Medium severity · published Mar 5, 2021
CVE-2021-28038
An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV
6.5
CVSS
0.7%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
2.6.39 before 4.4.260; 4.5.0 before 4.9.260; 4.10.0 before 4.14.224; 4.15.0 before 4.19.179; 4.20.0 before 5.4.103; 5.10.0 before 5.10.21; +3 more · source: NVD
CB
Cloud Backup · Netapp
All versions, or not specified · source: NVD
DL
Debian Linux · Debian
9.0 · source: NVD
SB
Solidfire Baseboard Management Controller Firmware · Netapp
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-28038
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-28038
Mailing List
http://www.openwall.com/lists/oss-security/2021/03/05/1
Patch
http://xenbits.xen.org/xsa/advisory-367.html
git.kernel.org
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2991397d23ec597405b116d96de3813420bdcbc3
Mailing List
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210409-0001/
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