QID 174950

QID 174950: SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 21 for SLE 15) (SUSE-SU-2021:1344-1)

This update for the Linux Kernel 4.12.14-150_63 fixes several issues.

The following security issues were fixed:

- CVE-2021-3444: Fixed an issue with the bpf verifier which did not
properly handle mod32 destination register truncation when the source
register was known to be 0 leading to out of bounds read (bsc#1184171).
- CVE-2021-28688: Fixed an issue introduced by XSA-365 (bsc##1182294,
bsc#1183646).
- CVE-2021-26930: Fixed an improper error handling in blkback's grant
mapping (XSA-365 bsc#1182294).
- CVE-2021-26931: Fixed an issue where Linux kernel was treating grant
mapping errors as bugs (XSA-362 bsc#1183022).

Successful exploitation allows attacker to compromise the system.

  • CVSS V3 rated as High - 7.8 severity.
  • CVSS V2 rated as Medium - 4.6 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: SUSE-SU-2021:1344-1 to address this issue and obtain further details.
    Vendor References

    CVEs related to QID 174950

    CVE-2021-28688 | CVE-2021-26931 | CVE-2021-26930 | CVE-2021-3444 |
    Software Advisories
    Advisory ID Software Component Link
    SUSE-SU-2021:1344-1 SUSE Enterprise Linux URL Logo lists.suse.com/pipermail/sle-security-updates/2021-April/008683.html
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