QID 751103

Date Published: 2021-09-08

QID 751103: SUSE Enterprise Linux Security Update for xen (SUSE-SU-2021:2957-1)

This update for xen fixes the following issues: - cve-2021-3594: slirp: invalid pointer initialization may lead to information disclosure (udp)(bsc#1187378).
- cve-2021-3595: slirp: invalid pointer initialization may lead to information disclosure (tftp)(bsc#1187376).
- cve-2021-28698: long running loops in grant table handling (xsa-380)(bsc#1189378).
- cve-2021-28699: inadequate grant-v2 status frames array bounds check (xsa-382)(bsc#1189380).
- cve-2021-20255: fixed stack overflow via infinite recursion in eepro100 (bsc#1182654) - cve-2021-28690: xen: x86: tsx async abort protections not restored after s3 (bsc#1186434) - cve-2021-28692: xen: inappropriate x86 iommu timeout detection / handling (bsc#1186429) - cve-2021-28694,cve-2021-28695,cve-2021-28696: iommu page mapping issues on x86 (xsa-378)(bsc#1189373).
- cve-2021-0089: xen: speculative code store bypass (bsc#1186433) - cve-2021-28697: grant table v2 status pages may remain accessible after de-allocation (xsa-379)(bsc#1189376).
- cve-2021-3592: slirp: invalid pointer initialization may lead to information disclosure (bootp)(bsc#1187369).
- prevent superpage allocation in the lapic and acpi_info range (bsc#1189882).


Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation allows attacker to compromise the system.

  • CVSS V3 rated as High - 7.8 severity.
  • CVSS V2 rated as Medium - 5.6 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-2021:2957-1 to address this issue and obtain further details.
    Vendor References

    CVEs related to QID 751103

    CVE-2021-0089 | CVE-2021-20255 | CVE-2021-28697 | CVE-2021-28698 | CVE-2021-28699 | CVE-2021-3595 | CVE-2021-28695 | CVE-2021-3592 | CVE-2021-3594 | CVE-2021-28692 | CVE-2021-28696 | CVE-2021-28690 | CVE-2021-28694 |
    Software Advisories
    Advisory ID Software Component Link
    SUSE-SU-2021:2957-1 SUSE Enterprise Linux URL Logo lists.suse.com/pipermail/sle-security-updates/2021-September/009414.html
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