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Fencer Intel
medium 4.6

CVE-2024-36311 json

A Time-of-check time-of-use (TOCTOU) race condition in the SMM communications buffer could allow a privileged attacker to bypass input vali…

published 9mo ago modified 4mo ago also EUVD-2024-55411

cvss
4.6
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 3%
public exploits
0
none known

Summary

A Time-of-check time-of-use (TOCTOU) race condition in the SMM communications buffer could allow a privileged attacker to bypass input validation and perform an out of bounds read or write, potentially resulting in loss of confidentiality, integrity, or availability.

Patch / fix

  • AMD AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ Graphics DragonRangeFL1PI 1.0.0.3h
  • AMD AMD Ryzen™ 7000 Series Desktop Processors ComboAM5PI 1.0.0.b, ComboAM5PI 1.1.0.3d, ComboAM5PI 1.2.0.3d
  • AMD AMD Ryzen™ 9000HX Series Mobile Processors FireRangeFL1PI 1.0.0.0a
  • AMD AMD Ryzen™ 8000 Series Desktop Processors ComboAM5PI 1.1.0.3d, ComboAM5PI 1.2.0.3d
  • AMD AMD Ryzen™ 9000 Series Desktop Processors ComboAM5PI 1.2.0.3d
  • AMD AMD Ryzen™ Embedded 7000 Series Processors EmbeddedAM5PI 1.0.0.4​

Is CVE-2024-36311 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
9mo ago

Exploit prediction

0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 4.0 4.6 CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
CNA 4.0 4.6 CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • AMD AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ Graphics
  • AMD AMD Ryzen™ 7000 Series Desktop Processors
  • AMD AMD Ryzen™ 9000HX Series Mobile Processors
  • AMD AMD Ryzen™ 8000 Series Desktop Processors
  • AMD AMD Ryzen™ 9000 Series Desktop Processors
  • AMD AMD Ryzen™ Embedded 7000 Series Processors

Classification

Weakness
  • CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.