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Message-ID: <2024102105-CVE-2024-47729-8985@gregkh> Date: Mon, 21 Oct 2024 14:16:08 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2024-47729: drm/xe: Use reserved copy engine for user binds on faulting devices Description =========== In the Linux kernel, the following vulnerability has been resolved: drm/xe: Use reserved copy engine for user binds on faulting devices User binds map to engines with can fault, faults depend on user binds completion, thus we can deadlock. Avoid this by using reserved copy engine for user binds on faulting devices. While we are here, normalize bind queue creation with a helper. v2: - Pass in extensions to bind queue creation (CI) v3: - s/resevered/reserved (Lucas) - Fix NULL hwe check (Jonathan) The Linux kernel CVE team has assigned CVE-2024-47729 to this issue. Affected and fixed versions =========================== Issue introduced in 6.8 with commit dd08ebf6c352 and fixed in 6.11.2 with commit 439fc1e569c5 Issue introduced in 6.8 with commit dd08ebf6c352 and fixed in 6.12-rc1 with commit 852856e3b6f6 Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2024-47729 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: drivers/gpu/drm/xe/xe_exec_queue.c drivers/gpu/drm/xe/xe_exec_queue.h drivers/gpu/drm/xe/xe_migrate.c drivers/gpu/drm/xe/xe_vm.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/439fc1e569c57669dbb842d0a77c7ba0a82a9f5d https://git.kernel.org/stable/c/852856e3b6f679c694dd5ec41e5a3c11aa46640b
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