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Medium severity5.5NVD Advisory· Published May 5, 2020· Updated Jun 17, 2026

CVE-2020-12656

CVE-2020-12656

Description

gss_mech_free in net/sunrpc/auth_gss/gss_mech_switch.c in the rpcsec_gss_krb5 implementation in the Linux kernel through 5.6.10 lacks certain domain_release calls, leading to a memory leak. Note: This was disputed with the assertion that the issue does not grant any access not already available. It is a problem that on unloading a specific kernel module some memory is leaked, but loading kernel modules is a privileged operation. A user could also write a kernel module to consume any amount of memory they like and load that replicating the effect of this bug

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Affected products

186

Patches

Vulnerability mechanics

References

5

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