CVE-2020-25578

Published: Mar 26, 2021

Modified: Aug 4, 2024

PUBLISHED

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.

Vendor	Product	Versions
n/a	FreeBSD	affected `FreeBSD 12.2-RELEASE before p3, 12.1-RELEASE before p13, 11.4-RELEASE before p7`

References

https://security.FreeBSD.org/advisories/FreeBSD-SA-21:01.fsdisclosure.asc

x_refsource_MISC

https://security.netapp.com/advisory/ntap-20210423-0002/

x_refsource_CONFIRM

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CVE-2020-25578

Description

Affected Products

References