ALPINE-CVE-2021-20254
- Source
- https://security.alpinelinux.org/vuln/CVE-2021-20254
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-20254.json
- JSON Data
- https://api.osv.dev/v1/vulns/ALPINE-CVE-2021-20254
- Upstream
- Published
- 2021-05-05T14:15:07Z
- Modified
- 2026-08-27T22:18:01Z
- Severity
-
- 6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
A flaw was found in samba. The Samba smbd file server must map Windows group identities (SIDs) into unix group ids (gids). The code that performs this had a flaw that could allow it to read data beyond the end of the array in the case where a negative cache entry had been added to the mapping cache. This could cause the calling code to return those values into the process token that stores the group membership for a user. The highest threat from this vulnerability is to data confidentiality and integrity.
- References