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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Oracle_linux | — | Upgrade kernel-uek | May 6, 2021 | May 26, 2018 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Mar 23, 2021 |
| Suse | — | Upgrade kernel-default-livepatchUpgrade kgraft-patch-4_4_180-94_144-defaultUpgrade dlm-kmp-defaultUpgrade ocfs2-kmp-defaultUpgrade kernel-livepatch-4_12_14-197_89-defaultUpgrade kernel-devel-azureUpgrade kernel-default-baseUpgrade kernel-macrosUpgrade kernel-default-livepatch-develUpgrade cluster-md-kmp-defaultUpgrade kernel-sourceUpgrade kernel-default-kgraftUpgrade kernel-symsUpgrade reiserfs-kmp-defaultUpgrade kernel-livepatch-4_12_14-150_72-defaultUpgrade kernel-default-extraUpgrade kernel-source-azureUpgrade kernel-azure-baseUpgrade kernel-develUpgrade kernel-default-develUpgrade kernel-azure-develUpgrade kernel-defaultUpgrade kernel-obs-buildUpgrade kernel-azureUpgrade kernel-syms-azureUpgrade kernel-default-manUpgrade kernel-docsUpgrade kernel-vanilla-baseUpgrade gfs2-kmp-default | Apr 16, 2021 | Mar 23, 2021 |
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