CVE-2020-27675

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.27% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 19.0% of scored records. A rank, not a probability.

NVD base score

4.7 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2020-10-22 20:32Z5 YR AGO

Last updated

2024-08-04 16:18Z2 YR AGO

Reserved

2020-10-22

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class
• CWE-416Use After FreeVariant
• CWE-476NULL Pointer DereferenceBase
• CWE-825Expired Pointer DereferenceBase

Data version

5.1

Document digest

b36aa294eede87aa1fe7cb416c4ac1532dfa5e3268236ebba768ff64e75a8e8d

• xenbits.xen.orghttps://xenbits.xen.org/xsa/advisory-331.htmlx_refsource_MISC
• github.comhttps://github.com/torvalds/linux/commit/073d0552ead5bfc7a3a9c01de590e924f11b5dd2x_refsource_MISC
• git.kernel.orghttps://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=073d0552ead5bfc7a3a9c01de590e924f11b5dd2x_refsource_MISC
• lists.fedoraproject.orgFEDORA-2020-474d747b60https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3ZG6TZLD23QO3PV2AN2HB625ZX47ALTT/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2020-09e4d062fehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6USZ4APZSBQDHGJLJMHW5JBN4QZV6SKZ/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2020-920a258c79https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GNF2R7FUT4IOJ2RIRGQ7X5R4F4FVVLSR/vendor-advisoryx_refsource_FEDORA
• security.gentoo.orgGLSA-202011-06https://security.gentoo.org/glsa/202011-06vendor-advisoryx_refsource_GENTOO
• lists.debian.org[debian-lts-announce] 20201210 [SECURITY] [DLA 2483-1] linux-4.19 security updatehttps://lists.debian.org/debian-lts-announce/2020/12/msg00015.htmlmailing-listx_refsource_MLIST
• lists.debian.org[debian-lts-announce] 20201218 [SECURITY] [DLA 2494-1] linux security updatehttps://lists.debian.org/debian-lts-announce/2020/12/msg00027.htmlmailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20210119 Xen Security Advisory 331 v3 (CVE-2020-27675) - Race condition in Linux event handler may crash dom0http://www.openwall.com/lists/oss-security/2021/01/19/3mailing-listx_refsource_MLIST