FKIE_CVE-2025-38233

Vulnerability from fkie_nvd - Published: 2025-07-04 14:15 - Updated: 2026-07-30 06:23
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: powerpc64/ftrace: fix clobbered r15 during livepatching While r15 is clobbered always with PPC_FTRACE_OUT_OF_LINE, it is not restored in livepatch sequence leading to not so obvious fails like below: BUG: Unable to handle kernel data access on write at 0xc0000000000f9078 Faulting instruction address: 0xc0000000018ff958 Oops: Kernel access of bad area, sig: 11 [#1] ... NIP: c0000000018ff958 LR: c0000000018ff930 CTR: c0000000009c0790 REGS: c00000005f2e7790 TRAP: 0300 Tainted: G K (6.14.0+) MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 2822880b XER: 20040000 CFAR: c0000000008addc0 DAR: c0000000000f9078 DSISR: 0a000000 IRQMASK: 1 GPR00: c0000000018f2584 c00000005f2e7a30 c00000000280a900 c000000017ffa488 GPR04: 0000000000000008 0000000000000000 c0000000018f24fc 000000000000000d GPR08: fffffffffffe0000 000000000000000d 0000000000000000 0000000000008000 GPR12: c0000000009c0790 c000000017ffa480 c00000005f2e7c78 c0000000000f9070 GPR16: c00000005f2e7c90 0000000000000000 0000000000000000 0000000000000000 GPR20: 0000000000000000 c00000005f3efa80 c00000005f2e7c60 c00000005f2e7c88 GPR24: c00000005f2e7c60 0000000000000001 c0000000000f9078 0000000000000000 GPR28: 00007fff97960000 c000000017ffa480 0000000000000000 c0000000000f9078 ... Call Trace: check_heap_object+0x34/0x390 (unreliable) __mutex_unlock_slowpath.isra.0+0xe4/0x230 seq_read_iter+0x430/0xa90 proc_reg_read_iter+0xa4/0x200 vfs_read+0x41c/0x510 ksys_read+0xa4/0x190 system_call_exception+0x1d0/0x440 system_call_vectored_common+0x15c/0x2ec Fix it by restoring r15 always.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a9212bf5ca640232254b31330e86272fe4073bc9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cb5b691f8273432297611863ac142e17119279e0Patch
Impacted products
Vendor Product Version
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/powerpc/kernel/trace/ftrace_entry.S"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a9212bf5ca640232254b31330e86272fe4073bc9",
              "status": "affected",
              "version": "eec37961a56aa4f3fe1c33ffd48eec7d1bb0c009",
              "versionType": "git"
            },
            {
              "lessThan": "cb5b691f8273432297611863ac142e17119279e0",
              "status": "affected",
              "version": "eec37961a56aa4f3fe1c33ffd48eec7d1bb0c009",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/powerpc/kernel/trace/ftrace_entry.S"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "DFD174C5-1AA2-4671-BDDC-1A9FCC753655",
              "versionEndExcluding": "6.15.4",
              "versionStartIncluding": "6.13",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc64/ftrace: fix clobbered r15 during livepatching\n\nWhile r15 is clobbered always with PPC_FTRACE_OUT_OF_LINE, it is\nnot restored in livepatch sequence leading to not so obvious fails\nlike below:\n\n  BUG: Unable to handle kernel data access on write at 0xc0000000000f9078\n  Faulting instruction address: 0xc0000000018ff958\n  Oops: Kernel access of bad area, sig: 11 [#1]\n  ...