CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
81.7%
A NULL pointer dereference flaw was found in the Linux kernel’s SELinux subsystem in versions before 5.7. This flaw occurs while importing the Commercial IP Security Option (CIPSO) protocol’s category bitmap into the SELinux extensible bitmap via the’ ebitmap_netlbl_import’ routine. While processing the CIPSO restricted bitmap tag in the ‘cipso_v4_parsetag_rbm’ routine, it sets the security attribute to indicate that the category bitmap is present, even if it has not been allocated. This issue leads to a NULL pointer dereference issue while importing the same category bitmap into SELinux. This flaw allows a remote network user to crash the system kernel, resulting in a denial of service.
[
{
"product": "Kernel",
"vendor": "Red Hat",
"versions": [
{
"status": "affected",
"version": "all kernel versions before 5.7"
}
]
}
]
lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html
lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html
bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10711
lists.debian.org/debian-lts-announce/2020/06/msg00012.html
security.netapp.com/advisory/ntap-20200608-0001/
usn.ubuntu.com/4411-1/
usn.ubuntu.com/4412-1/
usn.ubuntu.com/4413-1/
usn.ubuntu.com/4414-1/
usn.ubuntu.com/4419-1/
www.debian.org/security/2020/dsa-4698
www.debian.org/security/2020/dsa-4699
www.openwall.com/lists/oss-security/2020/05/12/2
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
81.7%