PT-2020-3071 · Linux+4 · Linux Kernel+4
Kircher
·
Published
2020-05-04
·
Updated
2024-08-04
·
CVE-2020-12656
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 through 5.6.10
Description
The issue is related to a memory leak in the Linux kernel's rpcsec gss krb5 implementation, specifically in the
gss mech free function. This leak occurs when unloading a specific kernel module, but it's noted that loading kernel modules is a privileged operation. The issue was disputed with the assertion that it does not grant any access not already available, as a user could also write a kernel module to consume any amount of memory and load it, replicating the effect of this bug.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Memory Leak
Missing Release of Resource after Effective Lifetime
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Related Identifiers
Affected Products
Alt Linux
Linuxmint
Linux Kernel
Suse
Ubuntu