CVE-2024-57874 (GCVE-0-2024-57874)
Vulnerability from cvelistv5
Published
2025-01-11 14:47
Modified
2025-05-04 10:05
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: arm64: ptrace: fix partial SETREGSET for NT_ARM_TAGGED_ADDR_CTRL Currently tagged_addr_ctrl_set() doesn't initialize the temporary 'ctrl' variable, and a SETREGSET call with a length of zero will leave this uninitialized. Consequently tagged_addr_ctrl_set() will consume an arbitrary value, potentially leaking up to 64 bits of memory from the kernel stack. The read is limited to a specific slot on the stack, and the issue does not provide a write mechanism. As set_tagged_addr_ctrl() only accepts values where bits [63:4] zero and rejects other values, a partial SETREGSET attempt will randomly succeed or fail depending on the value of the uninitialized value, and the exposure is significantly limited. Fix this by initializing the temporary value before copying the regset from userspace, as for other regsets (e.g. NT_PRSTATUS, NT_PRFPREG, NT_ARM_SYSTEM_CALL). In the case of a zero-length write, the existing value of the tagged address ctrl will be retained. The NT_ARM_TAGGED_ADDR_CTRL regset is only visible in the user_aarch64_view used by a native AArch64 task to manipulate another native AArch64 task. As get_tagged_addr_ctrl() only returns an error value when called for a compat task, tagged_addr_ctrl_get() and tagged_addr_ctrl_set() should never observe an error value from get_tagged_addr_ctrl(). Add a WARN_ON_ONCE() to both to indicate that such an error would be unexpected, and error handlnig is not missing in either case.
References
Impacted products
Vendor Product Version
Linux Linux Version: 2200aa7154cb7ef76bac93e98326883ba64bfa2e
Version: 2200aa7154cb7ef76bac93e98326883ba64bfa2e
Version: 2200aa7154cb7ef76bac93e98326883ba64bfa2e
Version: 2200aa7154cb7ef76bac93e98326883ba64bfa2e
Version: 2200aa7154cb7ef76bac93e98326883ba64bfa2e
Version: 2200aa7154cb7ef76bac93e98326883ba64bfa2e
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: ptrace: fix partial SETREGSET for NT_ARM_TAGGED_ADDR_CTRL\n\nCurrently tagged_addr_ctrl_set() doesn\u0027t initialize the temporary \u0027ctrl\u0027\nvariable, and a SETREGSET call with a length of zero will leave this\nuninitialized. Consequently tagged_addr_ctrl_set() will consume an\narbitrary value, potentially leaking up to 64 bits of memory from the\nkernel stack. The read is limited to a specific slot on the stack, and\nthe issue does not provide a write mechanism.\n\nAs set_tagged_addr_ctrl() only accepts values where bits [63:4] zero and\nrejects other values, a partial SETREGSET attempt will randomly succeed\nor fail depending on the value of the uninitialized value, and the\nexposure is significantly limited.\n\nFix this by initializing the temporary value before copying the regset\nfrom userspace, as for other regsets (e.g. NT_PRSTATUS, NT_PRFPREG,\nNT_ARM_SYSTEM_CALL). In the case of a zero-length write, the existing\nvalue of the tagged address ctrl will be retained.\n\nThe NT_ARM_TAGGED_ADDR_CTRL regset is only visible in the\nuser_aarch64_view used by a native AArch64 task to manipulate another\nnative AArch64 task. As get_tagged_addr_ctrl() only returns an error\nvalue when called for a compat task, tagged_addr_ctrl_get() and\ntagged_addr_ctrl_set() should never observe an error value from\nget_tagged_addr_ctrl(). Add a WARN_ON_ONCE() to both to indicate that\nsuch an error would be unexpected, and error handlnig is not missing in\neither case."
