Security Bulletin: Publicly disclosed vulnerabilities from Kernel affect IBM Netezza Host Management

Vulnerability Details

CVEID:   CVE-2021-3347
DESCRIPTION:   Linux Kernel could allow a local authenticated attacker to gain elevated privileges on the system, caused by a kernel stack use-after-free during fault handling in PI futexes. An attacker could exploit this vulnerability to gain elevated privileges and execute arbitrary code in the kernel.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/195798 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

CVEID:   CVE-2021-27365
DESCRIPTION:   Linux Kernel could allow a local authenticated attacker to obtain sensitive information, caused by an issue when certain iSCSI data structures do not have appropriate length constraints or checks, and can exceed the PAGE_SIZE value. By sending a specially-crafted Netlink message, an attacker could exploit this vulnerability to obtain memory information, and use this information to launch further attacks against the affected system.
CVSS Base score: 5.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/197859 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)

CVEID:   CVE-2021-27364
DESCRIPTION:   Linux Kernel could allow a local authenticated attacker to execute arbitrary commands on the system, caused by a flaw in the iscsi_if_recv_msg function in drivers/scsi/scsi_transport_iscsi.c. By sending specially-crafted Netlink messages, an attacker could exploit this vulnerability to connect to the iscsi NETLINK socket and send arbitrary commands to the kernel.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/197858 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

CVEID:   CVE-2021-20265
DESCRIPTION:   Linux Kernel is vulnerable to a denial of service, caused by a flaw in the unix_stream_recvmsg function when a signal was pending. By sending a specially-crafted request, a local attacker could exploit this vulnerability to exhaust available memory.
CVSS Base score: 6.2
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/197998 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID:   CVE-2020-29661
DESCRIPTION:   Linux Kernel could allow a local attacker to execute arbitrary code on the system, caused by a locking inconsistency issue in the tty subsystem in drivers/tty/tty_jobctrl.c. By sending a specially-crafted request, an attacker could exploit this vulnerability to execute arbitrary code or cause a denial of service condition.
CVSS Base score: 8.4
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/192874 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

CVEID:   CVE-2021-33909
DESCRIPTION:   Linux Kernel could allow a local attacker to gain elevated privileges on the system, caused by an out-of-bounds write in fs/seq_file.c. By sending a specially-crafted request, an attacker could exploit this vulnerability to escalate privileges to root.
CVSS Base score: 8.4
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/205906 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)