CVE-2020-14308
In grub2 versions before 2.06 the grub memory allocator doesn't check for possible arithmetic overflows on the requested allocation size.
Does this matter?
Lower severity and a low EPSS score (0.43%). Track it; it rarely justifies an emergency change on its own.
Description
In grub2 versions before 2.06 the grub memory allocator doesn't check for possible arithmetic overflows on the requested allocation size. This leads the function to return invalid memory allocations which can be further used to cause possible integrity, confidentiality and availability impacts during the boot process.
- CVSS 3.1
- 6.4 MEDIUMCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.43% probability · 37th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- gnu/grub2 · opensuse/leap
- Source
- secalert@redhat.com
EPSS 0.4% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.htmlMailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/07/29/3Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/17/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/17/4Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/21/1Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1852009Issue Tracking, Third Party Advisory
- https://security.gentoo.org/glsa/202104-05Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200731-0008/Third Party Advisory
- https://usn.ubuntu.com/4432-1/Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.htmlMailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/07/29/3Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/17/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/17/4Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/21/1Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1852009Issue Tracking, Third Party Advisory
- https://security.gentoo.org/glsa/202104-05Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200731-0008/Third Party Advisory
- https://usn.ubuntu.com/4432-1/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.