High severity · published Feb 5, 2021
CVE-2021-26708
A local privilege escalation was discovered in the Linux kernel before 5.10.13
7.0
CVSS
1.6%
EPSS
No
On KEV
Description
A local privilege escalation was discovered in the Linux kernel before 5.10.13. Multiple race conditions in the AF_VSOCK implementation are caused by wrong locking in net/vmw_vsock/af_vsock.c. The race conditions were implicitly introduced in the commits that added VSOCK multi-transport support.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 76% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
5.5 before 5.10.13 · source: NVD
AB
Aff Baseboard Management Controller · Netapp
All versions, or not specified · source: NVD
BM
Baseboard Management Controller 500f Firmware · Netapp
before 15.3 · source: NVD
BM
Baseboard Management Controller A250 Firmware · Netapp
before 15.3 · source: NVD
CB
Cloud Backup · Netapp
All versions, or not specified · source: NVD
FB
Fas Baseboard Management Controller · Netapp
All versions, or not specified · source: NVD
HH
Hci H410c Firmware · Netapp
All versions, or not specified · source: NVD
SH
Solidfire & Hci Management Node · Netapp
All versions, or not specified · source: NVD
SB
Solidfire Baseboard Management Controller · Netapp
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26708
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26708
Mailing List
http://www.openwall.com/lists/oss-security/2021/02/05/6
Mailing List
http://www.openwall.com/lists/oss-security/2021/04/09/2
Mailing List
http://www.openwall.com/lists/oss-security/2022/01/25/14
Release Notes
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.13
Patch
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c518adafa39f37858697ac9309c6cf1805581446
Patch
https://security.netapp.com/advisory/ntap-20210312-0008/
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