A locking issue was discovered in the tty subsystem of the Linux kernel in drivers/tty/tty_jobctrl.c which could allow an attacker with a local account to possibly corrupt memory or escalate privileges. Reference and upstream patch: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54ffccbf053b5b6ca4f6e45094b942fab92a25fc
Created kernel tracking bugs for this issue: Affects: fedora-all [bug 1906526]
Mitigation: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2021:0354 https://access.redhat.com/errata/RHSA-2021:0354
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2020-29661
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2021:0537 https://access.redhat.com/errata/RHSA-2021:0537
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2021:0558 https://access.redhat.com/errata/RHSA-2021:0558
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.1 Extended Update Support Via RHSA-2021:0686 https://access.redhat.com/errata/RHSA-2021:0686
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.1 Extended Update Support Via RHSA-2021:0689 https://access.redhat.com/errata/RHSA-2021:0689
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Extended Update Support Via RHSA-2021:0763 https://access.redhat.com/errata/RHSA-2021:0763
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Extended Update Support Via RHSA-2021:0774 https://access.redhat.com/errata/RHSA-2021:0774
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Extended Update Support Via RHSA-2021:0765 https://access.redhat.com/errata/RHSA-2021:0765
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2021:0856 https://access.redhat.com/errata/RHSA-2021:0856
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2021:0857 https://access.redhat.com/errata/RHSA-2021:0857
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2021:0862 https://access.redhat.com/errata/RHSA-2021:0862
This issue has been addressed in the following products: Red Hat Enterprise Linux 7.6 Extended Update Support Via RHSA-2021:0878 https://access.redhat.com/errata/RHSA-2021:0878
This issue has been addressed in the following products: Red Hat Enterprise Linux 7.6 Extended Update Support Via RHSA-2021:0940 https://access.redhat.com/errata/RHSA-2021:0940
This issue has been addressed in the following products: Red Hat Enterprise Linux 7.7 Extended Update Support Via RHSA-2021:1028 https://access.redhat.com/errata/RHSA-2021:1028
This issue has been addressed in the following products: Red Hat Enterprise Linux 7.7 Extended Update Support Via RHSA-2021:1031 https://access.redhat.com/errata/RHSA-2021:1031
This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Extended Lifecycle Support Via RHSA-2021:1288 https://access.redhat.com/errata/RHSA-2021:1288
This issue has been addressed in the following products: Red Hat Enterprise Linux 7.4 Advanced Update Support Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions Red Hat Enterprise Linux 7.4 Telco Extended Update Support Via RHSA-2021:2164 https://access.redhat.com/errata/RHSA-2021:2164