QID 174774

Date Published: 2021-04-19

QID 174774: SUSE Enterprise Linux Security update for the Linux Kernel (SUSE-SU-2021:0740-1)

The SUSE Linux Enterprise 15 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).

Successful exploitation allows attacker to compromise the system.

CVSS V3 rated as High - 7.8 severity.

CVSS V2 rated as High - 6.9 severity.

Solution

Upgrade to the latest package which contains the patch. To install this SUSE Security Update use YaST online_update. Alternatively you can run the command listed for your product. To install packages using the command line interface, use command "yum update". Refer to Suse security advisory: https://lists.suse.com/pipermail/sle-security-updates/2021-March/008458.html to address this issue and obtain further details.

Vendor References

SUSE-SU-2021:0740-1 - lists.suse.com/pipermail/sle-security-updates/2021-March/008458.html

CVEs related to QID 174774

CVE-2021-26930 | CVE-2021-26931 | CVE-2020-29368 | CVE-2021-26932 | CVE-2020-29374 |

Software Advisories

Advisory ID	Software	Component	Link
SUSE-SU-2021:0740-1	SUSE Enterprise Linux		lists.suse.com/pipermail/sle-security-updates/2021-March/008458.html

By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].