CVE-2020-10711
This flaw allows a remote network user to crash the system kernel, resulting in a denial of service.
Does this matter?
Lower severity and a low EPSS score (3.10%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 3.10% probability · 87th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel · redhat/3scale · redhat/openstack · redhat/virtualization host · redhat/enterprise linux · redhat/enterprise linux aus · redhat/enterprise linux server tus · redhat/messaging realtime grid · debian/debian linux · opensuse/leap · canonical/ubuntu linux
- Source
- secalert@redhat.com
References
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.htmlMailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10711Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00012.htmlThird Party Advisory
- https://security.netapp.com/advisory/ntap-20200608-0001/Third Party Advisory
- https://usn.ubuntu.com/4411-1/Third Party Advisory
- https://usn.ubuntu.com/4412-1/Third Party Advisory
- https://usn.ubuntu.com/4413-1/Third Party Advisory
- https://usn.ubuntu.com/4414-1/Third Party Advisory
- https://usn.ubuntu.com/4419-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4698Third Party Advisory
- https://www.debian.org/security/2020/dsa-4699Third Party Advisory
- https://www.openwall.com/lists/oss-security/2020/05/12/2Mailing List, Patch, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.htmlMailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10711Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00012.htmlThird Party Advisory
- https://security.netapp.com/advisory/ntap-20200608-0001/Third Party Advisory
- https://usn.ubuntu.com/4411-1/Third Party Advisory
- https://usn.ubuntu.com/4412-1/Third Party Advisory
- https://usn.ubuntu.com/4413-1/Third Party Advisory
- https://usn.ubuntu.com/4414-1/Third Party Advisory
- https://usn.ubuntu.com/4419-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4698Third Party Advisory
- https://www.debian.org/security/2020/dsa-4699Third Party Advisory
- https://www.openwall.com/lists/oss-security/2020/05/12/2Mailing List, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.