CVE-2020-29661high
Description
A locking issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_jobctrl.c allows a use-after-free attack against TIOCSPGRP, aka CID-54ffccbf053b.
References
http://www.openwall.com/lists/oss-security/2020/12/10/1
http://packetstormsecurity.com/files/160681/Linux-TIOCSPGRP-Broken-Locking.html
https://security.netapp.com/advisory/ntap-20210122-0001/
https://www.debian.org/security/2021/dsa-4843
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
https://www.oracle.com/security-alerts/cpuoct2021.html
http://packetstormsecurity.com/files/164950/Kernel-Live-Patch-Security-Notice-LSN-0082-1.html
Details
Source: MITRE
Published: 2020-12-09
Updated: 2023-01-17
Type: CWE-416
Risk Information
CVSS v2
Base Score: 7.2
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Impact Score: 10
Exploitability Score: 3.9
Severity: HIGH
CVSS v3
Base Score: 7.8
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 1.8
Severity: HIGH