Veracode Vulnerability DatabaseVERACODE:30858Privilege Escalation
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.6 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
kernel is vulnerable to privilege escalation. A use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c due to the CIPSO and CALIPSO refcounting for the DOI definitions are mishandled, leading to writing of an arbitrary value.
References
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.14
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.7
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1165affd484889d4986cf3b724318935a0b120d8
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ad5d07f4a9cd671233ae20983848874731102c08
git.launchpad.net/ubuntu-cve-tracker/tree/active/CVE-2021-33033
sites.google.com/view/syzscope/kasan-use-after-free-read-in-cipso_v4_genopt
syzkaller.appspot.com/bug?id=96e7d345748d8814901c91cd92084ed04b46701e
Related
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.6 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P