Vulnerability-Lookup

FKIE_CVE-2025-37929

Vulnerability from fkie_nvd - Published: 2025-05-20 16:15 - Updated: 2026-06-17 09:15

Severity

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: arm64: errata: Add missing sentinels to Spectre-BHB MIDR arrays Commit a5951389e58d ("arm64: errata: Add newer ARM cores to the spectre_bhb_loop_affected() lists") added some additional CPUs to the Spectre-BHB workaround, including some new arrays for designs that require new 'k' values for the workaround to be effective. Unfortunately, the new arrays omitted the sentinel entry and so is_midr_in_range_list() will walk off the end when it doesn't find a match. With UBSAN enabled, this leads to a crash during boot when is_midr_in_range_list() is inlined (which was more common prior to c8c2647e69be ("arm64: Make _midr_in_range_list() an exported function")): | Internal error: aarch64 BRK: 00000000f2000001 [#1] PREEMPT SMP | pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) | pc : spectre_bhb_loop_affected+0x28/0x30 | lr : is_spectre_bhb_affected+0x170/0x190 | [...] | Call trace: | spectre_bhb_loop_affected+0x28/0x30 | update_cpu_capabilities+0xc0/0x184 | init_cpu_features+0x188/0x1a4 | cpuinfo_store_boot_cpu+0x4c/0x60 | smp_prepare_boot_cpu+0x38/0x54 | start_kernel+0x8c/0x478 | __primary_switched+0xc8/0xd4 | Code: 6b09011f 54000061 52801080 d65f03c0 (d4200020) | ---[ end trace 0000000000000000 ]--- | Kernel panic - not syncing: aarch64 BRK: Fatal exception Add the missing sentinel entries.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/090c8714efe1c3c470301cc2f794c1ee2a57746c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/333579202f09e260e8116321df4c55f80a19b160	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3821cae9bd5a99a42d3d0be1b58e41f072cd4c4c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/446289b8b36b2ee98dabf6388acbddcc33ed41be	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6266b3509b2c6ebf2f9daf2239ff8eb60c5f5bd3	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e68da90ac00d8b681561aeb8f5d6c47af3a04861	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/fee4d171451c1ad9e8aaf65fc0ab7d143a33bd72	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html	Mailing List, Third Party Advisory

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	5.15.181
linux	linux_kernel	6.15
linux	linux_kernel	6.15
linux	linux_kernel	6.15
linux	linux_kernel	6.15
debian	debian_linux	11.0

