[Pkg-zfsonlinux-devel] Bug#1056752: zfs-linux: CVE-2023-49298

[Salvatore Bonaccorso]

Source: zfs-linux
Version: 2.1.13-1
Severity: important
Tags: security upstream
Forwarded: https://github.com/openzfs/zfs/issues/15526
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for zfs-linux.

CVE-2023-49298[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2023-49298
    https://www.cve.org/CVERecord?id=CVE-2023-49298
[1] https://github.com/openzfs/zfs/issues/15526
[2] https://github.com/openzfs/zfs/pull/15571

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore