Race Condition

Xen is vulnerable to Race Condition. The vulnerability is caused due to the two mitigations XSA-422 Branch Type Confusion and XSA-434 Speculative Return Stack Overflow not active because it was believed that the mitigations always operated in contexts with IRQs disabled due to original XSA-254 fi...

Xen: x86: BTC/SRSO Fixes Not Fully Effective (XSA-446)

The fixes for XSA-422 Branch Type Confusion and XSA-434 Speculative Return Stack Overflow are not IRQ-safe as it was believed that the mitigations were always operated in contexts with IRQs disabled. However due to an unanticipated interaction with XSA-254 Meltdown, a race condition exists whereb...

amd: Return Address Predictor vulnerability leading to information disclosure

A side channel vulnerability was found in hw amd. Some AMD CPUs may allow an attacker to influence the return address prediction. This issue may result in speculative execution at an attacker-controlled instruction pointer register, potentially leading to information disclosure...

RHEL 7 : linux-firmware (RHSA-2023:7513)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:7513 advisory. The linux-firmware packages contain all of the firmware files that are required by various devices to operate. Security Fixes: hw amd: Retur...

amd: Return Address Predictor vulnerability leading to information disclosure

A side channel vulnerability was found in hw amd. Some AMD CPUs may allow an attacker to influence the return address prediction. This issue may result in speculative execution at an attacker-controlled instruction pointer register, potentially leading to information disclosure...

kernel: AMD: Cross-Thread Return Address Predictions

A flaw was found in HW. When SMT is enabled, certain AMD processors may speculatively execute instructions using a target from the sibling thread after an SMT mode switch, potentially resulting in information disclosure...

Oracle Linux 8 : linux-firmware (ELSA-2023-7109)

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2023-7109 advisory. 20230516-999.27.git6c9e0ed5.el8 - Update firmware for qat4xxx devices Orabug: 35811008 Tenable has extracted the preceding description block directly from the...

RHEL 8 : linux-firmware (RHSA-2023:7401)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:7401 advisory. The linux-firmware packages contain all of the firmware files that are required by various devices to operate. Security Fixes: hw amd: Retur...

RHEL 9 : kernel (RHSA-2023:7370)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:7370 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: tun: bugs for oversize packet...

Oracle Linux 8 : kernel (ELSA-2023-7077)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2023-7077 advisory. - qfqchangeclass in net/sched/schqfq.c in the Linux kernel before 6.2.13 allows an out-of-bounds write because lmax can exceed QFQMINLMAX. CVE-2023-314...

SUSE CVE-2023-46836

The fixes for XSA-422 Branch Type Confusion and XSA-434 Speculative Return Stack Overflow are not IRQ-safe. It was believed that the mitigations always operated in contexts with IRQs disabled. However, the original XSA-254 fix for Meltdown XPTI deliberately left interrupts enabled on two entry...

SUSE SLED15 / SLES15 / openSUSE 15 Security Update : xen (SUSE-SU-2023:4475-1)

The remote openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:4475-1 advisory. - A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality. CVE-2023-20588 - arm3...

SUSE SLED15 / SLES15 / openSUSE 15 Security Update : xen (SUSE-SU-2023:4476-1)

The remote openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:4476-1 advisory. - A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality. CVE-2023-20588 - arm3...

amd: Return Address Predictor vulnerability leading to information disclosure

A side channel vulnerability was found in hw amd. Some AMD CPUs may allow an attacker to influence the return address prediction. This issue may result in speculative execution at an attacker-controlled instruction pointer register, potentially leading to information disclosure...

RHEL 7 : linux-firmware (RHSA-2023:7244)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:7244 advisory. The linux-firmware packages contain all of the firmware files that are required by various devices to operate. Security Fixes: hw amd: Retur...

amd: Return Address Predictor vulnerability leading to information disclosure

A side channel vulnerability was found in hw amd. Some AMD CPUs may allow an attacker to influence the return address prediction. This issue may result in speculative execution at an attacker-controlled instruction pointer register, potentially leading to information disclosure...

kernel: speculative pointer dereference in do_prlimit() in kernel/sys.c

A vulnerabilty was found in Linux Kernel, where a speculative pointer dereference problem exists in the Linux Kernel on the doprlimit function. The resource argument value is controlled and is used in pointer arithmetic for the 'rlim' variable and can be used to leak the contents...

Important: Red Hat Security Advisory: kernel security, bug fix, and enhancement update

An update for kernel is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

kernel: speculative pointer dereference in do_prlimit() in kernel/sys.c

A vulnerabilty was found in Linux Kernel, where a speculative pointer dereference problem exists in the Linux Kernel on the doprlimit function. The resource argument value is controlled and is used in pointer arithmetic for the 'rlim' variable and can be used to leak the contents...

x86: BTC/SRSO fixes not fully effective

ISSUE DESCRIPTION The fixes for XSA-422 Branch Type Confusion and XSA-434 Speculative Return Stack Overflow are not IRQ-safe. It was believed that the mitigations always operated in contexts with IRQs disabled. However, the original XSA-254 fix for Meltdown XPTI deliberately left interrupts enabl...