PT-2021-17015 · Unknown · Amd System Management Unit

Name of the Vulnerable Software and Affected Versions: System Management Unit SMU affected versions not specified Description: The issue is related to improper access controls in the System Management Unit SMU, which may allow an attacker to override performance control tables located in DRAM. Th...

PT-2021-17014 · Amd · Athlon™ Series +87

Name of the Vulnerable Software and Affected Versions: No specific software or versions are mentioned. Description: The issue is related to insufficient DRAM address validation in the System Management Unit SMU, which may cause a DMA read from an invalid DRAM address to SRAM. This can result in t...

CVE-2021-42114

Modern DRAM devices PC-DDR4, LPDDR4X are affected by a vulnerability in their internal Target Row Refresh TRR mitigation against Rowhammer attacks. Novel non-uniform Rowhammer access patterns, consisting of aggressors with different frequencies, phases, and amplitudes allow triggering bit flips o...

CVE-2021-26337

Insufficient DRAM address validation in System Management Unit SMU may result in a DMA read from invalid DRAM address to SRAM resulting in SMU not servicing further requests...

CVE-2021-34387

The ARM TrustZone Technology on which Trusty is based on contains a vulnerability in access permission settings where the portion of the DRAM reserved for TrustZone is identity-mapped by TLK with read, write, and execute permissions, which gives write access to kernel code and data that is...

Design/Logic Flaw

The ARM TrustZone Technology on which Trusty is based on contains a vulnerability in access permission settings where the portion of the DRAM reserved for TrustZone is identity-mapped by TLK with read, write, and execute permissions, which gives write access to kernel code and data that is...

CVE-2021-34387

The ARM TrustZone Technology on which Trusty is based on contains a vulnerability in access permission settings where the portion of the DRAM reserved for TrustZone is identity-mapped by TLK with read, write, and execute permissions, which gives write access to kernel code and data that is...

CVE-2021-34387

CVE-2021-34387 affects NVIDIA Jetson Trusty TLK/Trusty on TrustZone. The vulnerability arises from access permission settings where the DRAM region reserved for TrustZone is identity-mapped by the TLK with read, write, and execute permissions, allowing write access to kernel code and data that sh...

NVIDIA TLK 访问控制错误漏洞

Nvidia NVIDIA TLK is a scheduler from Nvidia Corporation of America for use with Trusted Firmware-A TF-A. The NVIDIA TLK suffers from an Access Control Error vulnerability that stems from the fact that the ARM® TrustZone technology, on which Trusty is based, contains a vulnerability in the access...

Google Researchers Discover A New Variant of Rowhammer Attack

A team of security researchers from Google has demonstrated yet another variant of the Rowhammer vulnerability that targets increasingly smaller DRAM chips to bypass all current mitigations, making it a persistent threat to chip security. Dubbed "Half-Double," the new hammering technique hinges o...

Exfiltrating Data from Air-Gapped Computers via Wi-Fi Signals (Without Wi-Fi Hardware)

A security researcher has demonstrated that sensitive data could be exfiltrated from air-gapped computers via a novel technique that leverages Wi-Fi signals as a covert channel—surprisingly, without requiring the presence of Wi-Fi hardware on the targeted systems. Dubbed "AIR-FI," the attack hing...

Rowhammer DDR4 Vulnerability - Lenovo Support US

No description provided...

Poor Rowhammer Fixes On DDR4 DRAM Chips Re-Enable Bit Flipping Attacks

Remember rowhammer vulnerability? A critical issue affecting modern DRAM dynamic random access memory chips that could allow attackers to obtain higher kernel privileges on a targeted system by repeatedly accessing memory cells and induce bit flips. To mitigate Rowhammer vulnerability on the late...

CVE-2020-10255

Modern DRAM chips DDR4 and LPDDR4 after 2015 are affected by a vulnerability in deployment of internal mitigations against RowHammer attacks known as Target Row Refresh TRR, aka the TRRespass issue. To exploit this vulnerability, the attacker needs to create certain access patterns to trigger bit...

Privilege escalation

Modern DRAM chips DDR4 and LPDDR4 after 2015 are affected by a vulnerability in deployment of internal mitigations against RowHammer attacks known as Target Row Refresh TRR, aka the TRRespass issue. To exploit this vulnerability, the attacker needs to create certain access patterns to trigger bit...

CVE-2020-10255

The CVE-2020-10255/TRRRespass issue affects modern memory (DDR4/LPDDR4 after 2015) where Target Row Refresh mitigations can be bypassed by rowhammer patterns. Documents in connected sources confirm this can allow privilege escalation, kernel/Sudo compromise, and cross-tenant VM access via bit fli...

CVE-2020-10255

Modern DRAM chips DDR4 and LPDDR4 after 2015 are affected by a vulnerability in deployment of internal mitigations against RowHammer attacks known as Target Row Refresh TRR, aka the TRRespass issue. To exploit this vulnerability, the attacker needs to create certain access patterns to trigger bit...

CVE-2020-10255

A Rowhammer flaw was found in latest DDR4 DRAM hardware chips. These chips implement Target Row Refresh TRR mitigation to prevent a Rowhammer flaw-induced bit corruption across memory space. An unprivileged system user may leverage this flaw and use Rowhammer attack variants to induce bit...

RAMBleed Side-Channel Attack Exposes Privileged Memory

A team of academic researchers has discovered a follow-on to the Rowhammer class of attacks that allows attackers to read memory data on a target Windows computer, without actually accessing the memory itself. The method is dubbed RAMBleed. Andrew Kwong and Daniel Genkin at the University of...

RAMBleed Attack – Flip Bits to Steal Sensitive Data from Computer Memory

A team of cybersecurity researchers yesterday revealed details of a new side-channel attack on dynamic random-access memory DRAM that could allow malicious programs installed on a modern system to read sensitive memory data from other processes running on the same hardware. Dubbed RAMBleed and...