What is the severity of CVE-2021-47278?

CVE-2021-47278 has been classified with a severity rating that reflects its potential impact on system integrity.

How do I fix CVE-2021-47278?

To fix CVE-2021-47278, update the Linux kernel to a version newer than 5.12.11 or any of the 5.13 release candidates.

What systems are affected by CVE-2021-47278?

CVE-2021-47278 affects specific versions of the Linux kernel, including versions up to 5.12.11 and all 5.13 release candidates.

Is CVE-2021-47278 a remote exploit?

CVE-2021-47278 is not categorized as a remote exploit but can lead to local privilege escalation under certain conditions.

What are the potential impacts of CVE-2021-47278?

The potential impacts of CVE-2021-47278 include system instability and possible unauthorized actions due to a use-after-free vulnerability.

Vulnerability/
CVE-2021-47278

high

7.8

CWE

416

21/5/2024

26/12/2024

CVE-2021-47278: bus: mhi: pci_generic: Fix possible use-after-free in mhi_pci_remove()

First published: Tue May 21 2024(Updated: )

In the Linux kernel, the following vulnerability has been resolved: bus: mhi: pci_generic: Fix possible use-after-free in mhi_pci_remove() This driver's remove path calls del_timer(). However, that function does not wait until the timer handler finishes. This means that the timer handler may still be running after the driver's remove function has finished, which would result in a use-after-free. Fix by calling del_timer_sync(), which makes sure the timer handler has finished, and unable to re-schedule itself.

Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Affected Software	Affected Version	How to fix
Linux Kernel	>=5.12<5.12.11
Linux Kernel	=5.13-rc1
Linux Kernel	=5.13-rc2
Linux Kernel	=5.13-rc3
Linux Kernel	=5.13-rc4
Linux Kernel	=5.13-rc5

Remedy

https://git.kernel.org/stable/c/0b67808ade8893a1b3608ddd74fac7854786c919

Remedy

https://git.kernel.org/stable/c/c597d5c59c7a6417dba06590f59b922e01188e8d

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-47278?
CVE-2021-47278 has been classified with a severity rating that reflects its potential impact on system integrity.
How do I fix CVE-2021-47278?
To fix CVE-2021-47278, update the Linux kernel to a version newer than 5.12.11 or any of the 5.13 release candidates.
What systems are affected by CVE-2021-47278?
CVE-2021-47278 affects specific versions of the Linux kernel, including versions up to 5.12.11 and all 5.13 release candidates.
Is CVE-2021-47278 a remote exploit?
CVE-2021-47278 is not categorized as a remote exploit but can lead to local privilege escalation under certain conditions.
What are the potential impacts of CVE-2021-47278?
The potential impacts of CVE-2021-47278 include system instability and possible unauthorized actions due to a use-after-free vulnerability.

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agent/last-modified-date
agent/softwarecombine
agent/source
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collector/nvd-api
source/NVD
agent/software-canonical-lookup
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vendor/linux
canonical/linux kernel
version/linux kernel/5.12
version/linux kernel/5.13-rc1
version/linux kernel/5.13-rc2
version/linux kernel/5.13-rc3
version/linux kernel/5.13-rc4
version/linux kernel/5.13-rc5

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Frequently Asked Questions

What is the severity of CVE-2021-47278?
CVE-2021-47278 has been classified with a severity rating that reflects its potential impact on system integrity.
How do I fix CVE-2021-47278?
To fix CVE-2021-47278, update the Linux kernel to a version newer than 5.12.11 or any of the 5.13 release candidates.
What systems are affected by CVE-2021-47278?
CVE-2021-47278 affects specific versions of the Linux kernel, including versions up to 5.12.11 and all 5.13 release candidates.
Is CVE-2021-47278 a remote exploit?
CVE-2021-47278 is not categorized as a remote exploit but can lead to local privilege escalation under certain conditions.
What are the potential impacts of CVE-2021-47278?
The potential impacts of CVE-2021-47278 include system instability and possible unauthorized actions due to a use-after-free vulnerability.