CVE-2020-25578 | BDVDB-2026-150993 Detail

FreeBSD

Description#

In FreeBSD 12.2-STABLE before r368969, 11.4-STABLE before r369047, 12.2-RELEASE before p3, 12.1-RELEASE before p13 and 11.4-RELEASE before p7 several file systems were not properly initializing the d_off field of the dirent structures returned by VOP_READDIR. In particular, tmpfs(5), smbfs(5), autofs(5) and mqueuefs(5) were failing to do so. As a result, eight uninitialized kernel stack bytes may be leaked to userspace by these file systems.

Impact#

No impact statement in the source data.

Weaknesses#

No weakness recorded in the source data.

References#

https://security.FreeBSD.org/advisories/FreeBSD-SA-21:01.fsdisclosure.asc
https://security.netapp.com/advisory/ntap-20210423-0002/

Exploit#

No public exploit known

History#

Version 12021-03-26Record published in the CVE List.
Version 22024-08-04Most recent update recorded in the CVE List.