Spectre V2

Vulnerability Profile Updated 3 months ago
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Spectre v2 is a software vulnerability that arises from an incorrect implementation of its simultaneous multithreading (SMT) mitigations, particularly in relation to calling prctl with PR_SET_SPECULATION_CTRL. This flaw in the software design or execution allows for potential exploitation by malicious entities. A similar vulnerability, Spectre-BHB, operates on a comparable principle, wherein the malicious code utilizes the shared branch history stored in the CPU Branch History Buffer (BHB) to influence mispredicted branches within the victim's hardware context. Several major tech companies have responded to these vulnerabilities and their potential implications. Intel has committed to addressing the issue through software guidance, while AMD maintains that existing Spectre v2 mitigations are effective against another exploit known as SLAM. Arm, a leading technology provider, published a security advisory assuring customers that existing countermeasures for Spectre v2 and Spectre BHI should adequately protect against potential exploitations. In response to the disclosure by researchers, both Arm and AMD have reiterated their stance on the effectiveness of current Spectre v2 mitigations against the SLAM attack described by the VUSec research group. Arm has further issued an advisory explaining that no additional action is required in response to the SLAM exploit due to their existing protections against Spectre v2 and Spectre-BHB. Meanwhile, AMD did not provide any new guidance or updates to lower the risk, reinforcing their confidence in existing mitigations. Intel plans to provide software guidance prior to releasing processors which support a similar exploit called LAM.
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Lam
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Lam is a software vulnerability identified by Lam M. Nguyen, Edmund Y. Lam, and Lam Thanh Do, experts in the field of computer science. This flaw in software design or implementation allows attackers to create malicious administrator users with randomized alphanumeric usernames, as stated by Mr. Tay
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Spectreis related to
2
Spectre, also known as Spectre-BHB or branch history injection (BHI), is a software vulnerability that allows unauthorized access to sensitive data stored in the cache memory of computer systems. Discovered in 2018, it was initially dismissed by some in the semiconductor industry due to its potentia
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Source Document References
Information about the Spectre V2 Vulnerability was read from the documents corpus below. This display is limited to 20 results, create a free account to see more
SourceCreatedAtTitle
CISA
5 months ago
Siemens SCALANCE XCM-/XRM-300 | CISA
CERT-EU
7 months ago
New SLAM Attack Puts Future Intel, AMD, Arm CPUs at Risk
CERT-EU
7 months ago
Researchers say future Intel, AMD and Arm chips at risk from SLAM attack
CERT-EU
8 months ago
New SLAM attack steals sensitive data from AMD, future Intel CPUs
CERT-EU
8 months ago
New SLAM attack steals sensitive data from AMD, future Intel CPUs
CERT-EU
9 months ago
Red Hat Enterprise Linux 9.0 Extended Update Support update for kernel
CERT-EU
a year ago
Red Hat Enterprise Linux 9 update for kernel
CERT-EU
a year ago
Ubuntu update for linux-ibm
CERT-EU
a year ago
SUSE update for the Linux Kernel
CERT-EU
a year ago
SUSE update for the Linux Kernel
CERT-EU
a year ago
Ubuntu update for linux-oem-6.1
CERT-EU
a year ago
Ubuntu update for linux-aws
CERT-EU
a year ago
Spectre v2 SMT mitigations bypass in Linux kernel