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Vulnerability Details :

CVE-2026-43079

Summary
Assigner-Linux
Assigner Org ID-416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published At-06 May, 2026 | 07:40
Updated At-06 May, 2026 | 07:40
Rejected At-
Credits

perf/x86/intel/uncore: Skip discovery table for offline dies

In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel/uncore: Skip discovery table for offline dies This warning can be triggered if NUMA is disabled and the system boots with fewer CPUs than the number of CPUs in die 0. WARNING: CPU: 9 PID: 7257 at uncore.c:1157 uncore_pci_pmu_register+0x136/0x160 [intel_uncore] Currently, the discovery table continues to be parsed even if all CPUs in the associated die are offline. This can lead to an array overflow at "pmu->boxes[die] = box" in uncore_pci_pmu_register(), which may trigger the warning above or cause other issues.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:Linux
Assigner Org ID:416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published At:06 May, 2026 | 07:40
Updated At:06 May, 2026 | 07:40
Rejected At:
▼CVE Numbering Authority (CNA)
perf/x86/intel/uncore: Skip discovery table for offline dies

In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel/uncore: Skip discovery table for offline dies This warning can be triggered if NUMA is disabled and the system boots with fewer CPUs than the number of CPUs in die 0. WARNING: CPU: 9 PID: 7257 at uncore.c:1157 uncore_pci_pmu_register+0x136/0x160 [intel_uncore] Currently, the discovery table continues to be parsed even if all CPUs in the associated die are offline. This can lead to an array overflow at "pmu->boxes[die] = box" in uncore_pci_pmu_register(), which may trigger the warning above or cause other issues.

Affected Products
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • arch/x86/events/intel/uncore_discovery.c
Default Status
unaffected
Versions
Affected
  • From edae1f06c2cda41edffc93de6aedc8ba8dc883c3 before cfab2c817d2e7e0bee98d66850246ce842ed5f18 (git)
  • From edae1f06c2cda41edffc93de6aedc8ba8dc883c3 before 6cfc187d85f18f976d0fe527d4c6f6171542cc19 (git)
  • From edae1f06c2cda41edffc93de6aedc8ba8dc883c3 before f34feda8e0c9535fee3f8870ce8bab53c2798f71 (git)
  • From edae1f06c2cda41edffc93de6aedc8ba8dc883c3 before 7a2cb02437d92ed14fe494d8994056d5bd2c72b4 (git)
  • From edae1f06c2cda41edffc93de6aedc8ba8dc883c3 before 7b568e9eba2fad89a696f22f0413d44cf4a1f892 (git)
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • arch/x86/events/intel/uncore_discovery.c
Default Status
affected
Versions
Affected
  • 5.13
Unaffected
  • From 0 before 5.13 (semver)
  • From 6.6.136 through 6.6.* (semver)
  • From 6.12.83 through 6.12.* (semver)
  • From 6.18.24 through 6.18.* (semver)
  • From 6.19.14 through 6.19.* (semver)
  • From 7.0 through * (original_commit_for_fix)
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://git.kernel.org/stable/c/cfab2c817d2e7e0bee98d66850246ce842ed5f18
N/A
https://git.kernel.org/stable/c/6cfc187d85f18f976d0fe527d4c6f6171542cc19
N/A
https://git.kernel.org/stable/c/f34feda8e0c9535fee3f8870ce8bab53c2798f71
N/A
https://git.kernel.org/stable/c/7a2cb02437d92ed14fe494d8994056d5bd2c72b4
N/A
https://git.kernel.org/stable/c/7b568e9eba2fad89a696f22f0413d44cf4a1f892
N/A
Hyperlink: https://git.kernel.org/stable/c/cfab2c817d2e7e0bee98d66850246ce842ed5f18
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/6cfc187d85f18f976d0fe527d4c6f6171542cc19
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/f34feda8e0c9535fee3f8870ce8bab53c2798f71
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/7a2cb02437d92ed14fe494d8994056d5bd2c72b4
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/7b568e9eba2fad89a696f22f0413d44cf4a1f892
Resource: N/A
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published At:06 May, 2026 | 10:16
Updated At:06 May, 2026 | 10:16

In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel/uncore: Skip discovery table for offline dies This warning can be triggered if NUMA is disabled and the system boots with fewer CPUs than the number of CPUs in die 0. WARNING: CPU: 9 PID: 7257 at uncore.c:1157 uncore_pci_pmu_register+0x136/0x160 [intel_uncore] Currently, the discovery table continues to be parsed even if all CPUs in the associated die are offline. This can lead to an array overflow at "pmu->boxes[die] = box" in uncore_pci_pmu_register(), which may trigger the warning above or cause other issues.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
CPE Matches
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://git.kernel.org/stable/c/6cfc187d85f18f976d0fe527d4c6f6171542cc19416baaa9-dc9f-4396-8d5f-8c081fb06d67
N/A
https://git.kernel.org/stable/c/7a2cb02437d92ed14fe494d8994056d5bd2c72b4416baaa9-dc9f-4396-8d5f-8c081fb06d67
N/A
https://git.kernel.org/stable/c/7b568e9eba2fad89a696f22f0413d44cf4a1f892416baaa9-dc9f-4396-8d5f-8c081fb06d67
N/A
https://git.kernel.org/stable/c/cfab2c817d2e7e0bee98d66850246ce842ed5f18416baaa9-dc9f-4396-8d5f-8c081fb06d67
N/A
https://git.kernel.org/stable/c/f34feda8e0c9535fee3f8870ce8bab53c2798f71416baaa9-dc9f-4396-8d5f-8c081fb06d67
N/A
Hyperlink: https://git.kernel.org/stable/c/6cfc187d85f18f976d0fe527d4c6f6171542cc19
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/7a2cb02437d92ed14fe494d8994056d5bd2c72b4
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/7b568e9eba2fad89a696f22f0413d44cf4a1f892
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/cfab2c817d2e7e0bee98d66850246ce842ed5f18
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/f34feda8e0c9535fee3f8870ce8bab53c2798f71
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Resource: N/A

Change History

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