RHSA-2022:7700 - Security Advisory

Topic

An update for gdisk is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The gdisk packages provide the gdisk partitioning utility for GUID Partition Table (GPT) disks. The utility features a command-line interface similar to fdisk, direct manipulation of partition table structures, recovery tools to deal with corrupt partition tables, and the ability to convert Master Boot Record (MBR) disks to the GPT format.

Security Fix(es):

• gdisk: possible out-of-bounds-write in LoadPartitionTable of gpt.cc (CVE-2020-0256)
• gdisk: possible out-of-bounds-write in ReadLogicalParts of basicmbr.cc (CVE-2021-0308)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.7 Release Notes linked from the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.8 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.8 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.8 ppc64le
• Red Hat Enterprise Linux Server - TUS 8.8 x86_64
• Red Hat Enterprise Linux for ARM 64 8 aarch64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.8 aarch64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.8 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.8 x86_64

Fixes

• BZ - 2051939 - CVE-2020-0256 gdisk: possible out-of-bounds-write in LoadPartitionTable of gpt.cc
• BZ - 2051943 - CVE-2021-0308 gdisk: possible out-of-bounds-write in ReadLogicalParts of basicmbr.cc
• BZ - 2065205 - gptfdisk naming of paritions does not work for big endian systems [rhel-8.7.0]

CVEs

• CVE-2020-0256
• CVE-2021-0308

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.7_release_notes/index