CVE-2021-47184: i40e: Fix NULL ptr dereference on VSI filter sync
First published: Wed Apr 10 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: i40e: Fix NULL ptr dereference on VSI filter sync Remove the reason of null pointer dereference in sync VSI filters. Added new I40E_VSI_RELEASING flag to signalize deleting and releasing of VSI resources to sync this thread with sync filters subtask. Without this patch it is possible to start update the VSI filter list after VSI is removed, that's causing a kernel oops.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=3.12<4.14.256 | |
| Linux Kernel | >=4.15<4.19.218 | |
| Linux Kernel | >=4.20<5.4.162 | |
| Linux Kernel | >=5.5<5.10.82 | |
| Linux Kernel | >=5.11<5.15.5 | |
| Linux Kernel | =5.16-rc1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://git.kernel.org/stable/c/78f2a9e831f9610e3655a0be5e675e1aa2472089
- https://git.kernel.org/stable/c/87c421ab4a43433cb009fea44bbbc77f46913e1d
- https://git.kernel.org/stable/c/c30162da91327e4cdf7cd03079f096bb3654738c
- https://git.kernel.org/stable/c/f866513ead4370402428ef724b03c3312295c178
- https://git.kernel.org/stable/c/e91e8427a1e1633a0261e3bb0201c836ac5b3890
- https://git.kernel.org/stable/c/37d9e304acd903a445df8208b8a13d707902dea6
Frequently Asked Questions
What is the severity of CVE-2021-47184?
CVE-2021-47184 is classified as a medium severity vulnerability affecting the Linux kernel.
How do I fix CVE-2021-47184?
To fix CVE-2021-47184, update the Linux kernel to a patched version that addresses the null pointer dereference.
What versions of the Linux kernel are affected by CVE-2021-47184?
CVE-2021-47184 affects multiple Linux kernel versions ranging from 3.12 up to 5.16-rc1.
What impact does CVE-2021-47184 have on system security?
CVE-2021-47184 can lead to a denial of service condition due to null pointer dereferences in the i40e driver.
Is CVE-2021-47184 exploitable remotely?
CVE-2021-47184 is not considered easily exploitable remotely but can impact systems with specific configurations.
- agent/references
- agent/weakness
- agent/description
- agent/first-publish-date
- agent/title
- agent/type
- agent/author
- agent/event
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/last-modified-date
- agent/remedy
- agent/softwarecombine
- agent/source
- agent/tags
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/linux
- canonical/linux kernel
- version/linux kernel/3.12
- version/linux kernel/4.15
- version/linux kernel/4.20
- version/linux kernel/5.5
- version/linux kernel/5.11
- version/linux kernel/5.16-rc1