DEBIAN-CVE-2020-25603

An issue was discovered in Xen through 4.14.x. There are missing memory barriers when accessing/allocating an event channel. Event channels control structures can be accessed lockless as long as the port is considered to be valid. Such a sequence is missing an appropriate memory barrier e.g., smp...

CVE-2020-25603

An issue was discovered in Xen through 4.14.x. There are missing memory barriers when accessing/allocating an event channel. Event channels control structures can be accessed lockless as long as the port is considered to be valid. Such a sequence is missing an appropriate memory barrier e.g., smp...

ALPINE-CVE-2020-25603

An issue was discovered in Xen through 4.14.x. There are missing memory barriers when accessing/allocating an event channel. Event channels control structures can be accessed lockless as long as the port is considered to be valid. Such a sequence is missing an appropriate memory barrier e.g., smp...

Privilege escalation

An issue was discovered in Xen through 4.14.x. There are missing memory barriers when accessing/allocating an event channel. Event channels control structures can be accessed lockless as long as the port is considered to be valid. Such a sequence is missing an appropriate memory barrier e.g., smp...

UBUNTU-CVE-2020-25603

An issue was discovered in Xen through 4.14.x. There are missing memory barriers when accessing/allocating an event channel. Event channels control structures can be accessed lockless as long as the port is considered to be valid. Such a sequence is missing an appropriate memory barrier e.g., smp...

CVE-2020-25603

An issue was discovered in Xen through 4.14.x. There are missing memory barriers when accessing/allocating an event channel. Event channels control structures can be accessed lockless as long as the port is considered to be valid. Such a sequence is missing an appropriate memory barrier e.g., smp...

CVE-2020-25603

CVE-2020-25603 affects Xen up to 4.14.x, where missing memory barriers in event-channel access/allocation allow lockless manipulation of event-channel state. A malicious guest could crash the hypervisor, causing a Denial of Service, with potential information leaks or privilege escalation. Public...

Missing memory barriers when accessing/allocating an event channel

ISSUE DESCRIPTION Event channels control structures can be accessed lockless as long as the port is considered to be valid. Such sequence is missing appropriate memory barrier e.g smpmb to prevent both the compiler and CPU to re-order access. IMPACT A malicious guest may be able to cause a...

DEBIAN-CVE-2020-24371

lgc.c in Lua 5.4.0 mishandles the interaction between barriers and the sweep phase, leading to a memory access violation involving collectgarbage...

CVE-2020-24371

lgc.c in Lua 5.4.0 mishandles the interaction between barriers and the sweep phase, leading to a memory access violation involving collectgarbage...

SUSE SLES12 Security Update : xen (SUSE-SU-2020:2234-1)

This update for xen fixes the following issues : bsc1174543 - secure boot related fixes bsc1163019 - CVE-2020-8608: Potential OOB access due to unsafe snprintf usages bsc1169392 - CVE-2020-11742: Bad continuation handling in GNTTABOPcopy bsc1168140 - CVE-2020-11740, CVE-2020-11741: Multiple...

SUSE-SU-2020:2234-1 Security update for xen

This update for xen fixes the following issues: - bsc1174543 - secure boot related fixes - bsc1163019 - CVE-2020-8608: Potential OOB access due to unsafe snprintf usages - bsc1169392 - CVE-2020-11742: Bad continuation handling in GNTTABOPcopy - bsc1168140 - CVE-2020-11740, CVE-2020-11741: Multipl...

kernel: Rogue cross-process SSBD shutdown. Linux scheduler logical bug allows an attacker to turn off the SSBD protection.

A logic bug flaw was found in the Linux kernel’s implementation of SSBD. A bug in the logic handling allows an attacker with a local account to disable SSBD protection during a context switch when additional speculative execution mitigations are in place. This issue was introduced when the per...

SUSE SLES12 Security Update : xen (SUSE-SU-2020:1630-1)

This update for xen fixes the following issues : CVE-2020-0543: Fixed a side channel attack against special registers which could have resulted in leaking of read values to cores other than the one which called it. This attack is known as Special Register Buffer Data Sampling SRBDS or 'CrossTalk'...

SUSE-SU-2020:1630-1 Security update for xen

This update for xen fixes the following issues: - CVE-2020-0543: Fixed a side channel attack against special registers which could have resulted in leaking of read values to cores other than the one which called it. This attack is known as Special Register Buffer Data Sampling SRBDS or 'CrossTalk...

Fedora 30 : xen (2020-cbc3149753)

update to 4.11.4 ---- multiple xenoprof issues XSA-313, CVE-2020-11740, CVE-2020-11741 1823912, 1823914 Missing memory barriers in read-write unlock paths XSA-314, CVE-2020-11739 1823784 Bad error path in GNTTABOPmapgrant XSA-316, CVE-2020-11743 1823926 Bad continuation handling in GNTTABOPcopy...

openSUSE Security Update : xen (openSUSE-2020-599)

This update for xen fixes the following issues : Security issues fixed : - CVE-2020-11742: Bad continuation handling in GNTTABOPcopy bsc1169392. - CVE-2020-11740, CVE-2020-11741: xen: XSA-313 multiple xenoprof issues bsc1168140. - CVE-2020-11739: Missing memory barriers in read-write unlock paths...

Fedora 31 : xen (2020-295ed0b1e0)

multiple xenoprof issues XSA-313, CVE-2020-11740, CVE-2020-11741 1823912, 1823914 Missing memory barriers in read-write unlock paths XSA-314, CVE-2020-11739 1823784 Bad error path in GNTTABOPmapgrant XSA-316, CVE-2020-11743 1823926 Bad continuation handling in GNTTABOPcopy XSA-318, CVE-2020-11742...

Security update for xen (important)

openSUSE Security Update: Security update for xen Announcement ID: openSUSE-SU-2020:0599-1 Rating: important References: 1027519 1134506 1155200 1157490 1160932 1165206 1167007 1167152 1168140 1168142 1168143 1169392 Cross-References: CVE-2020-11739 CVE-2020-11740 CVE-2020-11741 CVE-2020-11742...

SUSE SLES12 Security Update : xen (SUSE-SU-2020:1139-1)

This update for xen to version 4.12.2 fixes the following issues : Security issues fixed : CVE-2020-11742: Bad continuation handling in GNTTABOPcopy bsc1169392. CVE-2020-11740, CVE-2020-11741: xen: XSA-313 multiple xenoprof issues bsc1168140. CVE-2020-11739: Missing memory barriers in read-write...