CVE-2021-47401
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…
Does this matter?
Lower severity and a low EPSS score (0.25%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.25% probability · 16th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-668
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
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
- https://git.kernel.org/stable/c/acb96e782bad427ca4bb1bd94af660acd1462380Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.