First published: Sat Jan 09 2021(Updated: )
A remote denial of service vulnerability was found in the Linux kernel’s TIPC kernel module. The while loop in tipc_link_xmit() hits an unknown state while attempting to parse SKBs, which are not in the queue. Sending two small UDP packets to a system with a UDP bearer results in the CPU utilization for the system to instantly spike to 100%, causing a denial of service condition.
Credit: secalert@redhat.com secalert@redhat.com
Affected Software | Affected Version | How to fix |
---|---|---|
redhat/kernel-rt | <0:4.18.0-305.rt7.72.el8 | 0:4.18.0-305.rt7.72.el8 |
redhat/kernel | <0:4.18.0-305.el8 | 0:4.18.0-305.el8 |
redhat/kernel | <0:4.18.0-147.83.1.el8_1 | 0:4.18.0-147.83.1.el8_1 |
redhat/kernel | <0:4.18.0-193.109.1.el8_2 | 0:4.18.0-193.109.1.el8_2 |
redhat/kernel-rt | <0:4.18.0-193.109.1.rt13.160.el8_2 | 0:4.18.0-193.109.1.rt13.160.el8_2 |
Linux Linux kernel | >=4.3<4.9.253 | |
Linux Linux kernel | >=4.10<4.14.217 | |
Linux Linux kernel | >=4.15<4.19.170 | |
Linux Linux kernel | >=4.20<5.4.92 | |
Linux Linux kernel | >=5.5<5.10.10 | |
Linux Linux kernel | =5.11-rc1 | |
Linux Linux kernel | =5.11-rc2 | |
Linux Linux kernel | =5.11-rc3 | |
redhat/kernel | <5.11 | 5.11 |
debian/linux | 5.10.223-1 5.10.226-1 6.1.106-3 6.1.112-1 6.10.11-1 6.11.2-1 |
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(Appears in the following advisories)