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CVE-2023-54278 (GCVE-0-2023-54278)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:16 – Updated: 2026-05-11 19:58
VLAI
Title
s390/vmem: split pages when debug pagealloc is enabled
Summary
In the Linux kernel, the following vulnerability has been resolved: s390/vmem: split pages when debug pagealloc is enabled Since commit bb1520d581a3 ("s390/mm: start kernel with DAT enabled") the kernel crashes early during boot when debug pagealloc is enabled: mem auto-init: stack:off, heap alloc:off, heap free:off addressing exception: 0005 ilc:2 [#1] SMP DEBUG_PAGEALLOC Modules linked in: CPU: 0 PID: 0 Comm: swapper Not tainted 6.5.0-rc3-09759-gc5666c912155 #630 [..] Krnl Code: 00000000001325f6: ec5600248064 cgrj %r5,%r6,8,000000000013263e 00000000001325fc: eb880002000c srlg %r8,%r8,2 #0000000000132602: b2210051 ipte %r5,%r1,%r0,0 >0000000000132606: b90400d1 lgr %r13,%r1 000000000013260a: 41605008 la %r6,8(%r5) 000000000013260e: a7db1000 aghi %r13,4096 0000000000132612: b221006d ipte %r6,%r13,%r0,0 0000000000132616: e3d0d0000171 lay %r13,4096(%r13) Call Trace: __kernel_map_pages+0x14e/0x320 __free_pages_ok+0x23a/0x5a8) free_low_memory_core_early+0x214/0x2c8 memblock_free_all+0x28/0x58 mem_init+0xb6/0x228 mm_core_init+0xb6/0x3b0 start_kernel+0x1d2/0x5a8 startup_continue+0x36/0x40 Kernel panic - not syncing: Fatal exception: panic_on_oops This is caused by using large mappings on machines with EDAT1/EDAT2. Add the code to split the mappings into 4k pages if debug pagealloc is enabled by CONFIG_DEBUG_PAGEALLOC_ENABLE_DEFAULT or the debug_pagealloc kernel command line option.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: bb1520d581a3a46e2d6e12bb74604ace33404de5 , < 601e467e29a960f7ab7ec4075afc6a68c3532a65 (git)
Affected: bb1520d581a3a46e2d6e12bb74604ace33404de5 , < edc1e4b6e26536868ef819a735e04a5b32c10589 (git)
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Linux Linux Affected: 6.3
Unaffected: 0 , < 6.3 (semver)
Unaffected: 6.4.10 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/s390/mm/vmem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "601e467e29a960f7ab7ec4075afc6a68c3532a65",
              "status": "affected",
              "version": "bb1520d581a3a46e2d6e12bb74604ace33404de5",
              "versionType": "git"
            },
            {
              "lessThan": "edc1e4b6e26536868ef819a735e04a5b32c10589",
              "status": "affected",
              "version": "bb1520d581a3a46e2d6e12bb74604ace33404de5",
              "versionType": "git"
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          "vendor": "Linux",
          "versions": [
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              "version": "6.3"
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              "status": "unaffected",
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      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4.10",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/vmem: split pages when debug pagealloc is enabled\n\nSince commit bb1520d581a3 (\"s390/mm: start kernel with DAT enabled\")\nthe kernel crashes early during boot when debug pagealloc is enabled:\n\nmem auto-init: stack:off, heap alloc:off, heap free:off\naddressing exception: 0005 ilc:2 [#1] SMP DEBUG_PAGEALLOC\nModules linked in:\nCPU: 0 PID: 0 Comm: swapper Not tainted 6.5.0-rc3-09759-gc5666c912155 #630\n[..]