CVE-2021-34866 (GCVE-0-2021-34866)

Vulnerability from cvelistv5 – Published: 2022-01-25 15:30 – Updated: 2024-08-04 00:26
VLAI?
Summary
This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel 5.14-rc3. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of eBPF programs. The issue results from the lack of proper validation of user-supplied eBPF programs, which can result in a type confusion condition. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel. Was ZDI-CAN-14689.
Severity ?
8.8 (High)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE
  • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
zdi
References
Impacted products
Vendor Product Version
Linux Kernel Affected: 5.14-rc3
Create a notification for this product.
Credits
Ryota Shiga(@Ga_ryo_) of Flatt Security
Show details on NVD website
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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