CVE Feed

    Dashboard / CVE / CVE-2021-43395

    CVE-2021-43395

    An issue was discovered in illumos before f859e7171bb5db34321e45585839c6c3200ebb90, OmniOS Community Edition r151038, OpenIndiana Hipster 2021.04, and SmartOS 20210923. A local unprivileged user can cause a deadlock and kernel panic via crafted rename and rmdir calls on tmpfs filesystems. Oracle Solaris 10 and 11 is also affected.

    Published:Dec 26, 2022
    Last Modified:Apr 14, 2025
    EPS:Dec 26, 2022
    EPSS Score:0.00013
    CVSS Score:5.5

    Affected Products

    Vendor
    Illumos
    Product
    Illumos
    Vendor
    Joyent
    Product
    Smartos
    Vendor
    Omniosce
    Product
    Omnios
    Vendor
    Openindiana
    Product
    Openindiana
    Vendor
    Oracle
    Product
    Solaris

    Exploits

    https://github.com/illumos/illumos-gate/blob/069654420de4aade43c63c43cd2896e66945fc8a/usr/src/uts/common/fs/tmpfs/tmp_vnops.chttps://github.com/illumos/illumos-gate/blob/b3403853e80914bd0aade9b5b605da4878078173/usr/src/uts/common/fs/tmpfs/tmp_dir.chttps://github.com/illumos/illumos-gate/blob/069654420de4aade43c63c43cd2896e66945fc8a/usr/src/uts/common/fs/tmpfs/tmp_vnops.chttps://github.com/illumos/illumos-gate/blob/b3403853e80914bd0aade9b5b605da4878078173/usr/src/uts/common/fs/tmpfs/tmp_dir.c

    Common Weakness Enumeration

    CWE-667 Improper Locking

    Related CVEs

    CVE-2019-9579 (CVSS 8.1) — An issue was discovered in Illumos in Nexenta NexentaStor 4.0.5 and 5.1.2, and other products. The SMB server …
    CVE-2020-27678 (CVSS 9.8) — An issue was discovered in illumos before 2020-10-22, as used in OmniOS before r151030by, r151032ay, and r1510…
    CVE-2016-6560 (CVSS 8.6) — illumos osnet-incorporation bcopy() and bzero() implementations make signed instead of unsigned comparisons al…
    CVE-2016-6561 (CVSS 7.5) — illumos smbsrv NULL pointer dereference allows system crash.…
    CVE-2014-9491 (CVSS 5) — The devzvol_readdir function in illumos does not check the return value of a strchr call, which allows remote …
    CVE-2012-0217 (CVSS 7.2) — The x86-64 kernel system-call functionality in Xen 4.1.2 and earlier, as used in Citrix XenServer 6.0.2 and ea…

    References

    http://www.tribblix.org/relnotes.html
    https://github.com/illumos/illumos-gate/blob/069654420de4aade43c63c43cd2896e66945fc8a/usr/src/uts/common/fs/tmpfs/tmp_vnops.c
    https://github.com/illumos/illumos-gate/blob/b3403853e80914bd0aade9b5b605da4878078173/usr/src/uts/common/fs/tmpfs/tmp_dir.c
    https://github.com/illumos/illumos-gate/commit/f859e7171bb5db34321e45585839c6c3200ebb90
    https://illumos.topicbox.com/groups/developer/T1c9e4f27f8c2f959/security-heads-up-illumos14424
    https://jgardner100.wordpress.com/2022/01/20/security-heads-up/
    https://kebe.com/blog/?p=505
    https://www.illumos.org/issues/14424
    https://www.oracle.com/security-alerts/cpujan2022.html
    http://www.tribblix.org/relnotes.html
    https://github.com/illumos/illumos-gate/blob/069654420de4aade43c63c43cd2896e66945fc8a/usr/src/uts/common/fs/tmpfs/tmp_vnops.c
    https://github.com/illumos/illumos-gate/blob/b3403853e80914bd0aade9b5b605da4878078173/usr/src/uts/common/fs/tmpfs/tmp_dir.c
    https://github.com/illumos/illumos-gate/commit/f859e7171bb5db34321e45585839c6c3200ebb90
    https://illumos.topicbox.com/groups/developer/T1c9e4f27f8c2f959/security-heads-up-illumos14424
    https://jgardner100.wordpress.com/2022/01/20/security-heads-up/
    https://kebe.com/blog/?p=505
    https://www.illumos.org/issues/14424
    https://www.oracle.com/security-alerts/cpujan2022.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