Vulnerability Monitor

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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.

Published

2021-02-05T14:15:18.780

Last Modified

2024-11-21T05:56:42.880

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.0 (HIGH)

CVSSv2 Vector

AV:L/AC:M/Au:N/C:C/I:C/A:C

Access Vector: LOCAL
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

3.4

Impact Score

10.0

Weaknesses

Type: Primary
CWE-667

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	< 5.10.13	Yes
Application	netapp	aff_baseboard_management_controller	-	Yes
Application	netapp	cloud_backup	-	Yes
Application	netapp	fas_baseboard_management_controller	-	Yes
Application	netapp	solidfire_\&_hci_management_node	-	Yes
Application	netapp	solidfire_baseboard_management_controller	-	Yes
Operating System	netapp	baseboard_management_controller_500f_firmware	< 15.3	Yes
Hardware	netapp	500f	-	No
Operating System	netapp	baseboard_management_controller_a250_firmware	< 15.3	Yes
Hardware	netapp	a250	-	No
Operating System	netapp	hci_h410c_firmware	-	Yes
Hardware	netapp	hci_h410c	-	No

References

http://www.openwall.com/lists/oss-security/2021/02/05/6 Mailing List, Patch, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/04/09/2 Mailing List ([email protected])
http://www.openwall.com/lists/oss-security/2022/01/25/14 Mailing List ([email protected])
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.13 Release Notes, Vendor Advisory ([email protected])
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c518adafa39f37858697ac9309c6cf1805581446 Patch, Vendor Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20210312-0008/ Patch, Third Party Advisory ([email protected])
https://www.openwall.com/lists/oss-security/2021/02/04/5 Mailing List, Patch, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/02/05/6 Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/04/09/2 Mailing List (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2022/01/25/14 Mailing List (af854a3a-2127-422b-91ae-364da2661108)
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.13 Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c518adafa39f37858697ac9309c6cf1805581446 Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20210312-0008/ Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.openwall.com/lists/oss-security/2021/02/04/5 Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)