First published: Wed Nov 25 2020(Updated: )
A flaw use after free in the Linux kernel infiniband hfi1 driver was found in the way user calls Ioctl after open dev file and fork. A local user could use this flaw to crash the system.
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 |
Linux Infiniband Hfi1 Driver | <=5.9 | |
Linux Infiniband Hfi1 Driver | =5.10-rc1 | |
Linux Infiniband Hfi1 Driver | =5.10-rc2 | |
Linux Infiniband Hfi1 Driver | =5.10-rc3 | |
Linux Infiniband Hfi1 Driver | =5.10-rc4 | |
Linux Infiniband Hfi1 Driver | =5.10-rc5 | |
redhat/Linux kernel | <5.10 | 5.10 |
debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
To mitigate this issue, prevent the module hfi1 from being loaded. Please see https://access.redhat.com/solutions/41278 for information on how to denylist a kernel module to prevent it from loading automatically.
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