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SUSE: 2021:0743-1 Important Security Fixes: Kernel Update

suse
Calendar Grey March 9, 2021
Dist Suse Esm H88
Critical security patch released for SUSE Linux Kernel tackling identified weaknesses, mandates system restart following installation.
An update that solves four vulnerabilities and has two fixes is now available

Summary

The SUSE Linux Enterprise 12 SP3 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 bugs were fixed: - cifs: report error instead of invalid when revalidating a dentry fails (bsc#1177440).

Topics%20covered

Topics Covered

security advisory bug fix important kernel SUSE system reboot

References

#1177440 #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:

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2021:0743-1
Rating: important

Topics%20covered

Topics Covered

security advisory bug fix important kernel SUSE system reboot

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