JSON

To clipboard

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: errata: Add missing sentinels to Spectre-BHB MIDR arrays\n\nCommit a5951389e58d (\"arm64: errata: Add newer ARM cores to the\nspectre_bhb_loop_affected() lists\") added some additional CPUs to the\nSpectre-BHB workaround, including some new arrays for designs that\nrequire new \u0027k\u0027 values for the workaround to be effective.\n\nUnfortunately, the new arrays omitted the sentinel entry and so\nis_midr_in_range_list() will walk off the end when it doesn\u0027t find a\nmatch. With UBSAN enabled, this leads to a crash during boot when\nis_midr_in_range_list() is inlined (which was more common prior to\nc8c2647e69be (\"arm64: Make \u00a0_midr_in_range_list() an exported\nfunction\")):\n\n |  Internal error: aarch64 BRK: 00000000f2000001 [#1] PREEMPT SMP\n |  pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n |  pc : spectre_bhb_loop_affected+0x28/0x30\n |  lr : is_spectre_bhb_affected+0x170/0x190\n | [...]\n |  Call trace:\n |   spectre_bhb_loop_affected+0x28/0x30\n |   update_cpu_capabilities+0xc0/0x184\n |   init_cpu_features+0x188/0x1a4\n |   cpuinfo_store_boot_cpu+0x4c/0x60\n |   smp_prepare_boot_cpu+0x38/0x54\n |   start_kernel+0x8c/0x478\n |   __primary_switched+0xc8/0xd4\n |  Code: 6b09011f 54000061 52801080 d65f03c0 (d4200020)\n |  ---[ end trace 0000000000000000 ]---\n |  Kernel panic - not syncing: aarch64 BRK: Fatal exception\n\nAdd the missing sentinel entries."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: arm64: errata: A\u00f1adir centinelas faltantes a las matrices MIDR de Spectre-BHB. El commit a5951389e58d (\"arm64: errata: A\u00f1adir nuevos n\u00facleos ARM a las listas spectre_bhb_loop_affected()\") a\u00f1adi\u00f3 CPU adicionales a la soluci\u00f3n alternativa de Spectre-BHB, incluyendo nuevas matrices para dise\u00f1os que requieren nuevos valores \u0027k\u0027 para que la soluci\u00f3n sea efectiva. Desafortunadamente, las nuevas matrices omitieron la entrada de centinela, por lo que is_midr_in_range_list() se desviar\u00e1 al final si no encuentra una coincidencia. Con UBSAN habilitado, esto provoca un fallo durante el arranque cuando is_midr_in_range_list() est\u00e1 en l\u00ednea (lo cual era m\u00e1s com\u00fan antes de c8c2647e69be (\"arm64: Convertir _midr_in_range_list() en una funci\u00f3n exportada\")): | Error interno: aarch64 BRK: 00000000f2000001 [#1] PREEMPT SMP | pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) | pc : spectre_bhb_loop_affected+0x28/0x30 | lr : is_spectre_bhb_affected+0x170/0x190 | [...] | Rastreo de llamadas: | spectre_bhb_loop_affected+0x28/0x30 | update_cpu_capabilities+0xc0/0x184 | init_cpu_features+0x188/0x1a4 | cpuinfo_store_boot_cpu+0x4c/0x60 | smp_prepare_boot_cpu+0x38/0x54 | start_kernel+0x8c/0x478 | __primary_switched+0xc8/0xd4 | C\u00f3digo: 6b09011f 54000061 52801080 d65f03c0 (d4200020) | ---[ fin del seguimiento 000000000000000 ]--- | P\u00e1nico del kernel - no sincroniza: aarch64 BRK: Excepci\u00f3n fatal Agregue las entradas centinela faltantes."
    }
  ],
  "id": "CVE-2025-37929",
  "lastModified": "2026-06-17T09:15:43.090",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-05-20T16:15:29.483",
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2025-37929 (GCVE-0-2025-37929)

Vulnerability from cvelistv5 – Published: 2025-05-20 15:21 – Updated: 2026-05-23 15:58

Title

arm64: errata: Add missing sentinels to Spectre-BHB MIDR arrays

Summary

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7033 records in the last 180 days details

