A vulnerability has been found in Linux Kernel. Affected by this issue is the function del_timer of the file drivers/isdn/mISDN/l1oip_core.c of the ISDN (for the ISDN over IP tunnel). The manipulation leads to use after free. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-211088.
Created kernel tracking bugs for this issue:
Affects: fedora-all [bug 2150954]
While ISDN is disabled in Fedora kernels, a patch for this was included in 6.0.3 for users who might be building their own kernels.
This issue has been addressed in the following products:
Red Hat Enterprise Linux 9
Via RHSA-2023:6583 https://access.redhat.com/errata/RHSA-2023:6583