 6.14.0-rc3-g0ab191c74642 #32 [ 127.701453] Hardware name: riscv-virtio,qemu (DT) [ 127.701859] epc : ftrace_return_to_handler+0x1b2/0x1be [ 127.702032] ra : ftrace_return_to_handler+0x1b2/0x1be [ 127.702151] epc : ffffffff8013b5e0 ra : ffffffff8013b5e0 sp : ff2000000065bd10 [ 127.702221] gp : ffffffff819c12f8 tp : ff60000080853100 t0 : 6e00000000000000 [ 127.702284] t1 : 0000000000000020 t2 : 6e7566206d6f7266 s0 : ff2000000065bd80 [ 127.702346] s1 : ff60000081262000 a0 : 000000000000007b a1 : ffffffff81894f20 [ 127.702408] a2 : 00000",
    "evidence": "osv:CVE-2025-22069",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.92",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.14.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-22069",
      "aliases": [
        "CVE-2025-22069"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "33d4e904e24d14ff0fbc528b657ddc7c7b636e6a"
                },
                {
                  "fixed": "7ed384db061a264bd806898f7ccab9b98b591488"
                }
              ]
            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a3ed4157b7d89800a0008de0c9e46a438a5c3745"
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                {
                  "fixed": "78b39c587b8f6c69140177108f9c08a75b1c7c37"
                },
                {
                  "fixed": "67a5ba8f742f247bc83e46dd2313c142b1383276"
                }
              ]
            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "6.12.75"
                },
                {
                  "fixed": "6.12.92"
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          ],
          "versions": [
            "v6.12.91",
            "v6.12.90",
            "v6.12.89",
            "v6.12.88",
            "v6.12.87",
            "v6.12.86",
            "v6.12.85",
            "v6.12.84",
            "v6.12.83",
            "v6.12.82",
            "v6.12.81",
            "v6.12.80",
            "v6.12.79",
            "v6.12.78",
            "v6.12.77",
            "v6.12.76",
            "v6.12.75"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-22069.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "6.12.92"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.14.2"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-22069.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:41.758490045Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/67a5ba8f742f247bc83e46dd2313c142b1383276",
        "https://git.kernel.org/stable/c/78b39c587b8f6c69140177108f9c08a75b1c7c37",
        "https://git.kernel.org/stable/c/7ed384db061a264bd806898f7ccab9b98b591488",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/22xxx/CVE-2025-22069.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-22069",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/22xxx/CVE-2025-22069.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-22069",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 509318,
  "published_at": "2025-04-16T14:12:22.357+00:00"
}