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.
CvssV3 impact
BaseSeverity | MEDIUM |
ConfidentialityImpact | NONE |
AttackComplexity | LOW |
Scope | UNCHANGED |
AttackVector | LOCAL |
AvailabilityImpact | HIGH |
IntegrityImpact | NONE |
PrivilegesRequired | LOW |
BaseScore | 5.5 |
VectorString | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Version | 3.1 |
UserInteraction | NONE |
CvssV2 impact
AccessComplexity | LOW |
ConfidentialityImpact | NONE |
AvailabilityImpact | PARTIAL |
IntegrityImpact | NONE |
BaseScore | 2.1 |
VectorString | AV:L/AC:L/Au:N/C:N/I:N/A:P |
Version | 2.0 |
AccessVector | LOCAL |
Authentication | NONE |