How severe is CVE-2015-6526?

CVE-2015-6526 has a CVSS 2.0 base score of 4.9, rated medium severity.

Is CVE-2015-6526 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-6526?

CVE-2015-6526 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-6526?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2015-6526 published?

CVE-2015-6526 was published on 2015-08-31 and last updated on 2026-06-17.

CVE-2015-6526

CVE-2015-6526 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 4.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

Severity: Medium (CVSS 2.0 base score 4.9)
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Linux Linux Kernel
Published: 2015-08-31
Last modified: 2026-06-17

Description

The perf_callchain_user_64 function in arch/powerpc/perf/callchain.c in the Linux kernel before 4.0.2 on ppc64 platforms allows local users to cause a denial of service (infinite loop) via a deep 64-bit userspace backtrace.

Frequently asked questions

What is CVE-2015-6526?: The perf_callchain_user_64 function in arch/powerpc/perf/callchain.c in the Linux kernel before 4.0.2 on ppc64 platforms allows local users to cause a denial of service (infinite loop) via a deep 64-bit userspace backtrace.
How severe is CVE-2015-6526?: CVE-2015-6526 has a CVSS 2.0 base score of 4.9, rated medium severity.
Is CVE-2015-6526 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-6526?: CVE-2015-6526 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-6526?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-6526 published?: CVE-2015-6526 was published on 2015-08-31 and last updated on 2026-06-17.

References

Affected products (1)

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

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