CVE-2020-14356 — NULL Pointer Dereference in Kernel

CWE-476 — NULL Pointer DereferenceCWE-416 — Use After Free15 documents9 sources
Severity
7.8HIGHNVD
EPSS
0.8%
top 26.52%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
Linux KernelCanonical Ubuntu LinuxDebian Linux+2 more
Timeline
PublishedAug 19
Latest updateMay 24

Description

A flaw null pointer dereference in the Linux kernel cgroupv2 subsystem in versions before 5.7.10 was found in the way when reboot the system. A local user could use this flaw to crash the system or escalate their privileges on the system.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages4 packages

▶NVDlinux/linux_kernel4.5 — 4.9.231+4
▶Debianlinux/linux_kernel< 5.7.10-1+3
▶CVEListV5linux/linux_kernelKernel versions before 5.7.10
▶NVDopensuse/leap15.1, 15.2+1

Also affects: Debian Linux 9.0, Ubuntu Linux 14.04, 16.04, 18.04, 20.04, Enterprise Linux 8.0

Patches

Patch: bugzilla.redhat.com ↗Patch: bugzilla.redhat.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-gm74-x573-mg64: A flaw null pointer dereference in the Linux kernel cgroupv2 subsystem in versions before 5↗2022-05-24
▶
OSV
CVE-2020-14356: A flaw null pointer dereference in the Linux kernel cgroupv2 subsystem in versions before 5↗2020-08-19
▶
CVEList
CVE-2020-14356: A flaw null pointer dereference in the Linux kernel cgroupv2 subsystem in versions before 5↗2020-08-19
▶

📋Vendor Advisories

7
Ubuntu
Linux kernel vulnerabilities↗2020-09-23
▶
Ubuntu
Linux kernel vulnerabilities↗2020-09-03
▶
Ubuntu
Linux kernel vulnerability↗2020-09-02
▶
Microsoft
A flaw null pointer dereference in the Linux kernel cgroupv2 subsystem in versions before 5.7.10 was found in the way when reboot the system. A local user could use this flaw to crash the system or es↗2020-08-11
▶
Red Hat
kernel: use-after-free because skcd->no_refcnt was not considered during the backport of CVE-2020-14356↗2020-07-22
▶

💬Community

4
Bugzilla
CVE-2020-25220 kernel: use-after-free because skcd->no_refcnt was not considered during the backport of CVE-2020-14356↗2020-09-10
▶
Bugzilla
CVE-2020-25220 kernel: use-after-free because skcd->no_refcnt was not considered during the backport of CVE-2020-14356 [fedora-all]↗2020-09-10
▶
Bugzilla
CVE-2020-14356 kernel: Use After Free vulnerability in cgroup BPF component↗2020-08-12
▶
Bugzilla
CVE-2020-14356 kernel: Use After Free vulnerability in cgroup BPF component [fedora-all]↗2020-08-12
▶
CVE-2020-14356 — NULL Pointer Dereference in Kernel | cvebase