Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ipack: ipoctal: fix stack information leak The tty driver name is used also after registering the driver and must specifically not be allocated on the stack to avoid leaking information to user space (or triggering an oops). Drivers should not try to encode topology information in the tty device name but this one snuck in through staging without anyone noticing and another driver has since copied this malpractice. Fixing the ABI is a separate issue, but this at least plugs the security hole.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.5, < 4.4.286 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/0a9c36a2e06a249acbed64e8e0b84637c2ad7575Patch
- https://git.kernel.org/stable/c/2725925982dc96a78069cd118ea3d66759bfdad7Patch
- https://git.kernel.org/stable/c/5f6a309a699675680df15d9b6d389114515b4426Patch
- https://git.kernel.org/stable/c/741ea2670e021350e54f491106bdaa22dc50e6a0Patch
- https://git.kernel.org/stable/c/829f13d6079cf7a2465522f39acb43033e9b320dPatch
- https://git.kernel.org/stable/c/8657158a3b68c85234e6da3d8eae33d6183588b7Patch
- https://git.kernel.org/stable/c/a89936cce87d60766a75732a9e7e25c51164f47cPatch
- https://git.kernel.org/stable/c/acb96e782bad427ca4bb1bd94af660acd1462380Patch
- https://git.kernel.org/stable/c/0a9c36a2e06a249acbed64e8e0b84637c2ad7575Patch
- https://git.kernel.org/stable/c/2725925982dc96a78069cd118ea3d66759bfdad7Patch
- https://git.kernel.org/stable/c/5f6a309a699675680df15d9b6d389114515b4426Patch
- https://git.kernel.org/stable/c/741ea2670e021350e54f491106bdaa22dc50e6a0Patch
- https://git.kernel.org/stable/c/829f13d6079cf7a2465522f39acb43033e9b320dPatch
- https://git.kernel.org/stable/c/8657158a3b68c85234e6da3d8eae33d6183588b7Patch
- https://git.kernel.org/stable/c/a89936cce87d60766a75732a9e7e25c51164f47cPatch
FAQ
What is CVE-2021-47401?
CVE-2021-47401 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: ipack: ipoctal: fix stack information leak The tty driver name is used also after registering the driver and must specifically not...
How severe is CVE-2021-47401?
CVE-2021-47401 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-47401?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.