CVE-2020-10711 (GCVE-0-2020-10711)

Vulnerability from cvelistv5 – Published: 2020-05-22 14:09 – Updated: 2024-08-04 11:14
VLAI?
Summary
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.
Severity ?
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
Assigner
References
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… x_refsource_CONFIRM
https://www.openwall.com/lists/oss-security/2020/… x_refsource_CONFIRM
https://security.netapp.com/advisory/ntap-2020060… x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2020… mailing-listx_refsource_MLIST
https://www.debian.org/security/2020/dsa-4698 vendor-advisoryx_refsource_DEBIAN
https://www.debian.org/security/2020/dsa-4699 vendor-advisoryx_refsource_DEBIAN
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://usn.ubuntu.com/4413-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4411-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4412-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4419-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4414-1/ vendor-advisoryx_refsource_UBUNTU
Impacted products
Vendor Product Version
Red Hat Kernel Affected: all kernel versions before 5.7
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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