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CVE-2020-12656

CVSS v3.1 5.5 (Medium)
55% Progress
CVSS v2.0 2.1 (Low)
21% Progress
EPSS 0.04 % (15th)
0.04% Progress
Affected Products 3
Advisories 20
NVD Status Modified
Info CVSS EPSS Affected Configurations References Security Advisories Packages & Software OVAL Tools, Exploits & PoC Graph Web & Social Timeline

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

Weaknesses
CWE-401
Missing Release of Memory after Effective Lifetime
CVE Status
PUBLISHED
NVD Status
Modified
CNA
MITRE
Published Date
2020-05-05 06:15:11
(4 years ago)
Updated Date
2024-08-04 12:15:50
(6 weeks ago)

Affected Products

Canonical

Linux

Opensuse

Configuration #1

    CPE23 From Up To
  Linux Kernel 5.6.10 and prior versions cpe:2.3:o:linux:linux_kernel <= 5.6.10

Configuration #2

    CPE23 From Up To
  Canonical Ubuntu Linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm
  Canonical Ubuntu Linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm
  Canonical Ubuntu Linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts
  Canonical Ubuntu Linux 20.04 cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts

Configuration #3

    CPE23 From Up To
  Opensuse Leap 15.1 cpe:2.3:o:opensuse:leap:15.1
  Opensuse Leap 15.2 cpe:2.3:o:opensuse:leap:15.2