How severe is CVE-2006-1523?

CVE-2006-1523 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2006-1523 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-1523?

CVE-2006-1523 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-1523?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2006-1523 published?

CVE-2006-1523 was published on 2006-04-12 and last updated on 2026-06-16.

CVE-2006-1523

CVE-2006-1523 is a critical-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Linux Linux Kernel
Published: 2006-04-12
Last modified: 2026-06-16

Description

The __group_complete_signal function in the RCU signal handling (signal.c) in Linux kernel 2.6.16, and possibly other versions, has unknown impact and attack vectors related to improper use of BUG_ON.

Frequently asked questions

What is CVE-2006-1523?: The __group_complete_signal function in the RCU signal handling (signal.c) in Linux kernel 2.6.16, and possibly other versions, has unknown impact and attack vectors related to improper use of BUG_ON.
How severe is CVE-2006-1523?: CVE-2006-1523 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2006-1523 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-1523?: CVE-2006-1523 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-1523?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2006-1523 published?: CVE-2006-1523 was published on 2006-04-12 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:linux:linux_kernel:2.6.16:*:*:*:*:*:*:*

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