CVE-2021-47122: net: caif: fix memory leak in caif_device_notify
First published: Fri Mar 15 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: net: caif: fix memory leak in caif_device_notify In case of caif_enroll_dev() fail, allocated link_support won't be assigned to the corresponding structure. So simply free allocated pointer in case of error
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=3.3<4.4.272 | |
| Linux Kernel | >=4.5<4.9.272 | |
| Linux Kernel | >=4.10<4.14.236 | |
| Linux Kernel | >=4.15<4.19.194 | |
| Linux Kernel | >=4.20<5.4.125 | |
| Linux Kernel | >=5.5<5.10.43 | |
| Linux Kernel | >=5.11<5.12.10 | |
| Linux Kernel | =5.13-rc1 | |
| Linux Kernel | =5.13-rc2 | |
| Linux Kernel | =5.13-rc3 | |
| Linux Kernel | =5.13-rc4 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.20-1 6.12.21-1 |
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/b042e2b2039565eb8f0eb51c14fbe1ef463c8cd8
- https://git.kernel.org/stable/c/9348c1f10932f13b299cbc8b1bd5f780751fae49
- https://git.kernel.org/stable/c/4bca2034b41c15b62d47a19158bb76235fd4455d
- https://git.kernel.org/stable/c/3be863c11cab725add9fef4237ed4e232c3fc3bb
- https://git.kernel.org/stable/c/f52f4fd67264c70cd0b4ba326962ebe12d9cba94
- https://git.kernel.org/stable/c/af2806345a37313f01b1c9f15e046745b8ee2daa
- https://git.kernel.org/stable/c/6a0e317f61094d377335547e015dd2ff12caf893
- https://git.kernel.org/stable/c/b53558a950a89824938e9811eddfc8efcd94e1bb
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-47122
- https://nvd.nist.gov/vuln/detail/CVE-2021-47122
- https://launchpad.net/bugs/cve/CVE-2021-47122
- https://security-tracker.debian.org/tracker/CVE-2021-47122
- https://ubuntu.com/security/CVE-2021-47122
- https://git.kernel.org/linus/b53558a950a89824938e9811eddfc8efcd94e1bb
Frequently Asked Questions
What is the severity of CVE-2021-47122?
CVE-2021-47122 is classified as a medium severity vulnerability.
How do I fix CVE-2021-47122?
To fix CVE-2021-47122, update your Linux kernel to a version later than those affected, specifically above 5.13-rc4.
What is the impact of CVE-2021-47122?
The impact of CVE-2021-47122 is a potential memory leak in the Linux kernel within the CAIF subsystem.
Which versions of Linux are affected by CVE-2021-47122?
CVE-2021-47122 affects multiple versions of the Linux kernel, specifically from 3.3 up to 5.13-rc4.
What component of the Linux kernel is affected by CVE-2021-47122?
CVE-2021-47122 affects the CAIF (Carrier Aggregation on Internet First) subsystem within the Linux kernel.
- agent/title
- agent/type
- agent/first-publish-date
- agent/author
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/weakness
- agent/severity
- agent/remedy
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- collector/usn-cve
- source/Ubuntu
- collector/launchpad-cve
- source/Launchpad
- collector/nvd-cve
- agent/references
- collector/security-tracker-debian
- source/Debian
- agent/source
- agent/softwarecombine
- agent/tags
- agent/description
- agent/event
- vendor/linux
- canonical/linux kernel
- version/linux kernel/3.3
- 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/5.13-rc1
- version/linux kernel/5.13-rc2
- version/linux kernel/5.13-rc3
- version/linux kernel/5.13-rc4
- package-manager/debian