References

8 references

URL	Tags
https://git.kernel.org/stable/c/e68da90ac00d8b681…
https://git.kernel.org/stable/c/6266b3509b2c6ebf2…
https://git.kernel.org/stable/c/446289b8b36b2ee98…
https://git.kernel.org/stable/c/3821cae9bd5a99a42…
https://git.kernel.org/stable/c/090c8714efe1c3c47…
https://git.kernel.org/stable/c/333579202f09e260e…
https://git.kernel.org/stable/c/fee4d171451c1ad9e…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 4a2f3d8260a996bc43dcc1ce49ac594db54f4b3e , < e68da90ac00d8b681561aeb8f5d6c47af3a04861 (git) Affected: 46e22de65eb45a67a68ddfe9301f79b0c3821ca8 , < 6266b3509b2c6ebf2f9daf2239ff8eb60c5f5bd3 (git) Affected: a53b3599d9bf9375f9033f2aa1fa92714fb1d0f0 , < 446289b8b36b2ee98dabf6388acbddcc33ed41be (git) Affected: 4117975672c4743cffaf32b6fd018cfacd1b420e , < 3821cae9bd5a99a42d3d0be1b58e41f072cd4c4c (git) Affected: 9ca4fe357464bbdad0db67985275f2694df8dab5 , < 090c8714efe1c3c470301cc2f794c1ee2a57746c (git) Affected: e060dbb7393ed7bdfba6b5ea7566f9ef87381cfb , < 333579202f09e260e8116321df4c55f80a19b160 (git) Affected: a5951389e58d2e816eed3dbec5877de9327fd881 , < fee4d171451c1ad9e8aaf65fc0ab7d143a33bd72 (git) Affected: ed681e90fb244aa883b918c4d8be2614e816c6df (git) Affected: 6.13.12 , < 6.14 (semver)
Linux	Linux	Affected: 5.15.181 , < 5.15.182 (semver) Affected: 6.1.135 , < 6.1.138 (semver) Affected: 6.6.88 , < 6.6.90 (semver) Affected: 6.12.24 , < 6.12.28 (semver) Affected: 6.14.3 , < 6.14.6 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T19:57:27.644Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/arm64/kernel/proton-pack.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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              "versionType": "git"
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            {
              "lessThan": "6266b3509b2c6ebf2f9daf2239ff8eb60c5f5bd3",
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              "lessThan": "090c8714efe1c3c470301cc2f794c1ee2a57746c",
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            },
            {
              "lessThan": "fee4d171451c1ad9e8aaf65fc0ab7d143a33bd72",
              "status": "affected",
              "version": "a5951389e58d2e816eed3dbec5877de9327fd881",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ed681e90fb244aa883b918c4d8be2614e816c6df",
              "versionType": "git"
            },
            {
              "lessThan": "6.14",
              "status": "affected",
              "version": "6.13.12",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/arm64/kernel/proton-pack.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5.15.182",
              "status": "affected",
              "version": "5.15.181",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.138",
              "status": "affected",
              "version": "6.1.135",
              "versionType": "semver"
            },
            {
              "lessThan": "6.6.90",
              "status": "affected",
              "version": "6.6.88",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.28",
              "status": "affected",
              "version": "6.12.24",
              "versionType": "semver"
            },
            {
              "lessThan": "6.14.6",
              "status": "affected",
              "version": "6.14.3",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.182",
                  "versionStartIncluding": "5.15.181",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.138",
                  "versionStartIncluding": "6.1.135",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.90",
                  "versionStartIncluding": "6.6.88",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.28",
                  "versionStartIncluding": "6.12.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14.6",
                  "versionStartIncluding": "6.14.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.13.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: errata: Add missing sentinels to Spectre-BHB MIDR arrays\n\nCommit a5951389e58d (\"arm64: errata: Add newer ARM cores to the\nspectre_bhb_loop_affected() lists\") added some additional CPUs to the\nSpectre-BHB workaround, including some new arrays for designs that\nrequire new \u0027k\u0027 values for the workaround to be effective.\n\nUnfortunately, the new arrays omitted the sentinel entry and so\nis_midr_in_range_list() will walk off the end when it doesn\u0027t find a\nmatch. With UBSAN enabled, this leads to a crash during boot when\nis_midr_in_range_list() is inlined (which was more common prior to\nc8c2647e69be (\"arm64: Make \u00a0_midr_in_range_list() an exported\nfunction\")):\n\n |  Internal error: aarch64 BRK: 00000000f2000001 [#1] PREEMPT SMP\n |  pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n |  pc : spectre_bhb_loop_affected+0x28/0x30\n |  lr : is_spectre_bhb_affected+0x170/0x190\n | [...]\n |  Call trace:\n |   spectre_bhb_loop_affected+0x28/0x30\n |   update_cpu_capabilities+0xc0/0x184\n |   init_cpu_features+0x188/0x1a4\n |   cpuinfo_store_boot_cpu+0x4c/0x60\n |   smp_prepare_boot_cpu+0x38/0x54\n |   start_kernel+0x8c/0x478\n |   __primary_switched+0xc8/0xd4\n |  Code: 6b09011f 54000061 52801080 d65f03c0 (d4200020)\n |  ---[ end trace 0000000000000000 ]---\n |  Kernel panic - not syncing: aarch64 BRK: Fatal exception\n\nAdd the missing sentinel entries."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-23T15:58:36.620Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e68da90ac00d8b681561aeb8f5d6c47af3a04861"
        },
        {
          "url": "https://git.kernel.org/stable/c/6266b3509b2c6ebf2f9daf2239ff8eb60c5f5bd3"
        },
        {
          "url": "https://git.kernel.org/stable/c/446289b8b36b2ee98dabf6388acbddcc33ed41be"
        },
        {
          "url": "https://git.kernel.org/stable/c/3821cae9bd5a99a42d3d0be1b58e41f072cd4c4c"
        },
        {
          "url": "https://git.kernel.org/stable/c/090c8714efe1c3c470301cc2f794c1ee2a57746c"
        },
        {
          "url": "https://git.kernel.org/stable/c/333579202f09e260e8116321df4c55f80a19b160"
        },
        {
          "url": "https://git.kernel.org/stable/c/fee4d171451c1ad9e8aaf65fc0ab7d143a33bd72"
        }
      ],
      "title": "arm64: errata: Add missing sentinels to Spectre-BHB MIDR arrays",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-37929",
    "datePublished": "2025-05-20T15:21:55.253Z",
    "dateReserved": "2025-04-16T04:51:23.970Z",
    "dateUpdated": "2026-05-23T15:58:36.620Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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