QID 174875

Date Published: 2021-04-08

QID 174875: SUSE Enterprise Linux Security Update for xen (SUSE-SU-2021:1023-1)

This update for xen fixes the following issues:

- CVE-2021-3308: VUL-0: xen: IRQ vector leak on x86 (bsc#1181254, XSA-360)
- CVE-2021-28687: VUL-0: xen: HVM soft-reset crashes toolstack
(bsc#1183072, XSA-368)
- CVE-2021-20257: VUL-0: xen: infinite loop issue in the e1000 NIC
emulator (bsc#1182846)
- CVE-2020-28368: VUL-0: xen: Intel RAPL sidechannel attack aka PLATYPUS
attack aka (bsc#1178591, XSA-351)
- L3: conring size for XEN HV's with huge memory to small. Inital Xen logs
cut (bsc#1177204)
- Kdump of HVM fails, soft-reset not handled by libxl (bsc#1179148)
- OpenQA job causes libvirtd to dump core when running kdump inside domain
(bsc#1181989)
- Allow restart of xenwatchdogd, enable tuning of keep-alive interval and
timeout
options via XENWATCHDOGD_ARGS= (bsc#1178736)
- The receiving side did detect holes in a to-be-allocated superpage, but
allocated a superpage anyway. This resulted to over-allocation
(bsc#1177112)
- The receiving side may punch holes incorrectly into optimistically
allocated superpages. Also reduce overhead in bitmap handling
(bsc#1177112)
- Upstream bug fixes (bsc#1027519)

Successful exploitation allows attacker to compromise the system.

  • CVSS V3 rated as Medium - 5.5 severity.
  • CVSS V2 rated as Low - 2.1 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-2021:1023-1 to address this issue and obtain further details.
    Vendor References

    CVEs related to QID 174875

    CVE-2021-3308 | CVE-2020-28368 | CVE-2021-28687 | CVE-2021-20257 |
    Software Advisories
    Advisory ID Software Component Link
    SUSE-SU-2021:1023-1 SUSE Enterprise Linux URL Logo lists.suse.com/pipermail/sle-security-updates/2021-April/008585.html
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