CVE-2021-3492 (GCVE-0-2021-3492)

Vulnerability from cvelistv5 – Published: 2021-04-17 04:20 – Updated: 2024-09-17 03:54
VLAI?
Title
Ubuntu linux kernel shiftfs file system double free vulnerability
Summary
Shiftfs, an out-of-tree stacking file system included in Ubuntu Linux kernels, did not properly handle faults occurring during copy_from_user() correctly. These could lead to either a double-free situation or memory not being freed at all. An attacker could use this to cause a denial of service (kernel memory exhaustion) or gain privileges via executing arbitrary code. AKA ZDI-CAN-13562.
Severity ?
8.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE
  • CWE-415 - Double Free
  • CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
Impacted products
Vendor Product Version
Ubuntu Linux kernel Affected: 5.8 kernel , < 5.8.0-50.56 (custom)
Affected: 5.4 kernel , < 5.4.0-72.80 (custom)
Create a notification for this product.
Credits
Vincent Dehors of Synactiv Digital Security
Show details on NVD website
To clipboard 

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