CVE-2025-37846 (GCVE-0-2025-37846)

Vulnerability from cvelistv5 – Published: 2025-05-09 06:41 – Updated: 2025-05-26 05:22
VLAI?
Title
arm64: mops: Do not dereference src reg for a set operation
Summary
In the Linux kernel, the following vulnerability has been resolved: arm64: mops: Do not dereference src reg for a set operation The source register is not used for SET* and reading it can result in a UBSAN out-of-bounds array access error, specifically when the MOPS exception is taken from a SET* sequence with XZR (reg 31) as the source. Architecturally this is the only case where a src/dst/size field in the ESR can be reported as 31. Prior to 2de451a329cf662b the code in do_el0_mops() was benign as the use of pt_regs_read_reg() prevented the out-of-bounds access.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2de451a329cf662beeba71f63c7f83ee24ca6642 , < eec737e17e5567e08148550a7f1d94d495b9fb17 (git)
Affected: 2de451a329cf662beeba71f63c7f83ee24ca6642 , < 43267d934eacff6c70e15545d804ebbcab8a0bf5 (git)
Affected: 2de451a329cf662beeba71f63c7f83ee24ca6642 , < 5f6022a74147675124b781fdc056b291850e7786 (git)
Affected: 2de451a329cf662beeba71f63c7f83ee24ca6642 , < a13bfa4fe0d6949cea14718df2d1fe84c38cd113 (git)
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    Linux Linux Affected: 6.7
Unaffected: 0 , < 6.7 (semver)
Unaffected: 6.12.24 , ≤ 6.12.* (semver)
Unaffected: 6.13.12 , ≤ 6.13.* (semver)
Unaffected: 6.14.3 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/arm64/include/asm/traps.h"
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              "operator": "OR"
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: mops: Do not dereference src reg for a set operation\n\nThe source register is not used for SET* and reading it can result in\na UBSAN out-of-bounds array access error, specifically when the MOPS\nexception is taken from a SET* sequence with XZR (reg 31) as the\nsource. Architecturally this is the only case where a src/dst/size\nfield in the ESR can be reported as 31.\n\nPrior to 2de451a329cf662b the code in do_el0_mops() was benign as the\nuse of pt_regs_read_reg() prevented the out-of-bounds access."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-26T05:22:10.850Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/eec737e17e5567e08148550a7f1d94d495b9fb17"
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          "url": "https://git.kernel.org/stable/c/43267d934eacff6c70e15545d804ebbcab8a0bf5"
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        },
        {
          "url": "https://git.kernel.org/stable/c/a13bfa4fe0d6949cea14718df2d1fe84c38cd113"
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      ],
      "title": "arm64: mops: Do not dereference src reg for a set operation",
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  "cveMetadata": {
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    "cveId": "CVE-2025-37846",
    "datePublished": "2025-05-09T06:41:54.648Z",
    "dateReserved": "2025-04-16T04:51:23.953Z",
    "dateUpdated": "2025-05-26T05:22:10.850Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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