\nKrnl Code: 00000000001325f6: ec5600248064 cgrj %r5,%r6,8,000000000013263e\n           00000000001325fc: eb880002000c srlg %r8,%r8,2\n          #0000000000132602: b2210051     ipte %r5,%r1,%r0,0\n          \u003e0000000000132606: b90400d1     lgr %r13,%r1\n           000000000013260a: 41605008     la %r6,8(%r5)\n           000000000013260e: a7db1000     aghi %r13,4096\n           0000000000132612: b221006d     ipte %r6,%r13,%r0,0\n           0000000000132616: e3d0d0000171 lay %r13,4096(%r13)\n\nCall Trace:\n __kernel_map_pages+0x14e/0x320\n __free_pages_ok+0x23a/0x5a8)\n free_low_memory_core_early+0x214/0x2c8\n memblock_free_all+0x28/0x58\n mem_init+0xb6/0x228\n mm_core_init+0xb6/0x3b0\n start_kernel+0x1d2/0x5a8\n startup_continue+0x36/0x40\nKernel panic - not syncing: Fatal exception: panic_on_oops\n\nThis is caused by using large mappings on machines with EDAT1/EDAT2. Add\nthe code to split the mappings into 4k pages if debug pagealloc is enabled\nby CONFIG_DEBUG_PAGEALLOC_ENABLE_DEFAULT or the debug_pagealloc kernel\ncommand line option."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:58:52.943Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/601e467e29a960f7ab7ec4075afc6a68c3532a65"
        },
        {
          "url": "https://git.kernel.org/stable/c/edc1e4b6e26536868ef819a735e04a5b32c10589"
        }
      ],
      "title": "s390/vmem: split pages when debug pagealloc is enabled",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54278",
    "datePublished": "2025-12-30T12:16:06.350Z",
    "dateReserved": "2025-12-30T12:06:44.524Z",
    "dateUpdated": "2026-05-11T19:58:52.943Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-54278",
      "date": "2026-09-16",
      "epss": "0.00182",
      "percentile": "0.08012"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-54278\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-30T13:16:16.757\",\"lastModified\":\"2026-06-17T06:47:08.720\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ns390/vmem: split pages when debug pagealloc is enabled\\n\\nSince commit bb1520d581a3 (\\\"s390/mm: start kernel with DAT enabled\\\")\\nthe kernel crashes early during boot when debug pagealloc is enabled:\\n\\nmem auto-init: stack:off, heap alloc:off, heap free:off\\naddressing exception: 0005 ilc:2 [#1] SMP DEBUG_PAGEALLOC\\nModules linked in:\\nCPU: 0 PID: 0 Comm: swapper Not tainted 6.5.0-rc3-09759-gc5666c912155 #630\\n[..]\\nKrnl Code: 00000000001325f6: ec5600248064 cgrj %r5,%r6,8,000000000013263e\\n           00000000001325fc: eb880002000c srlg %r8,%r8,2\\n          #0000000000132602: b2210051     ipte %r5,%r1,%r0,0\\n          \u003e0000000000132606: b90400d1     lgr %r13,%r1\\n           000000000013260a: 41605008     la %r6,8(%r5)\\n           000000000013260e: a7db1000     aghi %r13,4096\\n           0000000000132612: b221006d     ipte %r6,%r13,%r0,0\\n           0000000000132616: e3d0d0000171 lay %r13,4096(%r13)\\n\\nCall Trace:\\n __kernel_map_pages+0x14e/0x320\\n __free_pages_ok+0x23a/0x5a8)\\n free_low_memory_core_early+0x214/0x2c8\\n memblock_free_all+0x28/0x58\\n mem_init+0xb6/0x228\\n mm_core_init+0xb6/0x3b0\\n start_kernel+0x1d2/0x5a8\\n startup_continue+0x36/0x40\\nKernel panic - not syncing: Fatal exception: panic_on_oops\\n\\nThis is caused by using large mappings on machines with EDAT1/EDAT2. Add\\nthe code to split the mappings into 4k pages if debug pagealloc is enabled\\nby CONFIG_DEBUG_PAGEALLOC_ENABLE_DEFAULT or the debug_pagealloc kernel\\ncommand line option.