VulnerabilityModified
CVE-2021-28039
In some less-common configurations, an x86 PV guest OS user can crash a Dom0 or driver domain via a large amount of I/O activity.
MEDIUM 6.5EPSS 0.42%
Does this matter?
Lower severity and a low EPSS score (0.42%). Track it; it rarely justifies an emergency change on its own.
Description
An issue was discovered in the Linux kernel 5.9.x through 5.11.3, as used with Xen. In some less-common configurations, an x86 PV guest OS user can crash a Dom0 or driver domain via a large amount of I/O activity. The issue relates to misuse of guest physical addresses when a configuration has CONFIG_XEN_UNPOPULATED_ALLOC but not CONFIG_XEN_BALLOON_MEMORY_HOTPLUG.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
- EPSS
- 0.42% probability · 36th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-131
- Affected
- linux/linux kernel · xen/xen · netapp/cloud backup · netapp/solidfire baseboard management controller firmware
- Source
- cve@mitre.org
References
- http://www.openwall.com/lists/oss-security/2021/03/05/2Mailing List, Patch, Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-369.htmlPatch, Vendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=882213990d32fd224340a4533f6318dd152be4b2
- https://security.netapp.com/advisory/ntap-20210409-0001/Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/03/05/2Mailing List, Patch, Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-369.htmlPatch, Vendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=882213990d32fd224340a4533f6318dd152be4b2
- https://security.netapp.com/advisory/ntap-20210409-0001/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.