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    CVE-2019-9213

    In the Linux kernel before 4.20.14, expand_downwards in mm/mmap.c lacks a check for the mmap minimum address, which makes it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task.

    Published:Feb 27, 2019
    Last Modified:Nov 21, 2024
    EPS:Mar 5, 2019
    EPSS Score:0.05251
    CVSS Score:5.5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Opensuse
    Product
    Leap
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    http://packetstormsecurity.com/files/156053/Reliable-Datagram-Sockets-RDS-rds_atomic_free_op-Privilege-Escalation.htmlhttps://bugs.chromium.org/p/project-zero/issues/detail?id=1792https://www.exploit-db.com/exploits/46502/http://packetstormsecurity.com/files/156053/Reliable-Datagram-Sockets-RDS-rds_atomic_free_op-Privilege-Escalation.htmlhttps://bugs.chromium.org/p/project-zero/issues/detail?id=1792https://www.exploit-db.com/exploits/46502/https://www.exploit-db.com/exploits/46502https://www.exploit-db.com/exploits/47957

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…
    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…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    References

    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0a1d52994d440e21def1c2174932410b4f2a98a1
    http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00045.html
    http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00052.html
    http://packetstormsecurity.com/files/156053/Reliable-Datagram-Sockets-RDS-rds_atomic_free_op-Privilege-Escalation.html
    http://www.securityfocus.com/bid/107296
    https://access.redhat.com/errata/RHSA-2019:0831
    https://access.redhat.com/errata/RHSA-2019:1479
    https://access.redhat.com/errata/RHSA-2019:1480
    https://bugs.chromium.org/p/project-zero/issues/detail?id=1792
    https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.105
    https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.27
    https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.14
    https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.162
    https://github.com/torvalds/linux/commit/0a1d52994d440e21def1c2174932410b4f2a98a1
    https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
    https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
    https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html
    https://usn.ubuntu.com/3930-1/
    https://usn.ubuntu.com/3930-2/
    https://usn.ubuntu.com/3931-1/
    https://usn.ubuntu.com/3931-2/
    https://usn.ubuntu.com/3932-1/
    https://usn.ubuntu.com/3932-2/
    https://usn.ubuntu.com/3933-1/
    https://usn.ubuntu.com/3933-2/
    https://www.exploit-db.com/exploits/46502/
    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0a1d52994d440e21def1c2174932410b4f2a98a1
    http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00045.html
    http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00052.html
    http://packetstormsecurity.com/files/156053/Reliable-Datagram-Sockets-RDS-rds_atomic_free_op-Privilege-Escalation.html
    http://www.securityfocus.com/bid/107296
    https://access.redhat.com/errata/RHSA-2019:0831
    https://access.redhat.com/errata/RHSA-2019:1479
    https://access.redhat.com/errata/RHSA-2019:1480
    https://bugs.chromium.org/p/project-zero/issues/detail?id=1792
    https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.105
    https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.27
    https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.14
    https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.162
    https://github.com/torvalds/linux/commit/0a1d52994d440e21def1c2174932410b4f2a98a1
    https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
    https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
    https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html
    https://usn.ubuntu.com/3930-1/
    https://usn.ubuntu.com/3930-2/
    https://usn.ubuntu.com/3931-1/
    https://usn.ubuntu.com/3931-2/
    https://usn.ubuntu.com/3932-1/
    https://usn.ubuntu.com/3932-2/
    https://usn.ubuntu.com/3933-1/
    https://usn.ubuntu.com/3933-2/
    https://www.exploit-db.com/exploits/46502/

    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