CVE-2020-11935 (GCVE-0-2020-11935)

Vulnerability from cvelistv5 – Published: 2023-04-07 00:00 – Updated: 2024-08-04 11:42
VLAI?
Summary
It was discovered that aufs improperly managed inode reference counts in the vfsub_dentry_open() method. A local attacker could use this vulnerability to cause a denial of service attack.
Severity ?
4.4 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-911 - Improper Update of Reference Count
Assigner
References
Impacted products
Vendor Product Version
Ubuntu Linux kernel (aufs filesystem module) Unaffected: 4.4.0-186.216 , < 4.4* (custom)
Unaffected: 4.15.0-112.113 , < 4.15* (custom)
Unaffected: 5.4.0-42.46 , < 5.4* (custom)
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Credits
Mauricio Faria de Oliveira discovered that the aufs implementation in the Linux kernel improperly managed inode reference counts in the vfsub_dentry_open() method. A local attacker could use this vulnerability to cause a denial of service.
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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