\n  NIP:  c0000000018ff958 LR: c0000000018ff930 CTR: c0000000009c0790\n  REGS: c00000005f2e7790 TRAP: 0300   Tainted: G              K      (6.14.0+)\n  MSR:  8000000000009033 \u003cSF,EE,ME,IR,DR,RI,LE\u003e  CR: 2822880b  XER: 20040000\n  CFAR: c0000000008addc0 DAR: c0000000000f9078 DSISR: 0a000000 IRQMASK: 1\n  GPR00: c0000000018f2584 c00000005f2e7a30 c00000000280a900 c000000017ffa488\n  GPR04: 0000000000000008 0000000000000000 c0000000018f24fc 000000000000000d\n  GPR08: fffffffffffe0000 000000000000000d 0000000000000000 0000000000008000\n  GPR12: c0000000009c0790 c000000017ffa480 c00000005f2e7c78 c0000000000f9070\n  GPR16: c00000005f2e7c90 0000000000000000 0000000000000000 0000000000000000\n  GPR20: 0000000000000000 c00000005f3efa80 c00000005f2e7c60 c00000005f2e7c88\n  GPR24: c00000005f2e7c60 0000000000000001 c0000000000f9078 0000000000000000\n  GPR28: 00007fff97960000 c000000017ffa480 0000000000000000 c0000000000f9078\n  ...\n  Call Trace:\n    check_heap_object+0x34/0x390 (unreliable)\n  __mutex_unlock_slowpath.isra.0+0xe4/0x230\n  seq_read_iter+0x430/0xa90\n  proc_reg_read_iter+0xa4/0x200\n  vfs_read+0x41c/0x510\n  ksys_read+0xa4/0x190\n  system_call_exception+0x1d0/0x440\n  system_call_vectored_common+0x15c/0x2ec\n\nFix it by restoring r15 always."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: powerpc64/ftrace: arregla el r15 da\u00f1ado durante el parche en vivo Si bien r15 siempre se da\u00f1a con PPC_FTRACE_OUT_OF_LINE, no se restaura en la secuencia de parche en vivo, lo que lleva a fallas no tan obvias como las siguientes: ERROR: No se puede manejar el acceso a los datos del kernel en escritura en 0xc0000000000f9078 Direcci\u00f3n de instrucci\u00f3n err\u00f3nea: 0xc0000000018ff958 Oops: Acceso al kernel de \u00e1rea defectuosa, sig: 11 [#1] ... NIP: c0000000018ff958 LR: c0000000018ff930 CTR: c0000000009c0790 REGS: c00000005f2e7790 TRAP: 0300 Tainted: GK (6.14.0+) MSR: 8000000000009033  CR: 2822880b XER: 20040000 CFAR: c0000000008addc0 DAR: c0000000000f9078 DSISR: 0a000000 IRQMASK: 1 GPR00: c0000000018f2584 c00000005f2e7a30 c00000000280a900 c000000017ffa488 GPR04: 00000000000000008 00000000000000000 c0000000018f24fc 000000000000000d GPR08: fffffffffffe0000 000000000000000d 0000000000000000 00000000000008000 GPR12: c0000000009c0790 c000000017ffa480 c00000005f2e7c78 c000000000f9070 GPR16: c00000005f2e7c90 000000000000000 000000000000000 000000000000000 GPR20: 000000000000000 c00000005f3efa80 c00000005f2e7c60 c00000005f2e7c88 GPR24: c00000005f2e7c60 0000000000000001 c00000000000f9078 0000000000000000 GPR28: 00007fff97960000 c000000017ffa480 0000000000000000 c0000000000f9078 ... Rastreo de llamadas: check_heap_object+0x34/0x390 (no confiable) __mutex_unlock_slowpath.isra.0+0xe4/0x230 seq_read_iter+0x430/0xa90 proc_reg_read_iter+0xa4/0x200 vfs_read+0x41c/0x510 ksys_read+0xa4/0x190 system_call_exception+0x1d0/0x440 system_call_vectored_common+0x15c/0x2ec Arr\u00e9glelo restaurando r15 siempre."
    }
  ],
  "id": "CVE-2025-38233",
  "lastModified": "2026-07-30T06:23:02.743",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-07-04T14:15:32.953",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a9212bf5ca640232254b31330e86272fe4073bc9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/cb5b691f8273432297611863ac142e17119279e0"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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