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    CVE-2007-4571

    The snd_mem_proc_read function in sound/core/memalloc.c in the Advanced Linux Sound Architecture (ALSA) in the Linux kernel before 2.6.22.8 does not return the correct write size, which allows local users to obtain sensitive information (kernel memory contents) via a small count argument, as demonstrated by multiple reads of /proc/driver/snd-page-alloc.

    Published:Sep 25, 2007
    Last Modified:Apr 23, 2026
    EPS:Sep 26, 2007
    EPSS Score:0.00149
    CVSS Score:2.1

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    https://www.exploit-db.com/exploits/30605

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ccec6e2c4a74adf76ed4e2478091a311b1806212
    http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22.8
    http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=600
    http://secunia.com/advisories/26918
    http://secunia.com/advisories/26980
    http://secunia.com/advisories/26989
    http://secunia.com/advisories/27101
    http://secunia.com/advisories/27227
    http://secunia.com/advisories/27436
    http://secunia.com/advisories/27747
    http://secunia.com/advisories/27824
    http://secunia.com/advisories/28626
    http://secunia.com/advisories/29054
    http://secunia.com/advisories/30769
    http://support.avaya.com/elmodocs2/security/ASA-2007-474.htm
    http://www.debian.org/security/2008/dsa-1479
    http://www.debian.org/security/2008/dsa-1505
    http://www.novell.com/linux/security/advisories/2007_53_kernel.html
    http://www.redhat.com/support/errata/RHSA-2007-0939.html
    http://www.redhat.com/support/errata/RHSA-2007-0993.html
    http://www.securityfocus.com/bid/25807
    http://www.securitytracker.com/id?1018734
    http://www.ubuntu.com/usn/usn-618-1
    http://www.vupen.com/english/advisories/2007/3272
    https://exchange.xforce.ibmcloud.com/vulnerabilities/36780
    https://issues.rpath.com/browse/RPL-1761
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9053
    https://www.redhat.com/archives/fedora-package-announce/2007-October/msg00083.html
    https://www.redhat.com/archives/fedora-package-announce/2007-September/msg00436.html
    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ccec6e2c4a74adf76ed4e2478091a311b1806212
    http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22.8
    http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=600
    http://secunia.com/advisories/26918
    http://secunia.com/advisories/26980
    http://secunia.com/advisories/26989
    http://secunia.com/advisories/27101
    http://secunia.com/advisories/27227
    http://secunia.com/advisories/27436
    http://secunia.com/advisories/27747
    http://secunia.com/advisories/27824
    http://secunia.com/advisories/28626
    http://secunia.com/advisories/29054
    http://secunia.com/advisories/30769
    http://support.avaya.com/elmodocs2/security/ASA-2007-474.htm
    http://www.debian.org/security/2008/dsa-1479
    http://www.debian.org/security/2008/dsa-1505
    http://www.novell.com/linux/security/advisories/2007_53_kernel.html
    http://www.redhat.com/support/errata/RHSA-2007-0939.html
    http://www.redhat.com/support/errata/RHSA-2007-0993.html
    http://www.securityfocus.com/bid/25807
    http://www.securitytracker.com/id?1018734
    http://www.ubuntu.com/usn/usn-618-1
    http://www.vupen.com/english/advisories/2007/3272
    https://exchange.xforce.ibmcloud.com/vulnerabilities/36780
    https://issues.rpath.com/browse/RPL-1761
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9053
    https://www.redhat.com/archives/fedora-package-announce/2007-October/msg00083.html
    https://www.redhat.com/archives/fedora-package-announce/2007-September/msg00436.html

    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