A ntfs-3g security update has been released for Debian GUN/Linux 9 LTS.

DLA 2819-1: ntfs-3g security update

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Debian LTS Advisory DLA-2819-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Markus Koschany
November 16, 2021   https://wiki.debian.org/LTS
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Package : ntfs-3g
Version : 1:2016.2.22AR.1+dfsg-1+deb9u2
CVE ID : CVE-2021-33285 CVE-2021-33286 CVE-2021-33287 CVE-2021-33289
CVE-2021-35266 CVE-2021-35267 CVE-2021-35268 CVE-2021-35269
CVE-2021-39251 CVE-2021-39252 CVE-2021-39253 CVE-2021-39254
CVE-2021-39255 CVE-2021-39256 CVE-2021-39257 CVE-2021-39258
CVE-2021-39259 CVE-2021-39260 CVE-2021-39261 CVE-2021-39262
CVE-2021-39263
Debian Bug : 988386

Several vulnerabilities were discovered in NTFS-3G, a read-write NTFS
driver for FUSE. A local user can take advantage of these flaws for
local root privilege escalation.

For Debian 9 stretch, these problems have been fixed in version
1:2016.2.22AR.1+dfsg-1+deb9u2.

We recommend that you upgrade your ntfs-3g packages.

For the detailed security status of ntfs-3g please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/ntfs-3g

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://wiki.debian.org/LTS