DescriptionA flaw was found in the crypto subsystem of the Linux kernel before version kernel-4.15-rc4. The "null skcipher" was being dropped when each af_alg_ctx was freed instead of when the aead_tfm was freed. This can cause the null skcipher to be freed while it is still in use leading to a local user being able to crash the system or possibly escalate privileges.
Overall state of this security issue: Does not affect SUSE products
This issue is currently rated as having moderate severity.SUSE Bugzilla entry: 1106174 [RESOLVED / UPSTREAM] No SUSE Security Announcements cross referenced.
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.
|SUSE Linux Enterprise Desktop 12 SP3||kernel-source||Not affected|
|SUSE Linux Enterprise Module for Basesystem 15 GA||kernel-source||Not affected|
|SUSE Linux Enterprise Module for Development Tools 15 GA||kernel-source||Not affected|
|SUSE Linux Enterprise Server 11 SP4||kernel-source||Not affected|
|SUSE Linux Enterprise Server 12 SP3||kernel-source||Not affected|