CVE-2020-27830

MEDIUM5.5

A vulnerability was found in Linux Kernel where in the spk_ttyio_receive_buf2() function, it would dereference spk_ttyio_synth without checking whether it is NULL or not, and may lead to a NULL-ptr deref crash

Published May 13, 2021

Modified 1 years ago

Details

A vulnerability was found in Linux Kernel where in the spk_ttyio_receive_buf2() function, it would dereference spk_ttyio_synth without checking whether it is NULL or not, and may lead to a NULL-ptr deref crash.

References

WEBhttp://www.openwall.com/lists/oss-security/2020/12/08/1 WEBhttp://www.openwall.com/lists/oss-security/2020/12/08/4 WEBhttps://bugzilla.redhat.com/show_bug.cgi?id=1919900 WEBhttps://lists.debian.org/debian-lts-announce/2021/02/msg00018.html WEBhttps://security.netapp.com/advisory/ntap-20210625-0004/ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2020-27830 ADVISORYhttps://www.debian.org/security/2021/dsa-4843

CVSS Analysis

CVSS v3.1

5.5

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

NoneC:N

Integrity

NoneI:N

Availability

HighA:H

5.5/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

Memory Safety

CWE-476

NULL Pointer Dereference

Ecosystems

Timeline

PublishedMay 13, 2021

ModifiedAug 4, 2024