CVE-2025-38233 (GCVE-0-2025-38233)
Vulnerability from cvelistv5
Published
2025-07-04 13:37
Modified
2025-07-28 04:15
Severity ?
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
Impacted products
Vendor Product Version
Linux Linux Version: eec37961a56aa4f3fe1c33ffd48eec7d1bb0c009
Version: eec37961a56aa4f3fe1c33ffd48eec7d1bb0c009
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "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"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.4",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T04:15:49.068Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a9212bf5ca640232254b31330e86272fe4073bc9"
        },
        {
          "url": "https://git.kernel.org/stable/c/cb5b691f8273432297611863ac142e17119279e0"
        }
      ],
      "title": "powerpc64/ftrace: fix clobbered r15 during livepatching",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38233",
    "datePublished": "2025-07-04T13:37:46.293Z",
    "dateReserved": "2025-04-16T04:51:23.996Z",
    "dateUpdated": "2025-07-28T04:15:49.068Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38233\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-04T14:15:32.953\",\"lastModified\":\"2025-07-08T16:18:53.607\",\"vulnStatus\":\"Awaiting Analysis\",\"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.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/a9212bf5ca640232254b31330e86272fe4073bc9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cb5b691f8273432297611863ac142e17119279e0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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