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    CVE-2019-11487

    The Linux kernel before 5.1-rc5 allows page->_refcount reference count overflow, with resultant use-after-free issues, if about 140 GiB of RAM exists. This is related to fs/fuse/dev.c, fs/pipe.c, fs/splice.c, include/linux/mm.h, include/linux/pipe_fs_i.h, kernel/trace/trace.c, mm/gup.c, and mm/hugetlb.c. It can occur with FUSE requests.

    Published:Apr 22, 2019
    Last Modified:Nov 21, 2024
    EPS:Apr 23, 2019
    EPSS Score:0.00059
    CVSS Score:7.8

    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 Aus
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Extras Rt
    Vendor
    Redhat
    Product
    Rhel Tus

    Exploits

    https://bugs.chromium.org/p/project-zero/issues/detail?id=1752https://lwn.net/Articles/786044/https://bugs.chromium.org/p/project-zero/issues/detail?id=1752https://lwn.net/Articles/786044/

    Common Weakness Enumeration

    CWE-416 Use After Free

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-13476 (CVSS 7.3) — IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary co…
    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://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
    http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00040.html
    http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html
    http://www.openwall.com/lists/oss-security/2019/04/29/1
    http://www.securityfocus.com/bid/108054
    https://access.redhat.com/errata/RHSA-2019:2703
    https://access.redhat.com/errata/RHSA-2019:2741
    https://access.redhat.com/errata/RHSA-2020:0174
    https://bugs.chromium.org/p/project-zero/issues/detail?id=1752
    https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=15fab63e1e57be9fdb5eec1bbc5916e9825e9acb
    https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6b3a707736301c2128ca85ce85fb13f60b5e350a
    https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=88b1a17dfc3ed7728316478fae0f5ad508f50397
    https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8fde12ca79aff9b5ba951fce1a2641901b8d8e64
    https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f958d7b528b1b40c44cfda5eabe2d82760d868c3
    https://github.com/torvalds/linux/commit/15fab63e1e57be9fdb5eec1bbc5916e9825e9acb
    https://github.com/torvalds/linux/commit/6b3a707736301c2128ca85ce85fb13f60b5e350a
    https://github.com/torvalds/linux/commit/88b1a17dfc3ed7728316478fae0f5ad508f50397
    https://github.com/torvalds/linux/commit/8fde12ca79aff9b5ba951fce1a2641901b8d8e64
    https://github.com/torvalds/linux/commit/f958d7b528b1b40c44cfda5eabe2d82760d868c3
    https://lists.debian.org/debian-lts-announce/2019/09/msg00014.html
    https://lists.debian.org/debian-lts-announce/2019/09/msg00015.html
    https://lwn.net/Articles/786044/
    https://security.netapp.com/advisory/ntap-20190517-0005/
    https://support.f5.com/csp/article/K14255532
    https://usn.ubuntu.com/4069-1/
    https://usn.ubuntu.com/4069-2/
    https://usn.ubuntu.com/4115-1/
    https://usn.ubuntu.com/4118-1/
    https://usn.ubuntu.com/4145-1/
    https://www.oracle.com/security-alerts/cpuApr2021.html
    http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
    http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00040.html
    http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html
    http://www.openwall.com/lists/oss-security/2019/04/29/1
    http://www.securityfocus.com/bid/108054
    https://access.redhat.com/errata/RHSA-2019:2703
    https://access.redhat.com/errata/RHSA-2019:2741
    https://access.redhat.com/errata/RHSA-2020:0174
    https://bugs.chromium.org/p/project-zero/issues/detail?id=1752
    https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=15fab63e1e57be9fdb5eec1bbc5916e9825e9acb
    https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6b3a707736301c2128ca85ce85fb13f60b5e350a
    https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=88b1a17dfc3ed7728316478fae0f5ad508f50397
    https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8fde12ca79aff9b5ba951fce1a2641901b8d8e64
    https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f958d7b528b1b40c44cfda5eabe2d82760d868c3
    https://github.com/torvalds/linux/commit/15fab63e1e57be9fdb5eec1bbc5916e9825e9acb
    https://github.com/torvalds/linux/commit/6b3a707736301c2128ca85ce85fb13f60b5e350a
    https://github.com/torvalds/linux/commit/88b1a17dfc3ed7728316478fae0f5ad508f50397
    https://github.com/torvalds/linux/commit/8fde12ca79aff9b5ba951fce1a2641901b8d8e64
    https://github.com/torvalds/linux/commit/f958d7b528b1b40c44cfda5eabe2d82760d868c3
    https://lists.debian.org/debian-lts-announce/2019/09/msg00014.html
    https://lists.debian.org/debian-lts-announce/2019/09/msg00015.html
    https://lwn.net/Articles/786044/
    https://security.netapp.com/advisory/ntap-20190517-0005/
    https://support.f5.com/csp/article/K14255532
    https://usn.ubuntu.com/4069-1/
    https://usn.ubuntu.com/4069-2/
    https://usn.ubuntu.com/4115-1/
    https://usn.ubuntu.com/4118-1/
    https://usn.ubuntu.com/4145-1/
    https://www.oracle.com/security-alerts/cpuApr2021.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