Out-of-bounds read in Linux kernel - CVE-2019-15925

Vulnerability identifier: #VU30791

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-15925

CWE-ID: CWE-125

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local authenticated user to execute arbitrary code.

An issue was discovered in the Linux kernel before 5.2.3. An out of bounds access exists in the function hclge_tm_schd_mode_vnet_base_cfg in the file drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c.

Linux kernel
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for ARM 64
Red Hat Enterprise Linux for x86_64
Ubuntu
linux-hwe (Ubuntu package)
linux (Ubuntu package)
linux-gcp (Ubuntu package)
linux-aws (Ubuntu package)
linux-kvm (Ubuntu package)
linux-azure (Ubuntu package)
linux-raspi2 (Ubuntu package)
linux-snapdragon (Ubuntu package)
linux-gke-5.0 (Ubuntu package)
kernel (Red Hat package)

Install update from vendor's website.

Linux kernel - update to 5.2.3
linux-hwe (Ubuntu package) - update to 5.0.0-31.33~18.04.1
linux (Ubuntu package) - update to 5.0.0-31.33
linux-gcp (Ubuntu package) - update to 5.0.0-1020.20
linux-aws (Ubuntu package) - update to 5.0.0-1018.20
linux-kvm (Ubuntu package) - update to 5.0.0-1019.20
linux-azure (Ubuntu package) - update to 5.0.0-1022.23
linux-raspi2 (Ubuntu package) - update to 5.0.0-1019.19
linux-snapdragon (Ubuntu package) - update to 5.0.0-1023.24
linux-gke-5.0 (Ubuntu package) - update to 5.0.0-1020.20~18.04.1
kernel (Red Hat package) - update to 4.18.0-240.el8

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.3
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04f25edb48c441fc278ecc154c270f16966cbb90
• https://security.netapp.com/advisory/ntap-20191004-0001/
• https://usn.ubuntu.com/4147-1/

• Multiple vulnerabilities in Linux kernel
• Red Hat Enterprise Linux 8 update for kernel
• Ubuntu update for linux, linux-aws, linux-azure and more