Hi,

The following vulnerability was published for ceph.

CVE-2025-52555[0]:
| Ceph is a distributed object, block, and file storage platform. In
| versions 17.2.7, 18.2.1 through 18.2.4, and 19.0.0 through 19.2.2,
| an unprivileged user can escalate to root privileges in a ceph-fuse
| mounted CephFS by chmod 777 a directory owned by root to gain
| access. The result of this is that a user could read, write and
| execute to any directory owned by root as long as they chmod 777 it.
| This impacts confidentiality, integrity, and availability. It is
| patched in versions 17.2.8, 18.2.5, and 19.2.3.


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-2025-52555
https://www.cve.org/CVERecord?id=CVE-2025-52555
[1] https://bugzilla.redhat.com/show_bug.cgi?id=2374412
[2] https://www.openwall.com/lists/oss-security/2025/06/26/1
[3] https://github.com/ceph/ceph/pull/60314
[4] https://github.com/ceph/ceph/security/advisories/GHSA-89hm-qq33-2fjm

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

Hi Salvatore,

FYI, the version 18.2.7-2 currently in unstable & testing isn't
affected, as it already contains the patch (I just checked). Please
adjust the security tracker accordingly.

Cheers,

Thomas Goirand (zigo)

Hi Thomas,

Yes looks correct, for some reason I got the metadata wrong for
filling the bug.

Regards,
Salvatore

We believe that the bug you reported is fixed in the latest version of
ceph, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1108410@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Salvatore Bonaccorso <carnil@debian.org> (supplier of updated ceph package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Sat, 16 May 2026 14:52:24 +0200
Source: ceph
Architecture: source
Version: 16.2.15+ds-0+deb12u2
Distribution: bookworm-security
Urgency: high
Maintainer: Ceph Packaging Team <team+ceph@tracker.debian.org>
Changed-By: Salvatore Bonaccorso <carnil@debian.org>
Closes: 1108410 1120797 1126573
Changes:
 ceph (16.2.15+ds-0+deb12u2) bookworm-security; urgency=high
 .
   * Non-maintainer upload by the Security Team.
   * mgr/alerts: enforce ssl context to SMTP_SSL (CVE-2024-31884)
     (Closes: #1126573)
   * Check if `HTTP_X_AMZ_COPY_SOURCE` header is empty (CVE-2024-47866)
     (Closes: #1120797)
   * client: disallow unprivileged users to escalate root privileges
     (CVE-2025-52555) (Closes: #1108410)
   * client: prohibit unprivileged users from setting sgid/suid bits
Checksums-Sha1:
 fd4bb40347a386f856859029fe32d4af1bfc21c5 8303 ceph_16.2.15+ds-0+deb12u2.dsc
 64dcd07cfa5a90f442fecbaf00f0d80b1e5fb128 122268 ceph_16.2.15+ds-0+deb12u2.debian.tar.xz
 d88337c5765145b9f063e563802b64261517c8cb 7447 ceph_16.2.15+ds-0+deb12u2_source.buildinfo
Checksums-Sha256:
 665b3d321903f15aaacfd628f4532a2c0a8cd3632edfb248c43c4b9c7f084fb6 8303 ceph_16.2.15+ds-0+deb12u2.dsc
 f7bfc23cb70b8567b1b21bcedbcfb963029b13ccd3a598dd967db0d4774da3aa 122268 ceph_16.2.15+ds-0+deb12u2.debian.tar.xz
 ce51201e620bda42ad90c84a6e1e7d9c045eba3decd19bb59f7434e98179ca56 7447 ceph_16.2.15+ds-0+deb12u2_source.buildinfo
Files:
 b36ef720fa43aa291df017055749a482 8303 admin optional ceph_16.2.15+ds-0+deb12u2.dsc
 664c96964795d2a44890db041d167214 122268 admin optional ceph_16.2.15+ds-0+deb12u2.debian.tar.xz
 19e95a9582572847a02fc20e988c6bf9 7447 admin optional ceph_16.2.15+ds-0+deb12u2_source.buildinfo
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