Use-after-free vulnerability in nvme-tcp
Summary
GSD-2022-1000351: nvme-tcp: fix possible use-after-free in transport error_recovery work. Affects Kernel versions < 61a26ffd5ad3ece456d74c4c79f7b5e3f440a141. No fix is published. How to fix ↓
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Background
The nvme-tcp package is a component of the Linux Kernel that provides support for NVMe over TCP. NVMe (Non-Volatile Memory Express) is a protocol designed for accessing solid-state drives (SSDs) over a PCI Express (PCIe) bus. The nvme-tcp package enables the use of NVMe devices over a TCP/IP network.
The vulnerability identified in nvme-tcp is a use-after-free issue that occurs during the transport error recovery work. This vulnerability could potentially be exploited by an attacker to execute arbitrary code or cause a denial-of-service (DoS) condition on a vulnerable system.
Vulnerability Detail
The use-after-free vulnerability in nvme-tcp arises from a flaw in the transport error recovery work. When certain error conditions occur during the transport layer, the code may incorrectly free a memory object that is still being referenced. This can lead to a situation where an attacker can manipulate the freed memory to execute arbitrary code or cause a crash.
The impact of this vulnerability depends on the context in which the nvme-tcp package is used. If the package is utilized in a critical system or network infrastructure, an attacker exploiting this vulnerability could potentially gain unauthorized access, compromise data integrity, or disrupt the availability of services.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is strongly advised to apply the recommended fix by updating the Linux Kernel to the patched version.
Conclusion
The use-after-free vulnerability in nvme-tcp can be mitigated by updating the Linux Kernel to version v5.4.181 or later. This vulnerability could potentially be exploited to execute arbitrary code or cause a denial-of-service condition. It is recommended to apply the fix as soon as possible to ensure the security and stability of systems using the nvme-tcp package.
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FAQ
nvme-tcp is a component of the Linux Kernel that enables the use of NVMe devices over a TCP/IP network.
A use-after-free vulnerability occurs when a program continues to reference a memory object after it has been freed. This can lead to memory corruption and potentially allow an attacker to execute arbitrary code or cause a crash.
The impact of this vulnerability depends on the context in which the nvme-tcp package is used. If the package is utilized in a critical system or network infrastructure, an attacker exploiting this vulnerability could potentially gain unauthorized access, compromise data integrity, or disrupt the availability of services.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.4.181 or later. This fix is implemented in commit 61a26ffd5ad3ece456d74c4c79f7b5e3f440a141 of the Linux Kernel source code.
There is no known workaround for this vulnerability. It is strongly advised to apply the recommended fix by updating the Linux Kernel to the patched version.
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