CVE-2011-3188: n/a vulnerability

CVE-2011-3188: The (1) IPv4 and (2) IPv6 implementations in the Linux kernel before 3.1 use a modified MD4 algorithm to ge...

The (1) IPv4 and (2) IPv6 implementations in the Linux kernel before 3.1 use a modified MD4 algorithm to generate sequence numbers and Fragment Identification values, which makes it easier for remote attackers to cause a denial of service (disrupted networking) or hijack network sessions by predicting these values and sending crafted packets.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 23:22 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old Linux kernel networking flaw. Kernels before 3.1 used predictable values for network sequencing and fragmentation, which could let a remote attacker disrupt connections or interfere with sessions. The main business risk is legacy or embedded systems still running unsupported kernels. Exposure is most plausible on legacy Linux systems, appliances, or vendor products still based on kernels before 3.1. Current supported Linux distributions are unlikely to be exposed, but unmanaged embedded systems may remain a blind spot. Treat this as a legacy risk cleanup item, not an emergency, unless critical systems still run pre-3.1 Linux kernels or affected appliances. Prioritize inventory confirmation and vendor-supported remediation. Mitigation focus: Inventory Linux kernels and vendor appliances for kernel lineage before 3.1.; Upgrade to a vendor-supported kernel or release containing the upstream fixes.; Check vendor advisories for backported fixes before judging by version string alone..

Prepared: Jun 24, 2026, 12:34 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 24, 2012, 23:00 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

5Source 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://github.com/torvalds/linux/commit/bc0b96b54a21246e377122d54569eef71cec535fCVE reference · x_refsource_CONFIRM
https://github.com/torvalds/linux/commit/6e5714eaf77d79ae1c8b47e3e040ff5411b717ecCVE reference · x_refsource_CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=732658CVE reference · x_refsource_CONFIRM
https://support.f5.com/csp/article/K15301?utm_source=f5support&amp%3Butm_medium=RSSCVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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