A denial of service vulnerability was found in n_tty_receive_char_special in drivers/tty/n_tty.c of the Linux kernel. In this flaw a local attacker with a normal user privilege could delay the loop (due to a changing ldata->read_head, and a missing sanity check) and cause a threat to the system availability.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Oracle_linux | — | oracle-linux-upgrade-kernel-uek | May 6, 2021 | May 26, 2018 |
| Redhat_linux | — | no-fix-redhat-rpm-package | Jul 9, 2025 | Mar 23, 2021 |
| Suse | — | suse-upgrade-cluster-md-kmp-defaultsuse-upgrade-dlm-kmp-defaultsuse-upgrade-gfs2-kmp-defaultsuse-upgrade-kernel-azuresuse-upgrade-kernel-azure-basesuse-upgrade-kernel-azure-develsuse-upgrade-kernel-defaultsuse-upgrade-kernel-default-basesuse-upgrade-kernel-default-develsuse-upgrade-kernel-default-extrasuse-upgrade-kernel-default-kgraftsuse-upgrade-kernel-default-livepatchsuse-upgrade-kernel-default-livepatch-develsuse-upgrade-kernel-default-mansuse-upgrade-kernel-develsuse-upgrade-kernel-devel-azuresuse-upgrade-kernel-docssuse-upgrade-kernel-livepatch-4_12_14-150_72-defaultsuse-upgrade-kernel-livepatch-4_12_14-197_89-defaultsuse-upgrade-kernel-macrossuse-upgrade-kernel-obs-buildsuse-upgrade-kernel-sourcesuse-upgrade-kernel-source-azuresuse-upgrade-kernel-symssuse-upgrade-kernel-syms-azuresuse-upgrade-kernel-vanilla-basesuse-upgrade-kgraft-patch-4_4_180-94_144-defaultsuse-upgrade-ocfs2-kmp-defaultsuse-upgrade-reiserfs-kmp-default | Apr 16, 2021 | Mar 23, 2021 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub