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Vulnerabilities / CVE-2011-3188

critical

CVE-2011-3188

kernel: net: improve sequence number generation

Published Modified
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Red Hat5.8AV:N/AC:M/Au:N/C:N/I:P/A:P

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Oracle (high), Red Hat (medium), Amazon (medium).

Description

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.

Affected packages and fixed versions

SourcePackageFixed in
amazon linux 1kernel, kernel-debuginfo, kernel-debuginfo-common-i686 and 5 more2.6.35.14-106.49.amzn1
Oracle Linux 5kernel, kernel-PAE, kernel-PAE-devel and 24 more2.6.18-274.7.1.0.1.el5 and 4 more
Oracle Linux 6kernel, kernel-debug, kernel-debug-devel and 14 more2.6.32-131.21.1.el6 and 2 more
Show all 52 entries from 3 sources
SourcePackageFixed in
amazon linux 1kernel2.6.35.14-106.49.amzn1
amazon linux 1kernel-debuginfo2.6.35.14-106.49.amzn1
amazon linux 1kernel-debuginfo-common-i6862.6.35.14-106.49.amzn1
amazon linux 1kernel-debuginfo-common-x86_642.6.35.14-106.49.amzn1
amazon linux 1kernel-devel2.6.35.14-106.49.amzn1
amazon linux 1kernel-doc2.6.35.14-106.49.amzn1
amazon linux 1kernel-headers2.6.35.14-106.49.amzn1
amazon linux 1perf2.6.35.14-106.49.amzn1
Oracle Linux 5kernel2.6.18-274.7.1.0.1.el5
Oracle Linux 5kernel-PAE2.6.18-274.7.1.0.1.el5
Oracle Linux 5kernel-PAE-devel2.6.18-274.7.1.0.1.el5
Oracle Linux 5kernel-debug2.6.18-274.7.1.0.1.el5
Oracle Linux 5kernel-debug-devel2.6.18-274.7.1.0.1.el5
Oracle Linux 5kernel-devel2.6.18-274.7.1.0.1.el5
Oracle Linux 5kernel-doc2.6.18-274.7.1.0.1.el5
Oracle Linux 5kernel-headers2.6.18-274.7.1.0.1.el5
Oracle Linux 5kernel-uek2.6.32-200.23.1.el5uek
Oracle Linux 5kernel-uek-debug2.6.32-200.23.1.el5uek
Oracle Linux 5kernel-uek-debug-devel2.6.32-200.23.1.el5uek
Oracle Linux 5kernel-uek-devel2.6.32-200.23.1.el5uek
Oracle Linux 5kernel-uek-doc2.6.32-200.23.1.el5uek
Oracle Linux 5kernel-uek-firmware2.6.32-200.23.1.el5uek
Oracle Linux 5kernel-uek-headers2.6.32-200.23.1.el5uek
Oracle Linux 5kernel-xen2.6.18-274.7.1.0.1.el5
Oracle Linux 5kernel-xen-devel2.6.18-274.7.1.0.1.el5
Oracle Linux 5ocfs2-2.6.18-274.7.1.0.1.el51.4.9-1.el5
Oracle Linux 5ocfs2-2.6.18-274.7.1.0.1.el5PAE1.4.9-1.el5
Oracle Linux 5ocfs2-2.6.18-274.7.1.0.1.el5debug1.4.9-1.el5
Oracle Linux 5ocfs2-2.6.18-274.7.1.0.1.el5xen1.4.9-1.el5
Oracle Linux 5ofa-2.6.32-200.23.1.el5uek1.5.1-4.0.53
Oracle Linux 5ofa-2.6.32-200.23.1.el5uekdebug1.5.1-4.0.53
Oracle Linux 5oracleasm-2.6.18-274.7.1.0.1.el52.0.5-1.el5
Oracle Linux 5oracleasm-2.6.18-274.7.1.0.1.el5PAE2.0.5-1.el5
Oracle Linux 5oracleasm-2.6.18-274.7.1.0.1.el5debug2.0.5-1.el5
Oracle Linux 5oracleasm-2.6.18-274.7.1.0.1.el5xen2.0.5-1.el5
Oracle Linux 6kernel2.6.32-131.21.1.el6
Oracle Linux 6kernel-debug2.6.32-131.21.1.el6
Oracle Linux 6kernel-debug-devel2.6.32-131.21.1.el6
Oracle Linux 6kernel-devel2.6.32-131.21.1.el6
Oracle Linux 6kernel-doc2.6.32-131.21.1.el6
Oracle Linux 6kernel-firmware2.6.32-131.21.1.el6
Oracle Linux 6kernel-headers2.6.32-131.21.1.el6
Oracle Linux 6kernel-uek2.6.32-200.23.1.el6uek
Oracle Linux 6kernel-uek-debug2.6.32-200.23.1.el6uek
Oracle Linux 6kernel-uek-debug-devel2.6.32-200.23.1.el6uek
Oracle Linux 6kernel-uek-devel2.6.32-200.23.1.el6uek
Oracle Linux 6kernel-uek-doc2.6.32-200.23.1.el6uek
Oracle Linux 6kernel-uek-firmware2.6.32-200.23.1.el6uek
Oracle Linux 6kernel-uek-headers2.6.32-200.23.1.el6uek
Oracle Linux 6ofa-2.6.32-200.23.1.el6uek1.5.1-4.0.47
Oracle Linux 6ofa-2.6.32-200.23.1.el6uekdebug1.5.1-4.0.47
Oracle Linux 6perf2.6.32-131.21.1.el6

References

All 14 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.