An information disclosure vulnerability exists in the ARM SIGPAGE functionality of Linux Kernel. A userland application can read the contents of the sigpage (A page in which signal handler information is stored), which can leak kernel memory contents. A local attacker can read a process’s memory at a specific offset to read this information leak.
Created kernel tracking bugs for this issue:
Affects: fedora-all [bug 1981951]
This was fixed for Fedora with the 5.10.17 stable kernel updates.
This issue has been addressed in the following products:
Red Hat Enterprise Linux 8
Via RHSA-2022:1988 https://access.redhat.com/errata/RHSA-2022:1988
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):