CVE-2024-56721

x86/CPU/AMD: Terminate the erratum_1386_microcode array

HIGH
7.1
CVSS Score
Published: December 29, 2024 at 11:29 AM UTC
Updated: August 5, 2026 at 12:44 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.1
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: x86/CPU/AMD: Terminate the erratum_1386_microcode array The erratum_1386_microcode array requires an empty entry at the end. Otherwise x86_match_cpu_with_stepping() will continue iterate the array after it ended. Add an empty entry to erratum_1386_microcode to its end.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.10 ≤ v < 6.11.116.10 ≤ v < 6.12.26.10 ≤ v < 6.136.12 ≤ v < 6.12.229ba89f1895285f06c333546882e0c5ae9a6df236.10
Vendor states this is fixed in 82d6b82cf89d950982ac240ba068c3a7e1f23b0a (fixed)
Vendor states this is fixed in ccfee14f08b8699132b87bc6d78e0fa75bf094dd (fixed)
Vendor states this is fixed in ff6cdc407f4179748f4673c39b0921503199a0ad (fixed)
Vendor states this is fixed in 6.10 (unaffected)
Vendor states this is fixed in 6.11.11 (unaffected)
Vendor states this is fixed in 6.12.2 (unaffected)
Vendor states this is fixed in 6.13 (unaffected)

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/82d6b82cf89d950982ac240ba068c3a7e1f23b0a
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/ccfee14f08b8699132b87bc6d78e0fa75bf094dd
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/ff6cdc407f4179748f4673c39b0921503199a0ad

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.1HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125

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