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SUSE: 2021:0736-1 Important: Kernel Critical Fixes for Security Issues

suse
Calendar Grey March 9, 2021
Dist Suse Esm H88
Canonical Security Update addresses 3 vulnerabilities in Ubuntu OS. Apply the update for improved security and reliability.
An update that solves 5 vulnerabilities and has 14 fixes is now available

Summary

The SUSE Linux Enterprise 12 SP4 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). by remote attackers to read or write files via directory traversal in an XCOPY request (bsc#178372). - CVE-2020-29368,CVE-2020-29374: Fixed an issue in copy-on-write implementation which could have granted unintended write access because of a race condition in a THP mapcount check (bsc#1179660, bsc#1179428). The following non-security bugs were fixed:

Topics%20covered

Topics Covered

security advisory critical bug fix kernel SUSE error handling Linux patch

References

#1065600 #1163592 #1176831 #1178401 #1178762

#1179014 #1179015 #1179045 #1179082 #1179428

#1179660 #1180058 #1180906 #1181441 #1181747

#1181753 #1181843 #1182140 #1182175

Cross- CVE-2020-29368 CVE-2020-29374 CVE-2021-26930

CVE-2021-26931 CVE-2021-26932

CVSS scores:

CVE-2020-29368 (NVD) : 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2020-29368 (SUSE): 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2020-29374 (NVD) : 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2020-29374 (SUSE): 6.7 CVSS:3.1/AV:L/AC:H/PR:N/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

Severity
important
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Announcement ID: SUSE-SU-2021:0736-1
Rating: important

Topics%20covered

Topics Covered

security advisory critical bug fix kernel SUSE error handling Linux patch

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