Use-after-free in Linux kernel - CVE-2021-47078

Vulnerability identifier: #VU90242

CSH Severity: Low

CVSS v4 BT: 5.9 [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/E:U/U:Clear]

CVE-ID: CVE-2021-47078

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the rxe_qp_init_req(), rxe_qp_init_resp() and rxe_qp_from_init() functions in drivers/infiniband/sw/rxe/rxe_qp.c. A local user can escalate privileges on the system.

Linux kernel
openEuler
Dell Data Protection Central
PowerProtect DP Series Appliance (IDPA)
Storage Resource Manager
EMC Cloud Tiering Appliance
python3-perf-debuginfo
python3-perf
kernel-source
python2-perf-debuginfo
kernel-debugsource
python2-perf
perf
kernel-tools-devel
perf-debuginfo
kernel-tools
bpftool-debuginfo
kernel-tools-debuginfo
bpftool
kernel-debuginfo
kernel-devel
kernel
Dell EMC Storage Monitoring and Reporting (SMR)
Dell Secure Connect Gateway

Install update from vendor's website.

Linux kernel - addressed in versions 4.9.270, 4.14.234, 4.19.192, 5.4.122, 5.10.40, 5.12.7, 5.13
python3-perf-debuginfo - addressed in versions 4.19.90-2404.2.0.0246, 4.19.90-2404.2.0.0273
python3-perf - addressed in versions 4.19.90-2404.2.0.0246, 4.19.90-2404.2.0.0273
kernel-source - addressed in versions 4.19.90-2404.2.0.0246, 4.19.90-2404.2.0.0273
python2-perf-debuginfo - addressed in versions 4.19.90-2404.2.0.0246, 4.19.90-2404.2.0.0273
kernel-debugsource - addressed in versions 4.19.90-2404.2.0.0246, 4.19.90-2404.2.0.0273
python2-perf - addressed in versions 4.19.90-2404.2.0.0246, 4.19.90-2404.2.0.0273
perf - addressed in versions 4.19.90-2404.2.0.0246, 4.19.90-2404.2.0.0273
kernel-tools-devel - addressed in versions 4.19.90-2404.2.0.0246, 4.19.90-2404.2.0.0273
perf-debuginfo - addressed in versions 4.19.90-2404.2.0.0246, 4.19.90-2404.2.0.0273
kernel-tools - addressed in versions 4.19.90-2404.2.0.0246, 4.19.90-2404.2.0.0273
bpftool-debuginfo - addressed in versions 4.19.90-2404.2.0.0246, 4.19.90-2404.2.0.0273
kernel-tools-debuginfo - addressed in versions 4.19.90-2404.2.0.0246, 4.19.90-2404.2.0.0273
bpftool - addressed in versions 4.19.90-2404.2.0.0246, 4.19.90-2404.2.0.0273
kernel-debuginfo - addressed in versions 4.19.90-2404.2.0.0246, 4.19.90-2404.2.0.0273
kernel-devel - addressed in versions 4.19.90-2404.2.0.0246, 4.19.90-2404.2.0.0273
kernel - addressed in versions 4.19.90-2404.2.0.0246, 4.19.90-2404.2.0.0273
Storage Resource Manager - update to 5.0.1.0
Dell EMC Storage Monitoring and Reporting (SMR) - update to 5.0.1.0
Dell Secure Connect Gateway - update to 5.24.00.14
EMC Cloud Tiering Appliance - update to 13.2.0.2.29

• https://git.kernel.org/stable/c/c65391dd9f0a47617e96e38bd27e277cbe1c40b0
• https://git.kernel.org/stable/c/6a8086a42dfbf548a42bf2ae4faa291645c72c66
• https://git.kernel.org/stable/c/f3783c415bf6d2ead3d7aa2c38802bbe10723646
• https://git.kernel.org/stable/c/a62225d951d77eb20208fed8fc199e0c9b1df08b
• https://git.kernel.org/stable/c/2ee4d79c364914989c80de382c0b1a7259a7e4b3
• https://git.kernel.org/stable/c/03344e843ab6dd3b3f2cadfb65ed910590856c70
• https://git.kernel.org/stable/c/67f29896fdc83298eed5a6576ff8f9873f709228
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.234
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.192
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.270
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.40
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.7
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.122

• Use-after-free in Linux kernel sw rxe driver
• Multiple vulnerabilities in Dell Secure Connect Gateway
• Multiple vulnerabilities in Dell Cloud Tiering Appliance
• openEuler 20.03 LTS SP1 update for kernel
• openEuler 20.03 LTS SP4 update for kernel
• Multiple vulnerabilities in Dell Storage Resource Manager (SRM) and Dell Storage Monitoring and Reporting (SMR)
• Multiple vulnerabilities in Dell Data Protection Central