cve-2021-3491
Vulnerability from cvelistv5
Published
2021-06-04 01:40
Modified
2024-09-16 22:09
Severity ?
EPSS score ?
Summary
Linux kernel io_uring PROVIDE_BUFFERS MAX_RW_COUNT bypass
References
Impacted products
Vendor | Product | Version | |
---|---|---|---|
▼ | Linux | Linux kernel |
Version: trunk < v5.13-rc4 Version: linux-5.12.y < v5.12.4 Version: linux-5.11.y < v5.11.21 Version: linux-5.10.y < v5.10.37 Version: v5.7-rc1 < 5.7* |
|
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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. 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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).\"},{\"lang\":\"es\",\"value\":\"El subsistema io_uring del kernel de Linux permit\u00eda saltarse el l\u00edmite MAX_RW_COUNT en la operaci\u00f3n PROVIDE_BUFFERS, lo que llevaba a utilizar valores negativos en mem_rw al leer /proc//mem. Esto pod\u00eda utilizarse para crear un desbordamiento de la pila que conduc\u00eda a la ejecuci\u00f3n de c\u00f3digo arbitrario en el kernel. 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Sightings
Author | Source | Type | Date |
---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.