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    CVE-2020-12771

    An issue was discovered in the Linux kernel through 5.6.11. btree_gc_coalesce in drivers/md/bcache/btree.c has a deadlock if a coalescing operation fails.

    Published:Apr 26, 2020
    Last Modified:Nov 21, 2024
    EPS:May 9, 2020
    EPSS Score:0.00063
    CVSS Score:5.5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Netapp
    Product
    A700s
    Vendor
    Netapp
    Product
    A700s Firmware
    Vendor
    Netapp
    Product
    Active Iq Unified Manager
    Vendor
    Netapp
    Product
    Cloud Backup
    Vendor
    Netapp
    Product
    Element Software
    Vendor
    Netapp
    Product
    H300e
    Vendor
    Netapp
    Product
    H300e Firmware
    Vendor
    Netapp
    Product
    H300s
    Vendor
    Netapp
    Product
    H300s Firmware
    Vendor
    Netapp
    Product
    H410c
    Vendor
    Netapp
    Product
    H410c Firmware
    Vendor
    Netapp
    Product
    H410s
    Vendor
    Netapp
    Product
    H410s Firmware
    Vendor
    Netapp
    Product
    H500e
    Vendor
    Netapp
    Product
    H500e Firmware
    Vendor
    Netapp
    Product
    H500s
    Vendor
    Netapp
    Product
    H500s Firmware
    Vendor
    Netapp
    Product
    H610c
    Vendor
    Netapp
    Product
    H610c Firmware
    Vendor
    Netapp
    Product
    H610s
    Vendor
    Netapp
    Product
    H610s Firmware
    Vendor
    Netapp
    Product
    H615c
    Vendor
    Netapp
    Product
    H615c Firmware
    Vendor
    Netapp
    Product
    H700e
    Vendor
    Netapp
    Product
    H700e Firmware
    Vendor
    Netapp
    Product
    H700s
    Vendor
    Netapp
    Product
    H700s Firmware
    Vendor
    Netapp
    Product
    Hci Bootstrap Os
    Vendor
    Netapp
    Product
    Hci Compute Node
    Vendor
    Netapp
    Product
    Hci Management Node
    Vendor
    Netapp
    Product
    Solidfire
    Vendor
    Netapp
    Product
    Steelstore Cloud Integrated Storage
    Vendor
    Opensuse
    Product
    Leap
    Vendor
    Oracle
    Product
    Sd-wan Edge

    Exploits

    https://lkml.org/lkml/2020/4/26/87https://lkml.org/lkml/2020/4/26/87

    Common Weakness Enumeration

    CWE-667 Improper Locking
    CWE-833 Deadlock

    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/2020-07/msg00071.html
    http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html
    https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html
    https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html
    https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html
    https://lkml.org/lkml/2020/4/26/87
    https://security.netapp.com/advisory/ntap-20200608-0001/
    https://usn.ubuntu.com/4462-1/
    https://usn.ubuntu.com/4463-1/
    https://usn.ubuntu.com/4465-1/
    https://usn.ubuntu.com/4483-1/
    https://usn.ubuntu.com/4485-1/
    https://www.oracle.com/security-alerts/cpuApr2021.html
    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00071.html
    http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html
    https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html
    https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html
    https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html
    https://lkml.org/lkml/2020/4/26/87
    https://security.netapp.com/advisory/ntap-20200608-0001/
    https://usn.ubuntu.com/4462-1/
    https://usn.ubuntu.com/4463-1/
    https://usn.ubuntu.com/4465-1/
    https://usn.ubuntu.com/4483-1/
    https://usn.ubuntu.com/4485-1/
    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