MGASA-2018-0263 Updated kernel packages fix security vulnerabilities

This kernel update is based on the upstream 4.14.44 and fixes at least the following security issues: By mmaping a FUSE-backed file onto a process's memory containing command line arguments or environment strings, an attacker can cause utilities from psutils or procps such as ps, w or any other...

Updated kernel-tmb packages fix security vulnerabilities

This kernel-tmb update is based on the upstream 4.14.44 and fixes at least the following security issues: This update adds KPTI mitigation for Meltdown CVE-2017-5754 on 32bit x86. The netfilter subsystem in the Linux kernel through 4.15.7 mishandles the case of a rule blob that contains a jump bu...

x86: Incorrect handling of IST settings during CPU hotplug

ISSUE DESCRIPTION The x86-64 architecture allows interrupts to be run on distinct stacks. The choice of stack is encoded in a field of the corresponding interrupt descriptor in the Interrupt Descriptor Table IDT. That field selects an entry from the active Task State Segment TSS. Since, on AMD...

FreeBSD : xen-kernel -- x86 null segments not always treated as unusable (50ac2e96-ba4d-11e6-ae1b-002590263bf5)

The Xen Project reports : The Xen x86 emulator erroneously failed to consider the unusability of segments when performing memory accesses. The intended behaviour is as follows: The user data segment %ds, %es, %fs and %gs selectors may be NULL in 32-bit to prevent access. In 64-bit, NULL has a...

xen-kernel -- x86 null segments not always treated as unusable

The Xen Project reports: The Xen x86 emulator erroneously failed to consider the unusability of segments when performing memory accesses. The intended behaviour is as follows: The user data segment %ds, %es, %fs and %gs selectors may be NULL in 32-bit to prevent access. In 64-bit, NULL has a...