PT-2020-4832 · Linux+2 · Linux Kernel+2
Published
2020-10-08
·
Updated
2025-09-29
·
CVE-2020-27194
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions:
Linux kernel versions prior to 5.8.15
Description:
An issue in the Linux kernel is related to the
scalar32 min max or function in kernel/bpf/verifier.c, which mishandles bounds tracking during the use of 64-bit values. This can lead to a buffer overflow in memory, potentially allowing an attacker to cause a denial of service. There have been reports of local privilege escalation (LPE) exploits, indicating that this issue has been exploited in real-world attacks.Recommendations:
For Linux kernel versions prior to 5.8.15, update to version 5.8.15 or later to resolve the issue.
As a temporary workaround, consider restricting the use of the
scalar32 min max or function in kernel/bpf/verifier.c until a patch is available.Exploit
Fix
Buffer Overflow
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Related Identifiers
Affected Products
Alt Linux
Linux Kernel
Ubuntu