CVE-2020-8648

HIGH
7.1
CVSS Score
Published: February 6, 2020 at 12:06 AM UTC
Updated: June 17, 2026 at 03:26 AM UTC
9 products affected across 6 vendorsLinux KernelDebian LinuxUbuntu Linux

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Severity
HIGH7.1
Exploit prediction
EPSS 0.7%

Description

There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the n_tty_receive_buf_common function in drivers/tty/n_tty.c.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

References (11)

Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
x_refsource_MISCExploitIssue TrackingVendor Advisory
https://bugzilla.kernel.org/show_bug.cgi?id=206361
Mailing Listx_refsource_MLISTThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
Mailing Listx_refsource_MLISTThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
Mailing Listx_refsource_MLISTThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
https://usn.ubuntu.com/4342-1/
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
https://usn.ubuntu.com/4344-1/

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-416

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