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    CVE-2015-2925

    The prepend_path function in fs/dcache.c in the Linux kernel before 4.2.4 does not properly handle rename actions inside a bind mount, which allows local users to bypass an intended container protection mechanism by renaming a directory, related to a "double-chroot attack."

    Published:Apr 3, 2015
    Last Modified:Apr 12, 2025
    EPS:Nov 16, 2015
    EPSS Score:0.00958
    CVSS Score:6.9

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Mrg
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Extras Rt

    Exploits

    https://github.com/Kagami/docker_cve-2015-2925

    Related CVEs

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    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
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    References

    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=397d425dc26da728396e66d392d5dcb8dac30c37
    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cde93be45a8a90d8c264c776fab63487b5038a65
    http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00005.html
    http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00018.html
    http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00007.html
    http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.html
    http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.html
    http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00018.html
    http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00019.html
    http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00020.html
    http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00021.html
    http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00022.html
    http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00034.html
    http://permalink.gmane.org/gmane.linux.kernel.containers/29173
    http://permalink.gmane.org/gmane.linux.kernel.containers/29177
    http://pkgs.fedoraproject.org/cgit/kernel.git/commit/?h=f22&id=520b64102de2f184036024b2a53de2b67463bd78
    http://rhn.redhat.com/errata/RHSA-2015-2636.html
    http://rhn.redhat.com/errata/RHSA-2016-0068.html
    http://www.debian.org/security/2015/dsa-3364
    http://www.debian.org/security/2015/dsa-3372
    http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.2.4
    http://www.openwall.com/lists/oss-security/2015/04/04/4
    http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
    http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
    http://www.securityfocus.com/bid/73926
    http://www.ubuntu.com/usn/USN-2792-1
    http://www.ubuntu.com/usn/USN-2794-1
    http://www.ubuntu.com/usn/USN-2795-1
    http://www.ubuntu.com/usn/USN-2798-1
    http://www.ubuntu.com/usn/USN-2799-1
    https://bugzilla.redhat.com/show_bug.cgi?id=1209367
    https://bugzilla.redhat.com/show_bug.cgi?id=1209373
    https://github.com/torvalds/linux/commit/397d425dc26da728396e66d392d5dcb8dac30c37
    https://github.com/torvalds/linux/commit/cde93be45a8a90d8c264c776fab63487b5038a65
    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=397d425dc26da728396e66d392d5dcb8dac30c37
    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cde93be45a8a90d8c264c776fab63487b5038a65
    http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00005.html
    http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00018.html
    http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00007.html
    http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.html
    http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.html
    http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00018.html
    http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00019.html
    http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00020.html
    http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00021.html
    http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00022.html
    http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00034.html
    http://permalink.gmane.org/gmane.linux.kernel.containers/29173
    http://permalink.gmane.org/gmane.linux.kernel.containers/29177
    http://pkgs.fedoraproject.org/cgit/kernel.git/commit/?h=f22&id=520b64102de2f184036024b2a53de2b67463bd78
    http://rhn.redhat.com/errata/RHSA-2015-2636.html
    http://rhn.redhat.com/errata/RHSA-2016-0068.html
    http://www.debian.org/security/2015/dsa-3364
    http://www.debian.org/security/2015/dsa-3372
    http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.2.4
    http://www.openwall.com/lists/oss-security/2015/04/04/4
    http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
    http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
    http://www.securityfocus.com/bid/73926
    http://www.ubuntu.com/usn/USN-2792-1
    http://www.ubuntu.com/usn/USN-2794-1
    http://www.ubuntu.com/usn/USN-2795-1
    http://www.ubuntu.com/usn/USN-2798-1
    http://www.ubuntu.com/usn/USN-2799-1
    https://bugzilla.redhat.com/show_bug.cgi?id=1209367
    https://bugzilla.redhat.com/show_bug.cgi?id=1209373
    https://github.com/torvalds/linux/commit/397d425dc26da728396e66d392d5dcb8dac30c37
    https://github.com/torvalds/linux/commit/cde93be45a8a90d8c264c776fab63487b5038a65

    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