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SUSE Linux Enterprise Live Patching 12 SP5 Important: Code Execution

suse
Calendar Grey March 17, 2021
Dist Suse Esm H88
SUSE has issued a vital security patch tackling severe kernel vulnerabilities in Live Patch 5 for SLE 12 SP5, enhancing overall system security.
An update that fixes 5 vulnerabilities is now available

Summary

This update for the Linux Kernel 4.12.14-122_23 fixes several issues. The following security issues were fixed: - CVE-2020-29368: 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#1179664). - CVE-2021-3347: Fixed a use-after-free in the PI futexes during fault handling, allowing local users to execute code in the kernel (bsc#1181553). - CVE-2020-27786: Fixed a potential user after free which could have led to memory corruption or privilege escalation (bsc#1179616). - 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#1178684).

Topics%20covered

Topics Covered

security advisory memory corruption important kernel execution SUSE Linux Enterprise live patching

References

#1178684 #1179616 #1179664 #1180859 #1181553

Cross- CVE-2020-27786 CVE-2020-28374 CVE-2020-29368

CVE-2021-0342 CVE-2021-3347

CVSS scores:

CVE-2020-27786 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2020-27786 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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-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-2021-0342 (NVD) : 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVE-2021-0342 (SUSE): 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity
important
Lowest
Low
Medium
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Critical

Announcement ID: SUSE-SU-2021:0818-1
Rating: important

Topics%20covered

Topics Covered

security advisory memory corruption important kernel execution SUSE Linux Enterprise live patching

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