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    CVE-2005-0109

    Hyper-Threading technology, as used in FreeBSD and other operating systems that are run on Intel Pentium and other processors, allows local users to use a malicious thread to create covert channels, monitor the execution of other threads, and obtain sensitive information such as cryptographic keys, via a timing attack on memory cache misses.

    Published:Mar 5, 2005
    Last Modified:Apr 16, 2026
    EPS:Mar 8, 2005
    EPSS Score:0.00143
    CVSS Score:5.6

    Affected Products

    Vendor
    Freebsd
    Product
    Freebsd
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Fedora Core
    Vendor
    Redhat
    Product
    Stronghold
    Vendor
    Sco
    Product
    Openserver
    Vendor
    Sco
    Product
    Unixware
    Vendor
    Sun
    Product
    Solaris
    Vendor
    Ubuntu
    Product
    Ubuntu 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-2026-58094 (CVSS 7.8) — The FIOSSHMLPGCNF ioctl(2) operation configures the page size for a largepage shared memory object. This is i…
    CVE-2026-58093 (CVSS 7) — The TIOCSCTTY ioctl handler drops the tty lock in order to acquire the process tree lock. After reacquiring t…
    CVE-2026-58097 (CVSS 7.8) — mp_SetEnddisc() copied a user-supplied PSN endpoint value without length validation, allowing a buffer overflo…
    CVE-2026-58096 (CVSS 8.8) — LcpDecodeConfig() did not validate the length of received endpoint discriminator options against the minimum r…
    CVE-2026-58095 (CVSS 8.8) — mp_Enddisc() used incorrect length calculations when formatting endpoint discriminator addresses for display, …
    CVE-2026-58092 (CVSS 8.1) — In FreeBSD 15.0, the kernel structure used to represent user credentials changed: previously the primary group…
    CVE-2026-58091 (CVSS 7.8) — The implementation of this ioctl attempts to acquire locks on all channels in a sync group. If locking a chan…
    CVE-2026-58090 (CVSS 7.8) — The SOCK_STREAM receive path in the unix socket implementation failed to fully detach control messages from th…
    CVE-2026-58089 (CVSS 7.8) — When a process calls execve(2) to execute a setuid or setgid image, hwpmc(4) is supposed to detach PMCs owned …
    CVE-2026-58088 (CVSS 7.4) — The ELF core dump code counted the number of dumpable VM map entries, allocated a buffer for the corresponding…

    References

    ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.24/SCOSA-2005.24.txt
    http://marc.info/?l=freebsd-hackers&m=110994026421858&w=2
    http://marc.info/?l=freebsd-security&m=110994370429609&w=2
    http://marc.info/?l=openbsd-misc&m=110995101417256&w=2
    http://secunia.com/advisories/15348
    http://secunia.com/advisories/18165
    http://securitytracker.com/id?1013967
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-101739-1
    http://www-1.ibm.com/support/docview.wss?uid=isg1SSRVHMCHMC_C081516_754
    http://www.daemonology.net/hyperthreading-considered-harmful/
    http://www.daemonology.net/papers/htt.pdf
    http://www.kb.cert.org/vuls/id/911878
    http://www.redhat.com/support/errata/RHSA-2005-476.html
    http://www.redhat.com/support/errata/RHSA-2005-800.html
    http://www.securityfocus.com/bid/12724
    http://www.vupen.com/english/advisories/2005/0540
    http://www.vupen.com/english/advisories/2005/3002
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9747
    ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.24/SCOSA-2005.24.txt
    http://marc.info/?l=freebsd-hackers&m=110994026421858&w=2
    http://marc.info/?l=freebsd-security&m=110994370429609&w=2
    http://marc.info/?l=openbsd-misc&m=110995101417256&w=2
    http://secunia.com/advisories/15348
    http://secunia.com/advisories/18165
    http://securitytracker.com/id?1013967
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-101739-1
    http://www-1.ibm.com/support/docview.wss?uid=isg1SSRVHMCHMC_C081516_754
    http://www.daemonology.net/hyperthreading-considered-harmful/
    http://www.daemonology.net/papers/htt.pdf
    http://www.kb.cert.org/vuls/id/911878
    http://www.redhat.com/support/errata/RHSA-2005-476.html
    http://www.redhat.com/support/errata/RHSA-2005-800.html
    http://www.securityfocus.com/bid/12724
    http://www.vupen.com/english/advisories/2005/0540
    http://www.vupen.com/english/advisories/2005/3002
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9747

    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