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CVE-2026-64082 riscv: Fix register corruption from uninitialized cregs on error

🗓️ 19 Jul 2026 15:39:54Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 46 Views

Linux kernel riscv fix: avoid register corruption by not calling cregs_to_regs on copyin error.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/riscv/kernel/compat_signal.c",
      "arch/riscv/kernel/ptrace.c"
    ],
    "versions": [
      {
        "version": "7383ee05314be58f8f9f018ee0ac53bef3808aea",
        "lessThan": "f2d88b0d7aebfa4643fc58bbae57210c6daff9c6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7383ee05314be58f8f9f018ee0ac53bef3808aea",
        "lessThan": "66dedb6028c3df6c6a3372dd935b823917e150d5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7383ee05314be58f8f9f018ee0ac53bef3808aea",
        "lessThan": "2a7d1daf2674fe7d5b1cc99a4e3b5f0f72d5958f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7383ee05314be58f8f9f018ee0ac53bef3808aea",
        "lessThan": "0599aa23734c48de9bce36d043a9ec90c23945a1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7383ee05314be58f8f9f018ee0ac53bef3808aea",
        "lessThan": "9e020156833f1ad0d425a1e3d85b65639f1c1c50",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7383ee05314be58f8f9f018ee0ac53bef3808aea",
        "lessThan": "6ebcbb53fc9bc30843054ed99fd60b8e542628f4",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/riscv/kernel/compat_signal.c",
      "arch/riscv/kernel/ptrace.c"
    ],
    "versions": [
      {
        "version": "5.19",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.19",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.187",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.156",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.108",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.49",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.11",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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