# CVE-2025-37906: linux: In the Linux kernel, the following vulnerability has been resolved: ublk: fix race between io_uring_cmd_complete_in_... CVE-2025-37906 is fixed in 23 products on 1 platform, first by DEBIAN-CVE-2025-37906, released May 20, 2025. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2025-37906 - Priority: Routine - CVSS: 4.7 (medium) - EPSS: 0.0019 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: May 20, 2025 ## Description In the Linux kernel, the following vulnerability has been resolved: ublk: fix race between io_uring_cmd_complete_in_task and ublk_cancel_cmd ublk_cancel_cmd() calls io_uring_cmd_done() to complete uring_cmd, but we may have scheduled task work via io_uring_cmd_complete_in_task() for dispatching request, then kernel crash can be triggered. Fix it by not trying to canceling the command if ublk block request is started. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bpftool6.12 amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | bpftool6.12-debuginfo amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | kernel-livepatch-6.12.40-63.114 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | kernel6.12 amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | kernel6.12-debuginfo amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | kernel6.12-debuginfo-common-aarch64 amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | kernel6.12-debuginfo-common-x86_64 amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | kernel6.12-devel amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | kernel6.12-headers amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | kernel6.12-libbpf amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | kernel6.12-libbpf-debuginfo amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | kernel6.12-libbpf-devel amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | kernel6.12-libbpf-static amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | kernel6.12-modules-extra amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | kernel6.12-modules-extra-common amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | kernel6.12-tools amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | kernel6.12-tools-debuginfo amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | kernel6.12-tools-devel amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | linux Debian 13.5 (trixie) | 6.12.115-2 | [DEBIAN-CVE-2025-37906](https://patchblox.com/security/data/fix/linux/debian-cve-2025-37906.md) | May 20, 2025 | | Linux | linux Debian 14 | 6.16.3-1 | [DEBIAN-CVE-2025-37906](https://patchblox.com/security/data/fix/linux/debian-cve-2025-37906.md) | May 20, 2025 | | Linux | perf6.12 amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | perf6.12-debuginfo amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | python3-perf6.12 amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | | Linux | python3-perf6.12-debuginfo amzn 2023 | 1:6.12.40-63.114.amzn2023 | [ALAS2023-2025-1145](https://patchblox.com/security/data/fix/linux/alas2023-2025-1145.md) | Aug 8, 2025 | --- Data as of 2026-11-08T19:12:23Z UTC. 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