Vulnerability Name:

CVE-2019-19076 (CCN-171797)

Assigned:2019-09-26
Published:2019-09-26
Updated:2020-08-24
Summary:** DISPUTED ** A memory leak in the nfp_abm_u32_knode_replace() function in drivers/net/ethernet/netronome/nfp/abm/cls.c in the Linux kernel before 5.3.6 allows attackers to cause a denial of service (memory consumption), aka CID-78beef629fd9.
Note: This has been argued as not a valid vulnerability. The upstream commit 78beef629fd9 was reverted.
CVSS v3 Severity:5.9 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
5.2 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
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): High
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
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-401
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2019-19076

Source: MISC
Type: Release Notes, Vendor Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.6

Source: XF
Type: UNKNOWN
linux-kernel-cve201919076-dos(171797)

Source: MISC
Type: Patch, Vendor Advisory
https://git.kernel.org/linus/1d1997db870f4058676439ef7014390ba9e24eb2

Source: CCN
Type: Linux Kernel GIT Repository
nfp: abm: fix memory leak in nfp_abm_u32_knode_replace

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/78beef629fd95be4ed853b2d37b832f766bd96ca

Source: MISC
Type: Patch, Vendor Advisory
https://lore.kernel.org/lkml/20191204103955.63c4d9af@cakuba.netronome.com/

Source: CONFIRM
Type: Third Party Advisory
https://security.netapp.com/advisory/ntap-20191205-0001/

Source: UBUNTU
Type: Third Party Advisory
USN-4209-1

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version < 5.3.6)

    • Configuration 2:
  • cpe:/o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:5.3.5:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.disco:def:2019190760000000
    V
    		CVE-2019-19076 on Ubuntu 19.04 (disco) - low.
    2019-11-18
    oval:com.ubuntu.bionic:def:2019190760000000
    V
    		CVE-2019-19076 on Ubuntu 18.04 LTS (bionic) - low.
    2019-11-18
    oval:com.ubuntu.xenial:def:2019190760000000
    V
    		CVE-2019-19076 on Ubuntu 16.04 LTS (xenial) - low.
    2019-11-18
    BACK
    linux linux kernel *
    canonical ubuntu linux 18.04
    canonical ubuntu linux 19.04
    redhat enterprise linux 8.0
    linux linux kernel 5.3.5