CVE-2021-3739

CVSS V2 Low 3.6 CVSS V3 High 7.1
Description
A NULL pointer dereference flaw was found in the btrfs_rm_device function in fs/btrfs/volumes.c in the Linux Kernel, where triggering the bug requires ‘CAP_SYS_ADMIN’. This flaw allows a local attacker to crash the system or leak kernel internal information. The highest threat from this vulnerability is to system availability.
Overview
  • CVE ID
  • CVE-2021-3739
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2022-03-10T17:43:01
  • Last Modified Date
  • 2022-06-01T20:30:33
Weakness Enumerations
CWE URL
CWE-476 http://cwe.mitre.org/data/definitions/476.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 1 OR 5.14.20
AND
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* 1 OR
AND
cpe:2.3:o:netapp:baseboard_management_controller_h300s_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:baseboard_management_controller_h300s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:baseboard_management_controller_h500s_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:baseboard_management_controller_h500s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:baseboard_management_controller_h700s_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:baseboard_management_controller_h700s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:baseboard_management_controller_h300e_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:baseboard_management_controller_h300e:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:baseboard_management_controller_h500e_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:baseboard_management_controller_h500e:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:baseboard_management_controller_h700e_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:baseboard_management_controller_h700e:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:baseboard_management_controller_h410s_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:baseboard_management_controller_h410s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:baseboard_management_controller_h410c_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:baseboard_management_controller_h410c:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:P/I:N/A:P
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 3.6
  • Severity
  • LOW
  • Exploitability Score
  • 3.9
  • Impact Score
  • 4.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 7.1
  • Base Severity
  • HIGH
  • Exploitability Score
  • 1.8
  • Impact Score
  • 5.2
References
Reference URL Reference Tags
https://ubuntu.com/security/CVE-2021-3739 Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/08/25/3 Mailing List Patch Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1997958 Issue Tracking Patch Third Party Advisory
https://github.com/torvalds/linux/commit/e4571b8c5e9ffa1e85c0c671995bd4dcc5c75091 Exploit Patch Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e4571b8c5e9ffa1e85c0c671995bd4dcc5c75091 Mailing List Patch Vendor Advisory
https://security.netapp.com/advisory/ntap-20220407-0006/
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-3739
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3739
History
Created Old Value New Value Data Type Notes
2022-05-10 06:29:10 Added to TrackCVE
2022-12-06 11:43:05 2022-03-10T17:43Z 2022-03-10T17:43:01 CVE Published Date updated
2022-12-06 11:43:05 2022-06-01T20:30:33 CVE Modified Date updated
2022-12-06 11:43:05 Analyzed Vulnerability Status updated