| Name | CVE-2023-49298 |
| Description | OpenZFS through 2.1.13 and 2.2.x through 2.2.1, in certain scenarios involving applications that try to rely on efficient copying of file data, can replace file contents with zero-valued bytes and thus potentially disable security mechanisms. NOTE: this issue is not always security related, but can be security related in realistic situations. A possible example is cp, from a recent GNU Core Utilities (coreutils) version, when attempting to preserve a rule set for denying unauthorized access. (One might use cp when configuring access control, such as with the /etc/hosts.deny file specified in the IBM Support reference.) NOTE: this issue occurs less often in version 2.2.1, and in versions before 2.1.4, because of the default configuration in those versions. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3766-1 |
| Debian Bugs | 1056752 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| zfs-linux (PTS) | stretch/contrib | 0.6.5.9-5 | vulnerable |
| buster/contrib (security), buster/contrib | 0.7.12-2+deb10u3 | fixed | |
| bullseye/contrib | 2.0.3-9+deb11u1 | vulnerable | |
| bookworm/contrib | 2.1.11-1 | vulnerable | |
| sid/contrib, trixie/contrib | 2.2.6-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| zfs-linux | source | buster | 0.7.12-2+deb10u3 | DLA-3766-1 | ||
| zfs-linux | source | (unstable) | 2.1.14-1 | 1056752 |
[bookworm] - zfs-linux <no-dsa> (contrib not supported)
[bullseye] - zfs-linux <no-dsa> (contrib not supported)
https://github.com/openzfs/zfs/issues/15526
https://github.com/openzfs/zfs/pull/15571