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Test your applicationsUpgrade SLES:15.3
kernel-preempt
to version 5.3.18-150300.59.106.1 or higher.
Note: Versions mentioned in the description apply only to the upstream kernel-preempt
package and not the kernel-preempt
package as distributed by SLES
.
See How to fix?
for SLES:15.3
relevant fixed versions and status.
A flaw was found in the Linux kernel's Layer 2 Tunneling Protocol (L2TP). A missing lock when clearing sk_user_data can lead to a race condition and NULL pointer dereference. A local user could use this flaw to potentially crash the system causing a denial of service.