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SUSE Linux Enterprise 12-SP2: 2021:0744-1 Important: Kernel Access Issues

suse
Calendar Grey March 9, 2021
Dist Suse Esm H88
Debian OS Kernel refresh resolves several vulnerabilities, ensuring critical improvements. Maintain safety through the newest updates.
An update that solves four vulnerabilities and has one errata is now available

Summary

The SUSE Linux Enterprise 12 SP2 kernel was updated to receive various security and bugfixes. The following security bugs were fixed: - CVE-2021-26930: Fixed an improper error handling in blkback's grant mapping (XSA-365 bsc#1181843). - CVE-2021-26931: Fixed an issue where Linux kernel was treating grant mapping errors as bugs (XSA-362 bsc#1181753). - CVE-2021-26932: Fixed improper error handling issues in Linux grant mapping (XSA-361 bsc#1181747). - CVE-2020-28374: Fixed insufficient identifier checking in the LIO SCSI target code which could have been used by remote attackers to read or write files via directory traversal in an XCOPY request (bsc#178372). The following non-security bug was fixed: - xen/netback: fix spurious event detection for common event case (bsc#1182175).

Topics%20covered

Topics Covered

security advisory security issue bug fix remote access important SUSE Linux Kernel

References

#1178372 #1181747 #1181753 #1181843 #1182175

Cross- CVE-2020-28374 CVE-2021-26930 CVE-2021-26931

CVE-2021-26932

CVSS scores:

CVE-2020-28374 (NVD) : 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVE-2020-28374 (SUSE): 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVE-2021-26930 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2021-26930 (SUSE): 7.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

CVE-2021-26931 (NVD) : 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVE-2021-26931 (SUSE): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

CVE-2021-26932 (NVD) : 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVE-2021-26932 (SUSE): 5.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

Affected Products:

SUSE OpenStack Cloud 7

Severity
important
Lowest
Low
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Critical

Announcement ID: SUSE-SU-2021:0744-1
Rating: important

Topics%20covered

Topics Covered

security advisory security issue bug fix remote access important SUSE Linux Kernel

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