USN-5210-2: Linux kernel regression

USN-5210-1 fixed vulnerabilities in the Linux kernel. Unfortunately, that update introduced a regression that caused failures to boot in environments with AMD Secure Encrypted Virtualization SEV enabled. This update fixes the problem. We apologize for the inconvenience. Original advisory details:...

CVE-2022-21894

creationtimestamp| type| source ---|---|--- 2022-01-12 00:17:56+00:00| seen| https://t.me/cibsecurity/35295 2022-08-18 13:42:44+00:00| published-proof-of-concept| https://t.me/GithubRedTeam/2984 2022-08-18 15:53:26+00:00| seen| https://t.me/crackcodes/1040 2022-08-18 15:56:07+00:00| seen|...

CVE-2022-21894

Secure Boot Security Feature Bypass Vulnerability...

CVE-2022-21894

Secure Boot Security Feature Bypass Vulnerability...

CVE-2022-21894

Secure Boot Security Feature Bypass Vulnerability...

Security feature bypass

Secure Boot Security Feature Bypass Vulnerability...

CVE-2022-21894 Secure Boot Security Feature Bypass Vulnerability

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CVE-2022-21894

CVE-2022-21894 is a Secure Boot security feature bypass exploited by the BlackLotus UEFI bootkit. It bypasses Secure Boot to load malicious EFI components, enabling persistence, disabling HVCI and Defender, and prior to OS load. Attack requires elevated privileges or physical access; bootkit impl...

CVE-2022-21894 Secure Boot Security Feature Bypass Vulnerability

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Secure Boot Security Feature Bypass Vulnerability

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PT-2022-15180

Name of the Vulnerable Software and Affected Versions Microsoft Windows 11 affected versions not specified Description A security feature bypass allows attackers to circumvent Secure Boot, enabling the installation of UEFI bootkits such as BlackLotus. This issue is exploited by deploying vulnerab...

Microsoft Windows Secure Boot 安全特征问题漏洞

Microsoft Windows Secure Boot is a secure boot from Microsoft Corporation USA. Microsoft Windows Secure Boot is vulnerable to a security feature issue. The following products and editions are affected:Windows 10 Version 1809 for 32-bit Systems,Windows 10 Version 1809 for x64-based Systems,Windows...

Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-5210-1)

The remote Ubuntu 18.04 LTS / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5210-1 advisory. Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local...

EulerOS Virtualization 3.0.2.6 : grub2 (EulerOS-SA-2021-2868)

According to the versions of the grub2 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - A flaw was found in grub2 in versions prior to 2.06, where it incorrectly enables the usage of the ACPI command when Secure Boot i...

kexec-tools security, bug fix, and enhancement update

2.0.20-57.0.3 - Merge 8.4 extra patches for SB boot environment Orabug: 33512440 2.0.20-57.0.2 - Merge SRPM/ol8-u4 orabug patches into SRPM/ol8-u5 Orabug: 33471981 2.0.20-57.0.1 - makedumpfile: Add support for newer kernels up to v5.12 Orabug: 33250117 2.0.20-57 - kdumpctl: enable secure boot on...

kernel: powerpc: RTAS calls can be used to compromise kernel integrity

A flaw was found in the way RTAS handled memory accesses in userspace to kernel communication. On a locked down usually due to Secure Boot guest system running on top of PowerVM or KVM hypervisors pseries platform a root like local user could use this flaw to further increase their privileges to...

NewStart CGSL CORE 5.04 / MAIN 5.04 : grub2 Multiple Vulnerabilities (NS-SA-2021-0097)

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has grub2 packages installed that are affected by multiple vulnerabilities: - A flaw was found in grub2 in versions prior to 2.06, where it incorrectly enables the usage of the ACPI command when Secure Boot is enabled. This fla...

NewStart CGSL CORE 5.05 / MAIN 5.05 : fwupdate Vulnerability (NS-SA-2021-0136)

The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has fwupdate packages installed that are affected by a vulnerability: - A flaw was found in grub2, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper the GRUB verification process. This flaw also...

NewStart CGSL CORE 5.05 / MAIN 5.05 : grub2 Multiple Vulnerabilities (NS-SA-2021-0139)

The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has grub2 packages installed that are affected by multiple vulnerabilities: - A flaw was found in grub2, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper the GRUB verification process. This flaw...

NewStart CGSL MAIN 6.02 : grub2 Multiple Vulnerabilities (NS-SA-2021-0133)

The remote NewStart CGSL host, running version MAIN 6.02, has grub2 packages installed that are affected by multiple vulnerabilities: - A flaw was found in grub2 in versions prior to 2.06, where it incorrectly enables the usage of the ACPI command when Secure Boot is enabled. This flaw allows an...