CVE-2021-47310: net: ti: fix UAF in tlan_remove_one
First published: Tue May 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: net: ti: fix UAF in tlan_remove_one priv is netdev private data and it cannot be used after free_netdev() call. Using priv after free_netdev() can cause UAF bug. Fix it by moving free_netdev() at the end of the function.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <4.4.277 | 4.4.277 |
| redhat/kernel | <4.9.277 | 4.9.277 |
| redhat/kernel | <4.14.241 | 4.14.241 |
| redhat/kernel | <4.19.199 | 4.19.199 |
| redhat/kernel | <5.4.135 | 5.4.135 |
| redhat/kernel | <5.10.53 | 5.10.53 |
| redhat/kernel | <5.13.5 | 5.13.5 |
| redhat/kernel | <5.14 | 5.14 |
| Linux kernel | >=3.10<4.4.277 | |
| Linux kernel | >=4.5<4.9.277 | |
| Linux kernel | >=4.10<4.14.241 | |
| Linux kernel | >=4.15<4.19.199 | |
| Linux kernel | >=4.20<5.4.135 | |
| Linux kernel | >=5.5<5.10.53 | |
| Linux kernel | >=5.11<5.13.5 | |
| Linux kernel | =5.14-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/0336f8ffece62f882ab3012820965a786a983f70
- https://git.kernel.org/stable/c/0538b0ab7d2c396e385694228c7cdcd2d2c514e9
- https://git.kernel.org/stable/c/93efab0ef2a607fff9166d447c4035f98b5db342
- https://git.kernel.org/stable/c/a0a817b2d308fac090a05cbbe80988e073ac5193
- https://git.kernel.org/stable/c/a18a8d9cfbb112ad72e625372849adc3986fd6bf
- https://git.kernel.org/stable/c/b7e5563f2a7862a9e4796abb9908b092f677e3c1
- https://git.kernel.org/stable/c/c263ae8c7e4c482387de5e6c89e213f8173fe8b6
- https://git.kernel.org/stable/c/f2a062fcfe1d6f1b0a86fa76ae21c277d65f4405
- https://access.redhat.com/security/cve/CVE-2021-47310
- https://lore.kernel.org/linux-cve-announce/2024052128-CVE-2021-47310-a59d@gregkh/T
- https://access.redhat.com/errata/RHSA-2024:4211
- https://access.redhat.com/errata/RHSA-2024:4352
- https://access.redhat.com/errata/RHSA-2024:4447
- https://access.redhat.com/errata/RHSA-2024:4740
- https://bugzilla.redhat.com/show_bug.cgi?id=2282472
Frequently Asked Questions
What is the severity of CVE-2021-47310?
CVE-2021-47310 has a medium severity rating due to the potential for a use-after-free vulnerability in the Linux kernel.
How do I fix CVE-2021-47310?
To fix CVE-2021-47310, update to one of the patched kernel versions: 4.4.277, 4.9.277, 4.14.241, 4.19.199, 5.4.135, 5.10.53, 5.13.5, or 5.14.
What systems are affected by CVE-2021-47310?
CVE-2021-47310 affects multiple versions of the Linux kernel from version 3.10 up to 5.14-rc1.
Is CVE-2021-47310 exploitable remotely?
CVE-2021-47310's specific exploitation potential may vary, but it generally requires local access to the affected system.
What is a use-after-free vulnerability in CVE-2021-47310?
A use-after-free vulnerability like CVE-2021-47310 occurs when an application uses memory after it has been freed, potentially leading to arbitrary code execution.
- agent/title
- agent/type
- agent/first-publish-date
- agent/author
- agent/event
- agent/description
- agent/references
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2021-47310
- agent/software-canonical-lookup
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/severity
- agent/remedy
- agent/last-modified-date
- agent/softwarecombine
- agent/source
- agent/tags
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup-request
- package-manager/redhat
- vendor/linux
- canonical/linux kernel
- version/linux kernel/3.10
- version/linux kernel/4.5
- version/linux kernel/4.10
- version/linux kernel/4.15
- version/linux kernel/4.20
- version/linux kernel/5.5
- version/linux kernel/5.11
- version/linux kernel/5.14-rc1