Riskcovery

CVE-2021-47401

ipack: ipoctal: fix stack information leak

State
Published
Severity
7.1 High
Published
May 21, 2024
Updated
Aug 5, 2026
Reserved
May 21, 2024

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.17.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • ba4dc61fe8c545a5d6a68b63616776556b771f51 to before acb96e782bad427ca4bb1bd94af660acd1462380Affected
  • ba4dc61fe8c545a5d6a68b63616776556b771f51 to before 741ea2670e021350e54f491106bdaa22dc50e6a0Affected
  • ba4dc61fe8c545a5d6a68b63616776556b771f51 to before 2725925982dc96a78069cd118ea3d66759bfdad7Affected
  • ba4dc61fe8c545a5d6a68b63616776556b771f51 to before 829f13d6079cf7a2465522f39acb43033e9b320dAffected
  • ba4dc61fe8c545a5d6a68b63616776556b771f51 to before 8657158a3b68c85234e6da3d8eae33d6183588b7Affected
  • ba4dc61fe8c545a5d6a68b63616776556b771f51 to before 5f6a309a699675680df15d9b6d389114515b4426Affected
  • ba4dc61fe8c545a5d6a68b63616776556b771f51 to before 0a9c36a2e06a249acbed64e8e0b84637c2ad7575Affected
  • ba4dc61fe8c545a5d6a68b63616776556b771f51 to before a89936cce87d60766a75732a9e7e25c51164f47cAffected
LinuxLinux
  • 3.5Affected
  • before 3.5Not affected
  • 4.4.286 through 4.4.*Not affected
  • 4.9.285 through 4.9.*Not affected
  • 4.14.249 through 4.14.*Not affected
  • 4.19.209 through 4.19.*Not affected
  • 5.4.151 through 5.4.*Not affected
  • 5.10.71 through 5.10.*Not affected
  • 5.14.10 through 5.14.*Not affected
  • 5.15 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.