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    CVE-2015-4170

    Race condition in the ldsem_cmpxchg function in drivers/tty/tty_ldsem.c in the Linux kernel before 3.13-rc4-next-20131218 allows local users to cause a denial of service (ldsem_down_read and ldsem_down_write deadlock) by establishing a new tty thread during shutdown of a previous tty thread.

    Published:Jan 19, 2015
    Last Modified:Apr 12, 2025
    EPS:May 2, 2016
    EPSS Score:0.00064
    CVSS Score:4.7

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Compute Node Eus
    Vendor
    Redhat
    Product
    Enterprise Linux For Ibm Z Systems Eus
    Vendor
    Redhat
    Product
    Enterprise Linux For Power Big Endian Eus
    Vendor
    Redhat
    Product
    Enterprise Linux For Power Little Endian Eus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Eus
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Extras Rt

    Exploits

    No exploit reference

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    CVE-2026-80922 — In the Linux kernel, the following vulnerability has been resolved: crypto: qcom-rng - Allow zero as a random…
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    CVE-2026-80918 — In the Linux kernel, the following vulnerability has been resolved: HID: core: fix number/pointer type confus…
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    References

    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cf872776fc84128bb779ce2b83a37c884c3203ae
    http://www.openwall.com/lists/oss-security/2015/05/26/1
    http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
    http://www.securityfocus.com/bid/74820
    https://access.redhat.com/errata/RHSA-2016:1395
    https://bugzilla.redhat.com/show_bug.cgi?id=1218879
    https://github.com/torvalds/linux/commit/cf872776fc84128bb779ce2b83a37c884c3203ae
    https://www.kernel.org/pub/linux/kernel/next/patch-v3.13-rc4-next-20131218.xz
    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cf872776fc84128bb779ce2b83a37c884c3203ae
    http://www.openwall.com/lists/oss-security/2015/05/26/1
    http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
    http://www.securityfocus.com/bid/74820
    https://access.redhat.com/errata/RHSA-2016:1395
    https://bugzilla.redhat.com/show_bug.cgi?id=1218879
    https://github.com/torvalds/linux/commit/cf872776fc84128bb779ce2b83a37c884c3203ae
    https://www.kernel.org/pub/linux/kernel/next/patch-v3.13-rc4-next-20131218.xz

    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