QID 174772

Date Published: 2021-04-19

QID 174772: SUSE Enterprise Linux Security update for the Linux Kernel (SUSE-SU-2021:0737-1)

The SUSE Linux Enterprise 15 SP1 kernel was updated 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/008455.html to address this issue and obtain further details.
    Vendor References

    CVEs related to QID 174772

    CVE-2021-26930 | CVE-2021-26931 | CVE-2020-29368 | CVE-2021-26932 | CVE-2020-29374 |
    Software Advisories
    Advisory ID Software Component Link
    SUSE-SU-2021:0737-1 SUSE Enterprise Linux URL Logo lists.suse.com/pipermail/sle-security-updates/2021-March/008455.html
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