{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-37929",
  "modified": "2026-10-07T14:35:31Z",
  "upstream": [
    "CVE-2025-37929"
  ],
  "published": "2025-05-20T15:22:31Z",
  "summary": "arm64: errata: Add missing sentinels to Spectre-BHB MIDR arrays",
  "details": "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 'k' 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't 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.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.12.25-1+rpt1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.12.25+rpt-rpi-2712",
            "binary_version": "1:6.12.25-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.25+rpt-rpi-v8",
            "binary_version": "1:6.12.25-1+rpt1"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.12.25-1+rpt1": {
            "linux_commit": "3dd2c2c507c271d411fab2e82a2b3b7e0b6d3f16",
            "upstream_version": "6.12.25",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.12.28"
          }
        }
      }
    },
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:13",
        "name": "linux"
      },
      "versions": [
        "1:6.12.25-1+rpt1+trixie"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.12.25+rpt-rpi-2712",
            "binary_version": "1:6.12.25-1+rpt1+trixie"
          },
          {
            "binary_name": "linux-image-6.12.25+rpt-rpi-v8",
            "binary_version": "1:6.12.25-1+rpt1+trixie"
          },
          {
            "binary_name": "linux-image-6.12.25+rpt-rpi-v8-rt",
            "binary_version": "1:6.12.25-1+rpt1+trixie"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.12.25-1+rpt1+trixie": {
            "linux_commit": "3dd2c2c507c271d411fab2e82a2b3b7e0b6d3f16",
            "upstream_version": "6.12.25",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.12.28"
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-37929"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e68da90ac00d8b681561aeb8f5d6c47af3a04861"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6266b3509b2c6ebf2f9daf2239ff8eb60c5f5bd3"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/446289b8b36b2ee98dabf6388acbddcc33ed41be"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3821cae9bd5a99a42d3d0be1b58e41f072cd4c4c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/090c8714efe1c3c470301cc2f794c1ee2a57746c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/333579202f09e260e8116321df4c55f80a19b160"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/fee4d171451c1ad9e8aaf65fc0ab7d143a33bd72"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-24T06:48:58Z"
  }
}