CVE-2020-29661

CWE-416 — Use After FreeCWE-667CWE-82518 documents10 sources
Severity
7.8HIGH
EPSS
0.3%
top 48.37%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Linux Linux KernelOracle Tekelec Platform DistributionDebian Debian Linux+1 more
Timeline
PublishedDec 9
Latest updateMay 24

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.

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 Packages5 packages

▶Android:linux_kernel::0 — :2021-05-05
▶NVDlinux/linux_kernel2.6.26 — 4.4.248+5
▶Debianlinux< 5.9.15-1+3
▶Ubuntulinux< 3.13.0-188.239

Also affects: Debian Linux 10.0, 9.0, Fedora 32, 33

Patches

Patch: www.openwall.com ↗Patch: git.kernel.org ↗Patch: www.oracle.com ↗

🔴Vulnerability Details

5
GHSA
GHSA-p865-45gc-8x47: A locking issue was discovered in the tty subsystem of the Linux kernel through 5↗2022-05-24
▶
OSV
linux vulnerabilities↗2021-11-09
▶
OSV
CVE-2020-29661: In tiocspgrp of tty_jobctrl↗2021-05-01
▶
OSV
CVE-2020-29661: A locking issue was discovered in the tty subsystem of the Linux kernel through 5↗2020-12-09
▶
CVEList
CVE-2020-29661: A locking issue was discovered in the tty subsystem of the Linux kernel through 5↗2020-12-09
▶

📋Vendor Advisories

12
Ubuntu
Kernel Live Patch Security Notice↗2021-11-11
▶
Ubuntu
Linux kernel vulnerabilities↗2021-11-09
▶
Oracle
Oracle Oracle Communications Risk Matrix: Storage Management (Kernel) — CVE-2020-29661↗2021-10-15
▶
Android
CVE-2020-29661: TTY↗2021-05-01
▶
Ubuntu
Linux kernel vulnerabilities↗2021-02-25
▶