An Improper Validation of Specified Type of Input vulnerability in the kernel of Juniper Networks Junos OS allows an unauthenticated adjacent attacker to trigger a Missing Release of Memory after Effective Lifetime vulnerability. Continued exploitation of this vulnerability will eventually lead to an FPC reboot and thereby a Denial of Service (DoS).

This issue affects:

Juniper Networks Junos OS on vMX and MX150:

• All versions prior to 19.2R1-S8, 19.2R3-S4;
• 19.3 versions prior to 19.3R3-S5;
• 19.4 versions prior to 19.4R2-S5, 19.4R3-S6;
• 20.1 versions prior to 20.1R3-S2;
• 20.2 versions prior to 20.2R3-S3;
• 20.3 versions prior to 20.3R3-S1;
• 20.4 versions prior to 20.4R3;
• 21.1 versions prior to 21.1R2-S1, 21.1R3;
• 21.2 versions prior to 21.2R1-S1, 21.2R2;
• 21.3 versions prior to 21.3R1-S1, 21.3R2.

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

This issue was seen during production usage.

This issue has been assigned  CVE-2022-22168 .

The following software releases have been updated to resolve this specific issue: 19.2R1-S8, 19.2R3-S4, 19.4R2-S5, 19.4R3-S6, 20.1R3-S2, 20.2R3-S3, 20.3R3-S1, 20.4R3, 21.1R2-S1, 21.1R3, 21.2R1-S1, 21.2R2, 21.2R3, 21.3R1-S1, 21.3R2, 21.4R1, and all subsequent releases.

This issue is being tracked as  1599158 .

There is no viable workaround for this issue.