Resource exhaustion in Linux Kernel
CVE-2021-28038
An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV. A certain part of the netback driver lacks necessary treatment of errors such as failed memory allocations (as a result of changes to the handling of grant mapping errors). A host OS denial of service may occur during misbehavior of a networking frontend driver. NOTE: this issue exists because of an incomplete fix for CVE-2021-26931.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.007 (51.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Linux Kernel — versions 5.12
- NetApp Cloud Backup
- NetApp Solidfire Baseboard Management Controller Firmware
- Debian Linux — versions 9.0
Weakness classification (CWE)
References
- xenbits.xen.org/xsa/advisory-367.html (Patch, Vendor Advisory)
- www.openwall.com/lists/oss-security/2021/03/05/1 (mailing-list, Patch, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/03/msg00010.html (mailing-list, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/03/msg00035.html (mailing-list, Third Party Advisory)
- security.netapp.com/advisory/ntap-20210409-0001/ (Third Party Advisory)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/
Frequently asked questions
- What is CVE-2021-28038?
- CVE-2021-28038 is a medium-severity vulnerability in Linux Kernel, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2021-03-05.
- How severe is CVE-2021-28038?
- Medium severity. CVSS v3 base score is 6.5 out of 10.