CVE-2018-12126(fedoraproject / fedora)

LOWCVSS 5.6 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Microarchitectural Store Buffer Data Sampling (MSBDS): Store buffers on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here: https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode-update-guidance_05132019.pdf

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-200

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • fedora
  • microarchitectural_store_buffer_data_sampling
  • microarchitectural_store_buffer_data_sampling_firmware

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • 1 total mentions across 1 day

Affected systems

Products
fedoramicroarchitectural_store_buffer_data_samplingmicroarchitectural_store_buffer_data_sampling_firmware

2 versions affected across 3 products

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-10-07: 110-07
Referenced assets1 URL
By indicator
Full discourse1 post
  • GGSec@GGASecDe

    Reproduced Fallout/MDS (CVE-2018-12126) on a Skylake. A speculative load samples a value from the store buffer; a Flush+Reload oracle reads it back — 10/10 runs, controls showing the trace follows the value, not one hot slot. https://github.com/ggsec-de/fallout-mds-lab #sidechannel #cpusecurity https://t.co/zcrU8BsZGe

    0000028
    1 followersView on X
CPE platform detail3 entries

3 of 3 entries

PartVendorProductVersionTarget SWTarget HW
OSfedoraprojectfedora29--
HWintelmicroarchitectural_store_buffer_data_sampling---
OSintelmicroarchitectural_store_buffer_data_sampling_firmware---

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