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    CVE-2020-8428

    fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free, which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket, if the socket is being moved to a new parent directory and its old parent directory is being removed.

    Published:Jan 28, 2020
    Last Modified:Nov 21, 2024
    EPS:Jan 28, 2020
    EPSS Score:0.00102
    CVSS Score:7.1

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-416 Use After Free

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
    http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html
    http://www.openwall.com/lists/oss-security/2020/01/28/4
    http://www.openwall.com/lists/oss-security/2020/02/02/1
    https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0cb50185ae942b03c4327be322055d622dc79f6
    https://github.com/torvalds/linux/commit/d0cb50185ae942b03c4327be322055d622dc79f6
    https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
    https://security.netapp.com/advisory/ntap-20200313-0003/
    https://usn.ubuntu.com/4318-1/
    https://usn.ubuntu.com/4319-1/
    https://usn.ubuntu.com/4320-1/
    https://usn.ubuntu.com/4324-1/
    https://usn.ubuntu.com/4325-1/
    https://www.debian.org/security/2020/dsa-4667
    https://www.debian.org/security/2020/dsa-4698
    https://www.openwall.com/lists/oss-security/2020/01/28/2
    http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
    http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html
    http://www.openwall.com/lists/oss-security/2020/01/28/4
    http://www.openwall.com/lists/oss-security/2020/02/02/1
    https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0cb50185ae942b03c4327be322055d622dc79f6
    https://github.com/torvalds/linux/commit/d0cb50185ae942b03c4327be322055d622dc79f6
    https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
    https://security.netapp.com/advisory/ntap-20200313-0003/
    https://usn.ubuntu.com/4318-1/
    https://usn.ubuntu.com/4319-1/
    https://usn.ubuntu.com/4320-1/
    https://usn.ubuntu.com/4324-1/
    https://usn.ubuntu.com/4325-1/
    https://www.debian.org/security/2020/dsa-4667
    https://www.debian.org/security/2020/dsa-4698
    https://www.openwall.com/lists/oss-security/2020/01/28/2

    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