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\\n\\ns390/vmem: dividir p\u00e1ginas cuando debug pagealloc est\u00e1 habilitado\\n\\nDesde el commit bb1520d581a3 (\u0027s390/mm: iniciar kernel con DAT habilitado\u0027), el kernel falla temprano durante el arranque cuando debug pagealloc est\u00e1 habilitado:\\n\\ninicializaci\u00f3n autom\u00e1tica de memoria: pila:desactivado, asignaci\u00f3n de heap:desactivado, liberaci\u00f3n de heap:desactivado\\nexcepci\u00f3n de direccionamiento: 0005 ilc:2 [#1] SMP DEBUG_PAGEALLOC\\nM\u00f3dulos enlazados:\\nCPU: 0 PID: 0 Comm: swapper No contaminado 6.5.0-rc3-09759-gc5666c912155 #630\\n[..]\\nC\u00f3digo del kernel: 00000000001325f6: ec5600248064 cgrj %r5,%r6,8,000000000013263e\\n           00000000001325fc: eb880002000c srlg %r8,%r8,2\\n          #0000000000132602: b2210051     ipte %r5,%r1,%r0,0\\n          \u0026gt;0000000000132606: b90400d1     lgr %r13,%r1\\n           000000000013260a: 41605008     la %r6,8(%r5)\\n           000000000013260e: a7db1000     aghi %r13,4096\\n           0000000000132612: b221006d     ipte %r6,%r13,%r0,0\\n           0000000000132616: e3d0d0000171 lay %r13,4096(%r13)\\n\\nTraza de llamadas:\\n __kernel_map_pages+0x14e/0x320\\n __free_pages_ok+0x23a/0x5a8)\\n free_low_memory_core_early+0x214/0x2c8\\n memblock_free_all+0x28/0x58\\n mem_init+0xb6/0x228\\n mm_core_init+0xb6/0x3b0\\n start_kernel+0x1d2/0x5a8\\n startup_continue+0x36/0x40\\nP\u00e1nico del kernel - no sincronizando: Excepci\u00f3n fatal: panic_on_oops\\n\\nEsto es causado por el uso de mapeos grandes en m\u00e1quinas con EDAT1/EDAT2. A\u00f1adir el c\u00f3digo para dividir los mapeos en p\u00e1ginas de 4k si debug pagealloc est\u00e1 habilitado por CONFIG_DEBUG_PAGEALLOC_ENABLE_DEFAULT o la opci\u00f3n de l\u00ednea de comandos del kernel debug_pagealloc.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"arch/s390/mm/vmem.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"bb1520d581a3a46e2d6e12bb74604ace33404de5\",\"lessThan\":\"601e467e29a960f7ab7ec4075afc6a68c3532a65\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"bb1520d581a3a46e2d6e12bb74604ace33404de5\",\"lessThan\":\"edc1e4b6e26536868ef819a735e04a5b32c10589\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"arch/s390/mm/vmem.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.3\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.3\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.4.10\",\"lessThanOrEqual\":\"6.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.5\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/601e467e29a960f7ab7ec4075afc6a68c3532a65\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/edc1e4b6e26536868ef819a735e04a5b32c10589\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T23:42:35+00:00",
      "cve": "CVE-2023-54278",
      "id": "CVE-2023-54278",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:fixed": "305",
      "product_status:known_affected": "36",
      "product_status:known_not_affected": "152",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: s390/vmem: split pages when debug pagealloc is enabled",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-54278.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-01T01:14:56Z",
      "cve": "CVE-2023-54278",
      "id": "CVE-2023-54278",
      "initial_release_date": "2025-12-31T00:26:51Z",
      "product_status:known_affected": "394",
      "product_status:known_not_affected": "457",
      "product_status:recommended": "255",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-54278",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-54278.json",
      "version": "36"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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