CVE-2021-20219
Description
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.
Risk Information
Base Score
5.5
MODERATE
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score
Exploitation Probability
0.052
Associated Vulnerability
| Vulnerability | OS Platform |
|---|---|
| SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-4.12.14-122.66.2.x86_64.rpm | Linux |
| SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-base-4.12.14-122.66.2.x86_64.rpm | Linux |
| SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-base-debuginfo-4.12.14-122.66.2.x86_64.rpm | Linux |
| SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-debuginfo-4.12.14-122.66.2.x86_64.rpm | Linux |
| SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-debugsource-4.12.14-122.66.2.x86_64.rpm | Linux |
| SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-devel-4.12.14-122.66.2.x86_64.rpm | Linux |
| SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-devel-debuginfo-4.12.14-122.66.2.x86_64.rpm | Linux |
| SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-devel-4.12.14-122.66.2.noarch.rpm | Linux |
| SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-macros-4.12.14-122.66.2.noarch.rpm | Linux |
| SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-source-4.12.14-122.66.2.noarch.rpm | Linux |
| SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-syms-4.12.14-122.66.2.x86_64.rpm | Linux |
| SUSE-SU-2021:1248-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-4.12.14-16.53.1.x86_64.rpm | Linux |
| SUSE-SU-2021:1248-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-base-4.12.14-16.53.1.x86_64.rpm | Linux |
| SUSE-SU-2021:1248-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-base-debuginfo-4.12.14-16.53.1.x86_64.rpm | Linux |
| SUSE-SU-2021:1248-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-debuginfo-4.12.14-16.53.1.x86_64.rpm | Linux |
| SUSE-SU-2021:1248-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-debugsource-4.12.14-16.53.1.x86_64.rpm | Linux |
| SUSE-SU-2021:1248-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-devel-4.12.14-16.53.1.x86_64.rpm | Linux |
| SUSE-SU-2021:1248-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-devel-azure-4.12.14-16.53.1.noarch.rpm | Linux |
| SUSE-SU-2021:1248-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-source-azure-4.12.14-16.53.1.noarch.rpm | Linux |
| SUSE-SU-2021:1248-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-syms-azure-4.12.14-16.53.1.x86_64.rpm | Linux |
| Kernel-uek update (ELSA-2021-9215) kernel-uek-4.1.12-124.50.2.el7uek.x86_64.rpm | Linux |
| Kernel-uek-debug update (ELSA-2021-9215) kernel-uek-debug-4.1.12-124.50.2.el7uek.x86_64.rpm | Linux |
| Kernel-uek-debug-devel update (ELSA-2021-9215) kernel-uek-debug-devel-4.1.12-124.50.2.el7uek.x86_64.rpm | Linux |
| Kernel-uek-devel update (ELSA-2021-9215) kernel-uek-devel-4.1.12-124.50.2.el7uek.x86_64.rpm | Linux |
| Kernel-uek-doc update (ELSA-2021-9215) kernel-uek-doc-4.1.12-124.50.2.el7uek.noarch.rpm | Linux |
| Kernel-uek-firmware update (ELSA-2021-9215) kernel-uek-firmware-4.1.12-124.50.2.el7uek.noarch.rpm | Linux |
Patch Details
No records foundReferences
https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234