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Fencer Vulns
medium 6.8

CVE-2021-0308 json

In ReadLogicalParts of basicmbr.cc, there is a possible out of bounds write due to a missing bounds check.

published 2021-01-11 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-2927

cvss
6.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 39%
public exploits
0
none known

Summary

In ReadLogicalParts of basicmbr.cc, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-8.1, Android-9, Android-10, Android-11, Android-8.0; Android ID: A-158063095.

Patch / fix

  • gdisk Debian 14, Debian 13, Debian 12 1.0.6-1

debian advisories DEBIAN-CVE-2021-0308

  • gdisk Ubuntu Pro 16.04 LTS 1.0.1-1ubuntu0.1~esm2

ubuntu advisories UBUNTU-CVE-2021-0308

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • gdisk RHEL 8 1.0.3-11.el8
  • gdisk RHEL 8.6 EUS 1.0.3-9.el8_6.1

red hat advisories RHSA-2024:3486RHSA-2022:7700

  • gptfdisk openSUSE Tumbleweed 1.0.8-1.2

opensuse advisories openSUSE-SU-2024:10816-1

  • gdisk AlmaLinux 8 1.0.3-11.el8

almalinux advisories ALSA-2022:7700

  • gdisk Rocky Linux 8 1.0.3-11.el8

rocky linux advisories RLSA-2022:7700

  • gptfdisk Alpine 3.24, Alpine 3.23, Alpine 3.22 +10 more 1.0.6-r0

alpine advisories ALPINE-CVE-2021-0308

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • gptfdisk Arch Linux 1.0.6-1

arch linux advisories AVG-1435

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-0308 updated cvss 6.8

gdisk: possible out-of-bounds-write in ReadLogicalParts of basicmbr.cc

  • Red Hat Enterprise Linux 6 gdisk Red Hat Enterprise Linux 7 gdisk
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux BaseOS (v. 8) gdisk 1.0.3-11.el8
    fixed: vendor fix RHSA-2022:7700
  • Red Hat Enterprise Linux BaseOS EUS (v.8.6) gdisk 1.0.3-9.el8_6.1
    fixed: vendor fix RHSA-2024:3486
  • Red Hat Enterprise Linux 9 gdisk
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 6.8 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • n/a Android

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.