gsd-2021-3491
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
The io_uring subsystem in the Linux kernel allowed the MAX_RW_COUNT limit to be bypassed in the PROVIDE_BUFFERS operation, which led to negative values being usedin mem_rw when reading /proc/<PID>/mem. This could be used to create a heap overflow leading to arbitrary code execution in the kernel. It was addressed via commit d1f82808877b ("io_uring: truncate lengths larger than MAX_RW_COUNT on provide buffers") (v5.13-rc1) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. It was introduced in ddf0322db79c ("io_uring: add IORING_OP_PROVIDE_BUFFERS") (v5.7-rc1).
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-3491",
"description": "The io_uring subsystem in the Linux kernel allowed the MAX_RW_COUNT limit to be bypassed in the PROVIDE_BUFFERS operation, which led to negative values being usedin mem_rw when reading /proc/\u003cPID\u003e/mem. This could be used to create a heap overflow leading to arbitrary code execution in the kernel. It was addressed via commit d1f82808877b (\"io_uring: truncate lengths larger than MAX_RW_COUNT on provide buffers\") (v5.13-rc1) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. It was introduced in ddf0322db79c (\"io_uring: add IORING_OP_PROVIDE_BUFFERS\") (v5.7-rc1).",
"id": "GSD-2021-3491",
"references": [
"https://www.suse.com/security/cve/CVE-2021-3491.html",
"https://ubuntu.com/security/CVE-2021-3491",
"https://advisories.mageia.org/CVE-2021-3491.html",
"https://security.archlinux.org/CVE-2021-3491"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
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],
"details": "The io_uring subsystem in the Linux kernel allowed the MAX_RW_COUNT limit to be bypassed in the PROVIDE_BUFFERS operation, which led to negative values being usedin mem_rw when reading /proc/\u003cPID\u003e/mem. This could be used to create a heap overflow leading to arbitrary code execution in the kernel. It was addressed via commit d1f82808877b (\"io_uring: truncate lengths larger than MAX_RW_COUNT on provide buffers\") (v5.13-rc1) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. It was introduced in ddf0322db79c (\"io_uring: add IORING_OP_PROVIDE_BUFFERS\") (v5.7-rc1).",
"id": "GSD-2021-3491",
"modified": "2023-12-13T01:23:34.013680Z",
"schema_version": "1.4.0"
}
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"TITLE": "Linux kernel io_uring PROVIDE_BUFFERS MAX_RW_COUNT bypass"
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"nvd.nist.gov": {
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},
"lastModifiedDate": "2021-09-14T14:31Z",
"publishedDate": "2021-06-04T02:15Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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