Vulnerability Name:

CVE-2019-19813 (CCN-173221)

Assigned:2019-12-16
Published:2019-12-16
Updated:2021-03-12
Summary:In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in __mutex_lock in kernel/locking/mutex.c. This is related to mutex_can_spin_on_owner in kernel/locking/mutex.c, __btrfs_qgroup_free_meta in fs/btrfs/qgroup.c, and btrfs_insert_delayed_items in fs/btrfs/delayed-inode.c.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.9 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
4.0 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
3.5 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:7.1 High (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
2.1 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-416
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2019-19813

Source: XF
Type: UNKNOWN
linux-kernel-cve201919813-dos(173221)

Source: CCN
Type: GitHub Web site
CVE-2019-19813

Source: MISC
Type: Exploit, Third Party Advisory
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19813

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20200928 [SECURITY] [DLA 2385-1] linux-4.19 security update

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20210309 [SECURITY] [DLA 2586-1] linux security update

Source: CONFIRM
Type: Third Party Advisory
https://security.netapp.com/advisory/ntap-20200103-0001/

Source: UBUNTU
Type: Third Party Advisory
USN-4414-1

Source: CCN
Type: Linux kernel Web site
The Linux Kernel Archives

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:5.0.21:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

    • Configuration 3:
  • cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

    • Configuration 4:
  • cpe:/a:netapp:active_iq_unified_manager:*:*:*:*:*:vmware_vsphere:*:* (Version >= 9.5
  • OR cpe:/a:netapp:data_availability_services:-:*:*:*:*:*:*:*
  • OR cpe:/a:netapp:hci_management_node:-:*:*:*:*:*:*:*
  • OR cpe:/a:netapp:solidfire:-:*:*:*:*:*:*:*
  • OR cpe:/a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*

    • Configuration 5:
  • cpe:/o:netapp:aff_a700s_firmware:-:*:*:*:*:*:*:*
  • AND
  • cpe:/h:netapp:aff_a700s:-:*:*:*:*:*:*:*

    • Configuration 6:
  • cpe:/o:netapp:fas8300_firmware:-:*:*:*:*:*:*:*
  • AND
  • cpe:/h:netapp:fas8300:-:*:*:*:*:*:*:*

    • Configuration 7:
  • cpe:/o:netapp:fas8700_firmware:-:*:*:*:*:*:*:*
  • AND
  • cpe:/h:netapp:fas8700:-:*:*:*:*:*:*:*

    • Configuration 8:
  • cpe:/o:netapp:aff_a400_firmware:-:*:*:*:*:*:*:*
  • AND
  • cpe:/h:netapp:aff_a400:-:*:*:*:*:*:*:*

    • Configuration 9:
  • cpe:/o:netapp:h610s_firmware:-:*:*:*:*:*:*:*
  • AND
  • cpe:/h:netapp:h610s:-:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:5.0.21:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.disco:def:2019198130000000
    V
    		CVE-2019-19813 on Ubuntu 19.04 (disco) - low.
    2019-12-17
    oval:com.ubuntu.bionic:def:2019198130000000
    V
    		CVE-2019-19813 on Ubuntu 18.04 LTS (bionic) - low.
    2019-12-17
    oval:com.ubuntu.xenial:def:2019198130000000
    V
    		CVE-2019-19813 on Ubuntu 16.04 LTS (xenial) - low.
    2019-12-17
    BACK
    linux linux kernel 5.0.21
    canonical ubuntu linux 14.04
    canonical ubuntu linux 16.04
    canonical ubuntu linux 18.04
    debian debian linux 9.0
    netapp active iq unified manager *
    netapp data availability services -
    netapp hci management node -
    netapp solidfire -
    netapp steelstore cloud integrated storage -
    netapp aff a700s firmware -
    netapp aff a700s -
    netapp fas8300 firmware -
    netapp fas8300 -
    netapp fas8700 firmware -
    netapp fas8700 -
    netapp aff a400 firmware -
    netapp aff a400 -
    netapp h610s firmware -
    netapp h610s -
    linux linux kernel 5.0.21