CVE-2012-0879: n/a vulnerability

CVE-2012-0879: The I/O implementation for block devices in the Linux kernel before 2.6.33 does not properly handle the CLO...

The I/O implementation for block devices in the Linux kernel before 2.6.33 does not properly handle the CLONE_IO feature, which allows local users to cause a denial of service (I/O instability) by starting multiple processes that share an I/O context.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 18:38 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old Linux kernel availability flaw. A local user on an affected system could trigger block-device I/O instability by running multiple processes that share an I/O context. The business impact is service disruption, not data theft, based on the supplied sources. Exposure is mainly legacy Linux systems running kernels before 2.6.33, or distribution kernels that did not receive the 2012 vendor fixes. Shared shell, hosting, build, or multi-user environments have higher practical risk. Treat this as a legacy Linux hygiene issue with availability impact. Prioritize if any affected host supports shared users, hosting, build workloads, or critical services. Otherwise handle through normal kernel patch governance. Mitigation focus: Apply the relevant vendor kernel security update for affected Linux distributions.; Retire or isolate systems still running Linux kernels before 2.6.33.; Limit untrusted local user access on legacy multi-user Linux hosts..

Prepared: Jun 24, 2026, 12:52 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: May 17, 2012, 10:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://bugzilla.redhat.com/show_bug.cgi?id=796829CVE reference · x_refsource_CONFIRM
https://github.com/torvalds/linux/commit/b69f2292063d2caf37ca9aec7d63ded203701bf3CVE reference · x_refsource_CONFIRM
https://github.com/torvalds/linux/commit/61cc74fbb87af6aa551a06a370590c9bc07e29d9CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

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