Security Bulletin
Summary
POWER9: In response to a denial of service vulnerability, a new Power Systems firmware update is being released to address Common Vulnerabilities and Exposures issue number CVE-2018-5390.
Vulnerability Details
CVEID: CVE-2018-5390
DESCRIPTION: Linux Kernel is vulnerable to a denial of service, caused by an error in the tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() functions. By sending specially crafted packets within ongoing TCP sessions, a remote attacker could exploit this vulnerability to cause a denial of service.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/147950 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
DESCRIPTION: Linux Kernel is vulnerable to a denial of service, caused by an error in the tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() functions. By sending specially crafted packets within ongoing TCP sessions, a remote attacker could exploit this vulnerability to cause a denial of service.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/147950 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Affected Products and Versions
Firmware release FW910 and FW920 are affected.
Remediation/Fixes
Customers with the products below, install FW910.30
1) IBM Power Systems S922 (9009-22A)
2) IBM Power Systems H922 (9223-22H)
3) IBM Power Systems S914 (9009-41A)
4) IBM Power Systems S924 (9009-42A)
5) IBM Power Systems H924 (9223-42H)
6) IBM Power Systems L922 (9008-22L)
2) IBM Power Systems H922 (9223-22H)
3) IBM Power Systems S914 (9009-41A)
4) IBM Power Systems S924 (9009-42A)
5) IBM Power Systems H924 (9223-42H)
6) IBM Power Systems L922 (9008-22L)
Customers with the products below, install FW920.30
1) IBM Power Systems E950(9040-MR9)
2) IBM Power Systems E980(9080-M9S)
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References
Off
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Document Location
Worldwide
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Document Information
Modified date:
07 December 2021
UID
ibm10875814