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    CVE-2006-2446

    Race condition between the kfree_skb and __skb_unlink functions in the socket buffer handling in Linux kernel 2.6.9, and possibly other versions, allows remote attackers to cause a denial of service (crash), as demonstrated using the TCP stress tests from the LTP test suite.

    Published:Aug 10, 2006
    Last Modified:Apr 16, 2026
    EPS:Aug 15, 2006
    EPSS Score:0.01942
    CVSS Score:5.4

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-80925 — In the Linux kernel, the following vulnerability has been resolved: vlan: fix skb_under_panic and races when …
    CVE-2026-80924 (CVSS 7.5) — In the Linux kernel, the following vulnerability has been resolved: crypto: krb5 - use kfree_sensitive() for …
    CVE-2026-80923 — In the Linux kernel, the following vulnerability has been resolved: xhci: dbgtty: Fix unregister on tty_regis…
    CVE-2026-80922 — In the Linux kernel, the following vulnerability has been resolved: crypto: qcom-rng - Allow zero as a random…
    CVE-2026-80921 (CVSS 8.8) — In the Linux kernel, the following vulnerability has been resolved: KVM: s390: vsie: zero stale crypto bits …
    CVE-2026-80920 — In the Linux kernel, the following vulnerability has been resolved: io_uring: defer eventfd signaling when qu…
    CVE-2026-80919 — In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix recursive ww_mutex acquir…
    CVE-2026-80918 — In the Linux kernel, the following vulnerability has been resolved: HID: core: fix number/pointer type confus…
    CVE-2026-80917 — In the Linux kernel, the following vulnerability has been resolved: PCI: host-generic: Fix NULL pointer deref…
    CVE-2026-80916 — In the Linux kernel, the following vulnerability has been resolved: kcov: fix data corruption and race condit…

    References

    http://secunia.com/advisories/21465
    http://secunia.com/advisories/22082
    http://secunia.com/advisories/22093
    http://secunia.com/advisories/22417
    http://support.avaya.com/elmodocs2/security/ASA-2006-200.htm
    http://www.debian.org/security/2006/dsa-1183
    http://www.debian.org/security/2006/dsa-1184
    http://www.mandriva.com/security/advisories?name=MDKSA-2007:025
    http://www.redhat.com/support/errata/RHSA-2006-0575.html
    http://www.securityfocus.com/bid/19475
    https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=192779
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9117
    http://secunia.com/advisories/21465
    http://secunia.com/advisories/22082
    http://secunia.com/advisories/22093
    http://secunia.com/advisories/22417
    http://support.avaya.com/elmodocs2/security/ASA-2006-200.htm
    http://www.debian.org/security/2006/dsa-1183
    http://www.debian.org/security/2006/dsa-1184
    http://www.mandriva.com/security/advisories?name=MDKSA-2007:025
    http://www.redhat.com/support/errata/RHSA-2006-0575.html
    http://www.securityfocus.com/bid/19475
    https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=192779
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9117

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High