# CVE-2026-40034: rust-gix-submodule: gix-submodule before 0.29.0 (gitoxide before 0.5.21, gix before 0.84.0) incorrectly validates the update field in .gi... CVE-2026-40034 is fixed in 27 products on 1 platform, first by DEBIAN-CVE-2026-40034, released May 26, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-40034 - Priority: High - CVSS: n/a (important) - EPSS: 0.0065 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: May 26, 2026 ## Description gix-submodule before 0.29.0 (gitoxide before 0.5.21, gix before 0.84.0) incorrectly validates the update field in .gitmodules, allowing attackers to bypass the CommandForbiddenInModulesConfiguration guard when a submodule has been initialized with only partial configuration in .git/config. An attacker can inject arbitrary shell commands via the update field in .gitmodules that will be executed when Submodule::update() is called on a previously-initialized submodule, enabling remote code execution. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | cargo amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | cargo-c amzn 2023 | 0.10.19-1.amzn2023.0.4 | [ALAS2023-2026-2024](https://patchblox.com/security/data/fix/linux/alas2023-2026-2024.md) | Aug 3, 2026 | | Linux | cargo-c-debuginfo amzn 2023 | 0.10.19-1.amzn2023.0.4 | [ALAS2023-2026-2024](https://patchblox.com/security/data/fix/linux/alas2023-2026-2024.md) | Aug 3, 2026 | | Linux | cargo-debuginfo amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | clippy amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | clippy-debuginfo amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | gitoxide opensuse-leap 16.0 | 0.56.0-bp160.1.1 | [OPENSUSE-SU-2026:21558-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21558-1.md) | Aug 10, 2026 | | Linux | rust amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | rust-analyzer amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | rust-analyzer-debuginfo amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | rust-cargo-c-debugsource amzn 2023 | 0.10.19-1.amzn2023.0.4 | [ALAS2023-2026-2024](https://patchblox.com/security/data/fix/linux/alas2023-2026-2024.md) | Aug 3, 2026 | | Linux | rust-debugger-common amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | rust-debuginfo amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | rust-debugsource amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | rust-doc amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | rust-gdb amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | rust-gix-submodule Debian 14 | 0.30.0-1 | [DEBIAN-CVE-2026-40034](https://patchblox.com/security/data/fix/linux/debian-cve-2026-40034.md) | May 26, 2026 | | Linux | rust-lldb amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | rust-src amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | rust-std-static amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | rust-std-static-wasm32-unknown-unknown amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | rust-std-static-wasm32-wasip1 amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | rust-toolset amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | rust-toolset-srpm-macros amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | rustfmt amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | rustfmt-debuginfo amzn 2023 | 1.97.0-1.amzn2023.0.1 | [ALAS2023-2026-1951](https://patchblox.com/security/data/fix/linux/alas2023-2026-1951.md) | Jul 20, 2026 | | Linux | stgit opensuse-leap 16.0 | 2.6.0-bp160.1.1 | [OPENSUSE-SU-2026:21185-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21185-1.md) | Jun 30, 2026 | --- Data as of 2026-11-08T13:06:02Z UTC. 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