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CVE-2025-39974

Estado: AplazadaSin puntuar—

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

tracing/osnoise: Fix slab-out-of-bounds in _parse_integer_limit()

When config osnoise cpus by write() syscall, the following KASAN splat may be observed:

This issue can be reproduced by below code:

Function bitmap_parselist() was called to parse cpulist, it require that the parameter 'buf' must be terminated with a '\0' or '\n'. Fix this issue by adding a '\0' to 'buf' in osnoise_cpus_write().

Detalles técnicos trazas, registros y código del informe original
BUG: KASAN: slab-out-of-bounds in _parse_integer_limit+0x103/0x130
Read of size 1 at addr ffff88810121e3a1 by task test/447
CPU: 1 UID: 0 PID: 447 Comm: test Not tainted 6.17.0-rc6-dirty #288 PREEMPT(voluntary)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x55/0x70
 print_report+0xcb/0x610
 kasan_report+0xb8/0xf0
 _parse_integer_limit+0x103/0x130
 bitmap_parselist+0x16d/0x6f0
 osnoise_cpus_write+0x116/0x2d0
 vfs_write+0x21e/0xcc0
 ksys_write+0xee/0x1c0
 do_syscall_64+0xa8/0x2a0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
 </TASK>

const char *cpulist = "1";
int fd=open("/sys/kernel/debug/tracing/osnoise/cpus", O_WRONLY);
write(fd, cpulist, strlen(cpulist));

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2025-39974",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "17f89102fe23d7389085a8820550df688f79888a",
              "lessThan": "930cb05a9e107777316b3ccf37f9556366669065",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "17f89102fe23d7389085a8820550df688f79888a",
              "lessThan": "a2501032de0d1bc7971b2e43c03da534ac10ee9b",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "kernel/trace/trace_osnoise.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.16",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.16.10",
              "versionType": "semver",
              "lessThanOrEqual": "6.16.*"
            },
            {
              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "kernel/trace/trace_osnoise.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-10-15T08:15:35.153",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/930cb05a9e107777316b3ccf37f9556366669065",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a2501032de0d1bc7971b2e43c03da534ac10ee9b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/osnoise: Fix slab-out-of-bounds in _parse_integer_limit()\n\nWhen config osnoise cpus by write() syscall, the following KASAN splat may\nbe observed:\n\nBUG: KASAN: slab-out-of-bounds in _parse_integer_limit+0x103/0x130\nRead of size 1 at addr ffff88810121e3a1 by task test/447\nCPU: 1 UID: 0 PID: 447 Comm: test Not tainted 6.17.0-rc6-dirty #288 PREEMPT(voluntary)\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nCall Trace:\n <TASK>\n dump_stack_lvl+0x55/0x70\n print_report+0xcb/0x610\n kasan_report+0xb8/0xf0\n _parse_integer_limit+0x103/0x130\n bitmap_parselist+0x16d/0x6f0\n osnoise_cpus_write+0x116/0x2d0\n vfs_write+0x21e/0xcc0\n ksys_write+0xee/0x1c0\n do_syscall_64+0xa8/0x2a0\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n </TASK>\n\nThis issue can be reproduced by below code:\n\nconst char *cpulist = \"1\";\nint fd=open(\"/sys/kernel/debug/tracing/osnoise/cpus\", O_WRONLY);\nwrite(fd, cpulist, strlen(cpulist));\n\nFunction bitmap_parselist() was called to parse cpulist, it require that\nthe parameter 'buf' must be terminated with a '\\0' or '\\n'. Fix this issue\nby adding a '\\0' to 'buf' in osnoise_cpus_write()."
    }
  ],
  "lastModified": "2026-06-17T09:18:56.430",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}