Incus 7.4 security fixes - #3916
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imageDownload reused an image from another project without checking the caller could view it, letting a client that knew a private fingerprint import it. Only reuse it directly when public or viewable, otherwise download it (proving access) and dedupe against the on-disk copy. This addresses CVE-2026-81501 Signed-off-by: Stéphane Graber <stgraber@stgraber.org>
The local filename for an exported image came from server-controlled data (Content-Disposition for unified images, the simplestreams index path) and was joined with the target directory. Basename it. This addresses CVE-2026-81500 Signed-off-by: Stéphane Graber <stgraber@stgraber.org>
bensmrs
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stgraber
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August 27, 2026 22:24
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sourced from: - lxc/incus#3916 advisories: - GHSA-9pqw-c7m4-xvg7 (Moderate) - GHSA-c6wx-8679-hpr9 (Moderate)
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sourced from: - lxc/incus#3916 advisories: - GHSA-9pqw-c7m4-xvg7 (Moderate) - GHSA-c6wx-8679-hpr9 (Moderate) (cherry picked from commit aab3bb3)
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