# CVE-2026-84270: gvfs: A flaw was found in the MTP backend in gvfs CVE-2026-84270 is fixed in 6 products on 1 platform, first by gvfs 1.48.2-0ubuntu1.3, released September 1, 2026. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2026-84270 - Priority: Routine - CVSS: 4.3 (medium) - EPSS: 0.0015 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Sep 1, 2026 ## Description A flaw was found in the MTP backend in gvfs. When reading a file from a mounted MTP device, do_read() in gvfsbackendmtp.c trusts the data length returned by the device without limiting it to the original size requested by the client. If a malicious MTP device responds with more bytes than requested, this unrestricted length is passed directly to memcpy(). This causes the operation to read memory outside the intended boundaries. This allows an attacker who plugs in a malicious MTP device to cause a segmentation fault when a file is read and crash the gvfsd-mtp process, resulting in a denial of service. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | gvfs Debian 14 | 1.62.0-1 | [DEBIAN-CVE-2026-84270](https://patchblox.com/security/data/fix/linux/debian-cve-2026-84270.md) | Sep 17, 2026 | | Linux | gvfs Ubuntu 22.04.1 LTS (jammy) | 1.48.2-0ubuntu1.3 | [gvfs 1.48.2-0ubuntu1.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gvfs-1.48.2-0ubuntu1.3.md) | Sep 1, 2026 | | Linux | gvfs Ubuntu 24.04.5 LTS (noble) | 1.54.4-0ubuntu1~24.04.5 | [gvfs 1.54.4-0ubuntu1~24.04.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gvfs-1.54.4-0ubuntu1-24.04.5.md) | Sep 1, 2026 | | Linux | gvfs Ubuntu 26.04.1 LTS (resolute) | 1.60.0-1ubuntu0.2 | [gvfs 1.60.0-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gvfs-1.60.0-1ubuntu0.2.md) | Sep 1, 2026 | | Linux | gvfs opensuse-leap 16.0 | 1.59.90-160000.3.1 | [OPENSUSE-SU-2026:21875-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21875-1.md) | Sep 18, 2026 | | Linux | gvfs sles 15.6 | 1.52.2-150600.3.9.1 | [SUSE-SU-2026:4240-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4240-1.md) | Sep 17, 2026 | | Linux | gvfs sles 15.7 | 1.52.2-150600.3.9.1 | [SUSE-SU-2026:4240-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4240-1.md) | Sep 17, 2026 | | Linux | gvfs-backends Ubuntu 22.04.1 LTS (jammy) | 1.48.2-0ubuntu1.3 | [gvfs-backends 1.48.2-0ubuntu1.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gvfs-backends-1.48.2-0ubuntu1.3.md) | Sep 1, 2026 | | Linux | gvfs-backends Ubuntu 24.04.5 LTS (noble) | 1.54.4-0ubuntu1~24.04.5 | [gvfs-backends 1.54.4-0ubuntu1~24.04.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gvfs-backends-1.54.4-0ubuntu1-24.04.5.md) | Sep 1, 2026 | | Linux | gvfs-backends Ubuntu 26.04.1 LTS (resolute) | 1.60.0-1ubuntu0.2 | [gvfs-backends 1.60.0-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gvfs-backends-1.60.0-1ubuntu0.2.md) | Sep 1, 2026 | | Linux | gvfs-common Ubuntu 22.04.1 LTS (jammy) | 1.48.2-0ubuntu1.3 | [gvfs-common 1.48.2-0ubuntu1.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gvfs-common-1.48.2-0ubuntu1.3.md) | Sep 1, 2026 | | Linux | gvfs-common Ubuntu 24.04.5 LTS (noble) | 1.54.4-0ubuntu1~24.04.5 | [gvfs-common 1.54.4-0ubuntu1~24.04.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gvfs-common-1.54.4-0ubuntu1-24.04.5.md) | Sep 1, 2026 | | Linux | gvfs-common Ubuntu 26.04.1 LTS (resolute) | 1.60.0-1ubuntu0.2 | [gvfs-common 1.60.0-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gvfs-common-1.60.0-1ubuntu0.2.md) | Sep 1, 2026 | | Linux | gvfs-daemons Ubuntu 22.04.1 LTS (jammy) | 1.48.2-0ubuntu1.3 | [gvfs-daemons 1.48.2-0ubuntu1.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gvfs-daemons-1.48.2-0ubuntu1.3.md) | Sep 1, 2026 | | Linux | gvfs-daemons Ubuntu 24.04.5 LTS (noble) | 1.54.4-0ubuntu1~24.04.5 | [gvfs-daemons 1.54.4-0ubuntu1~24.04.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gvfs-daemons-1.54.4-0ubuntu1-24.04.5.md) | Sep 1, 2026 | | Linux | gvfs-daemons Ubuntu 26.04.1 LTS (resolute) | 1.60.0-1ubuntu0.2 | [gvfs-daemons 1.60.0-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gvfs-daemons-1.60.0-1ubuntu0.2.md) | Sep 1, 2026 | | Linux | gvfs-fuse Ubuntu 22.04.1 LTS (jammy) | 1.48.2-0ubuntu1.3 | [gvfs-fuse 1.48.2-0ubuntu1.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gvfs-fuse-1.48.2-0ubuntu1.3.md) | Sep 1, 2026 | | Linux | gvfs-fuse Ubuntu 24.04.5 LTS (noble) | 1.54.4-0ubuntu1~24.04.5 | [gvfs-fuse 1.54.4-0ubuntu1~24.04.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gvfs-fuse-1.54.4-0ubuntu1-24.04.5.md) | Sep 1, 2026 | | Linux | gvfs-fuse Ubuntu 26.04.1 LTS (resolute) | 1.60.0-1ubuntu0.2 | [gvfs-fuse 1.60.0-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gvfs-fuse-1.60.0-1ubuntu0.2.md) | Sep 1, 2026 | | Linux | gvfs-libs Ubuntu 22.04.1 LTS (jammy) | 1.48.2-0ubuntu1.3 | [gvfs-libs 1.48.2-0ubuntu1.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gvfs-libs-1.48.2-0ubuntu1.3.md) | Sep 1, 2026 | | Linux | gvfs-libs Ubuntu 24.04.5 LTS (noble) | 1.54.4-0ubuntu1~24.04.5 | [gvfs-libs 1.54.4-0ubuntu1~24.04.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gvfs-libs-1.54.4-0ubuntu1-24.04.5.md) | Sep 1, 2026 | | Linux | gvfs-libs Ubuntu 26.04.1 LTS (resolute) | 1.60.0-1ubuntu0.2 | [gvfs-libs 1.60.0-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gvfs-libs-1.60.0-1ubuntu0.2.md) | Sep 1, 2026 | --- Data as of 2026-11-09T01:18:40Z UTC. 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