Security Bulletin: Multiple Linux Kernel vulnerabilities affects IBM Storage Scale System.

Summary

There are multiple vulnerabilities in the Linux Kernel, used by IBM Storage Scale System, which could allow a denial of service. Fixes for these vulnerabilities are available. CVE-2023-5178, CVE-2023-3609, CVE-2023-45871, CVE-2023-4732, CVE-2023-1192.

Vulnerability Details

CVEID:CVE-2023-5178
**DESCRIPTION:**Linux Kernel could allow a remote attacker to execute arbitrary code on the system, caused by a use-after-free flaw in the nvmet_tcp_free_crypto function in the NVMe-oF/TCP subsystem. By sending a specially crafted request, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 8.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/268699 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

CVEID:CVE-2023-3609
**DESCRIPTION:**Linux Kernel could allow a local authenticated attacker to gain elevated privileges on the system, caused by a use-after-free flaw in the net/sched: cls_u32 component. By sending a specially crafted request using the reference counter, an authenticated attacker could exploit this vulnerability to gain elevated privileges.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/261407 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-2023-45871
**DESCRIPTION:**Linux Kernel is vulnerable to a buffer overflow, caused by improper bounds checking by the IGB driver in drivers/net/ethernet/intel/igb/igb_main.c. By sending a specially crafted request, a remote attacker could overflow a buffer and execute arbitrary code or cause a denial of service condition on the system.
CVSS Base score: 9.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/268717 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

CVEID:CVE-2023-4732
**DESCRIPTION:**Linux Kernel is vulnerable to a denial of service, caused by a race condition between task migrating pages and another task calling exit_mmap to release those same pages getting invalid opcode BUG in include/linux/swapops.h in the memory management subsytem. A local authenticated attacker could exploit this vulnerability to cause a denial of service.
CVSS Base score: 4.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/267576 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)

CVEID:CVE-2023-1192
**DESCRIPTION:**Linux Kernel is vulnerable to a denial of service, caused by a use-after-free flaw in the smb2_is_status_io_timeout() function in CIFS . By sending a specially crafted system call, a remote authenticated attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/270454 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Remediation/Fixes

IBM recommends that you fix this vulnerability by upgrading affected versions of IBM Storage Scale System 3000, 3200, 3500 and 5000 to the following code levels or higher:

V6.1.2.9:

https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=Software%20defined%20storage&product=ibm/StorageSoftware/IBM+Elastic+Storage+Server+(ESS)&release=6.1.0&platform=All&function=all

V6.1.9.2 or later:

https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=Software%20defined%20storage&product=ibm/StorageSoftware/IBM+Storage+Scale+System&release=6.1.9&platform=All&function=all

Workarounds and Mitigations

None