2023-04-24 12:24:31 +02:00
{
"id" : "CVE-2021-3490" ,
"sourceIdentifier" : "security@ubuntu.com" ,
"published" : "2021-06-04T02:15:07.150" ,
2024-11-23 15:12:23 +00:00
"lastModified" : "2024-11-21T06:21:39.897" ,
"vulnStatus" : "Modified" ,
2024-12-08 03:06:42 +00:00
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2023-04-24 12:24:31 +02:00
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"value" : "The eBPF ALU32 bounds tracking for bitwise ops (AND, OR and XOR) in the Linux kernel did not properly update 32-bit bounds, which could be turned into out of bounds reads and writes in the Linux kernel and therefore, arbitrary code execution. This issue was fixed via commit 049c4e13714e (\"bpf: Fix alu32 const subreg bound tracking on bitwise operations\") (v5.13-rc4) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. The AND/OR issues were introduced by commit 3f50f132d840 (\"bpf: Verifier, do explicit ALU32 bounds tracking\") (5.7-rc1) and the XOR variant was introduced by 2921c90d4718 (\"bpf:Fix a verifier failure with xor\") ( 5.10-rc1)."
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"value" : "El seguimiento de los l\u00edmites de la ALU32 de eBPF para las operaciones por bits (AND, OR y XOR) en el kernel de Linux no actualizaba correctamente los l\u00edmites de 32 bits, lo que pod\u00eda convertirse en lecturas y escrituras fuera de los l\u00edmites en el kernel de Linux y, por tanto, en la ejecuci\u00f3n de c\u00f3digo arbitrario. Este problema fue corregido a trav\u00e9s del commit 049c4e13714e (\"bpf: Fix alu32 const subreg bound tracking on bitwise operations\") (v5.13-rc4) y retrocedido a los kernels estables en v5.12.4, v5.11.21 y v5.10.37. Los problemas de AND/OR fueron introducidos por el commit 3f50f132d840 (\"bpf: Verifier, do explicit ALU32 bounds tracking\") (5.7-rc1) y la variante XOR fue introducida por 2921c90d4718 (\"bpf:Fix a verifier failure with xor\") ( 5.10-rc1)"
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2024-11-23 15:12:23 +00:00
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2023-04-24 12:24:31 +02:00
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2023-04-24 12:24:31 +02:00
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2024-11-23 15:12:23 +00:00
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2023-04-24 12:24:31 +02:00
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2024-11-23 15:12:23 +00:00
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2023-04-24 12:24:31 +02:00
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2023-04-24 12:24:31 +02:00
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2023-04-24 12:24:31 +02:00
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2023-04-24 12:24:31 +02:00
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2023-04-24 12:24:31 +02:00
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2024-11-23 15:12:23 +00:00
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2023-04-24 12:24:31 +02:00
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