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CVE-2020-29661

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2021-0354-01
Posted Feb 2, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0354-01 - The kernel-alt packages provide the Linux kernel version 4.x. Issues addressed include a use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2020-15436, CVE-2020-1749, CVE-2020-29661
SHA-256 | 61fd5b2885db736fff66a1fa2e6b36667dab7cdf7afd0f360c7b88a7f36ab487
Linux TIOCSPGRP Broken Locking
Posted Dec 22, 2020
Authored by Jann Horn, Google Security Research

Linux suffers from broken locking in TIOCSPGRP that can lead to a corrupted refcount.

tags | exploit
systems | linux
advisories | CVE-2020-29661
SHA-256 | 3d16d56ff43c2ab3355f19116f22e1a94fc89347899d1d2c15556ab0e4b4191b
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