Vulnerability Details : CVE-2021-26708
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.
Vulnerability category: Gain privilege
Exploit prediction scoring system (EPSS) score for CVE-2021-26708
Probability of exploitation activity in the next 30 days: 0.04%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 6 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-26708
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
6.9
|
MEDIUM | AV:L/AC:M/Au:N/C:C/I:C/A:C |
3.4
|
10.0
|
NIST |
|
7.0
|
HIGH | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.0
|
5.9
|
NIST |
CWE ids for CVE-2021-26708
-
The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-26708
-
http://www.openwall.com/lists/oss-security/2021/04/09/2
oss-security - Re: Linux kernel: Exploitable vulnerabilities in AF_VSOCK implementationMailing List
-
http://www.openwall.com/lists/oss-security/2021/02/05/6
oss-security - Re: Linux kernel: Exploitable vulnerabilities in AF_VSOCK implementationMailing List;Patch;Third Party Advisory
-
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c518adafa39f37858697ac9309c6cf1805581446
Patch;Vendor Advisory
-
http://www.openwall.com/lists/oss-security/2022/01/25/14
oss-security - CVE-2022-0185: Linux kernel slab out-of-bounds write: exploit and writeupMailing List
-
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.13
Release Notes;Vendor Advisory
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https://security.netapp.com/advisory/ntap-20210312-0008/
CVE-2021-26708 Linux Kernel Vulnerability in NetApp Products | NetApp Product SecurityPatch;Third Party Advisory
-
https://www.openwall.com/lists/oss-security/2021/02/04/5
oss-security - Linux kernel: Exploitable vulnerabilities in AF_VSOCK implementationMailing List;Patch;Third Party Advisory
Products affected by CVE-2021-26708
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:aff_baseboard_management_controller:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:fas_baseboard_management_controller:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:baseboard_management_controller_a250_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:baseboard_management_controller_500f_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:hci_h410c_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:*