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    "dateReserved": "2025-01-11T14:45:42.022Z",
    "dateUpdated": "2025-05-04T10:05:35.803Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-57874\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-01-11T15:15:07.680\",\"lastModified\":\"2025-02-03T14:55:54.650\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\narm64: ptrace: fix partial SETREGSET for NT_ARM_TAGGED_ADDR_CTRL\\n\\nCurrently tagged_addr_ctrl_set() doesn\u0027t initialize the temporary \u0027ctrl\u0027\\nvariable, and a SETREGSET call with a length of zero will leave this\\nuninitialized. Consequently tagged_addr_ctrl_set() will consume an\\narbitrary value, potentially leaking up to 64 bits of memory from the\\nkernel stack. The read is limited to a specific slot on the stack, and\\nthe issue does not provide a write mechanism.\\n\\nAs set_tagged_addr_ctrl() only accepts values where bits [63:4] zero and\\nrejects other values, a partial SETREGSET attempt will randomly succeed\\nor fail depending on the value of the uninitialized value, and the\\nexposure is significantly limited.\\n\\nFix this by initializing the temporary value before copying the regset\\nfrom userspace, as for other regsets (e.g. NT_PRSTATUS, NT_PRFPREG,\\nNT_ARM_SYSTEM_CALL). In the case of a zero-length write, the existing\\nvalue of the tagged address ctrl will be retained.\\n\\nThe NT_ARM_TAGGED_ADDR_CTRL regset is only visible in the\\nuser_aarch64_view used by a native AArch64 task to manipulate another\\nnative AArch64 task. As get_tagged_addr_ctrl() only returns an error\\nvalue when called for a compat task, tagged_addr_ctrl_get() and\\ntagged_addr_ctrl_set() should never observe an error value from\\nget_tagged_addr_ctrl(). Add a WARN_ON_ONCE() to both to indicate that\\nsuch an error would be unexpected, and error handlnig is not missing in\\neither case.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: arm64: ptrace: arreglo de SETREGSET parcial para NT_ARM_TAGGED_ADDR_CTRL Actualmente, tagged_addr_ctrl_set() no inicializa la variable temporal \u0027ctrl\u0027, y una llamada a SETREGSET con una longitud de cero la dejar\u00e1 sin inicializar. En consecuencia, tagged_addr_ctrl_set() consumir\u00e1 un valor arbitrario, lo que potencialmente filtrar\u00e1 hasta 64 bits de memoria de la pila del kernel. La lectura est\u00e1 limitada a una ranura espec\u00edfica en la pila, y el problema no proporciona un mecanismo de escritura. Como set_tagged_addr_ctrl() solo acepta valores donde los bits [63:4] sean cero y rechaza otros valores, un intento de SETREGSET parcial tendr\u00e1 \u00e9xito o fallar\u00e1 aleatoriamente dependiendo del valor del valor no inicializado, y la exposici\u00f3n es significativamente limitada. Solucione esto inicializando el valor temporal antes de copiar el conjunto de registros desde el espacio de usuario, como para otros conjuntos de registros (por ejemplo, NT_PRSTATUS, NT_PRFPREG, NT_ARM_SYSTEM_CALL). En el caso de una escritura de longitud cero, se conservar\u00e1 el valor existente de la direcci\u00f3n etiquetada ctrl. El conjunto de registros NT_ARM_TAGGED_ADDR_CTRL solo es visible en la vista user_aarch64_view utilizada por una tarea nativa de AArch64 para manipular otra tarea nativa de AArch64. Como get_tagged_addr_ctrl() solo devuelve un valor de error cuando se llama para una tarea de compatibilidad, tagged_addr_ctrl_get() y tagged_addr_ctrl_set() nunca deben observar un valor de error de get_tagged_addr_ctrl(). Agregue un WARN_ON_ONCE() a ambos para indicar que dicho error ser\u00eda inesperado y que la gesti\u00f3n de errores no falta en ninguno de los casos.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H\",\"baseScore\":6.1,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":4.2}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-908\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.10\",\"versionEndExcluding\":\"5.10.231\",\"matchCriteriaId\":\"99B1CA0C-8181-4898-83DA-D6AC222C2236\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.174\",\"matchCriteriaId\":\"419FD073-1517-4FD5-8158-F94BC68A1E89\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.120\",\"matchCriteriaId\":\"09AC6122-E2A4-40FE-9D33-268A1B2EC265\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.66\",\"matchCriteriaId\":\"29A976AD-B9AB-4A95-9F08-7669F8847EB9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.5\",\"matchCriteriaId\":\"9501D045-7A94-42CA-8B03-821BE94A65B7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"62567B3C-6CEE-46D0-BC2E-B3717FBF7D13\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1152dd13845efde5554f80c7e1233bae1d26bd3e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1370cf3eb5495d70e00547598583a4cd45b40b99\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1c176f5155ee6161fee6f416b64aa50394d3f220\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/96035c0093db258975b8887676afe59a64c34a72\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/abd614bbfcee73247495bd9472da8f85ac83546e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ca62d90085f4af36de745883faab9f8a7cbb45d3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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