{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-40329",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T07:20:57.186Z",
        "datePublished": "2025-12-09T04:09:46.156Z",
        "dateUpdated": "2026-05-11T21:47:15.504Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T21:47:15.504Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/sched: Fix deadlock in drm_sched_entity_kill_jobs_cb\n\nThe Mesa issue referenced below pointed out a possible deadlock:\n\n[ 1231.611031]  Possible interrupt unsafe locking scenario:\n\n[ 1231.611033]        CPU0                    CPU1\n[ 1231.611034]        ----                    ----\n[ 1231.611035]   lock(&xa->xa_lock#17);\n[ 1231.611038]                                local_irq_disable();\n[ 1231.611039]                                lock(&fence->lock);\n[ 1231.611041]                                lock(&xa->xa_lock#17);\n[ 1231.611044]   <Interrupt>\n[ 1231.611045]     lock(&fence->lock);\n[ 1231.611047]\n                *** DEADLOCK ***\n\nIn this example, CPU0 would be any function accessing job->dependencies\nthrough the xa_* functions that don't disable interrupts (eg:\ndrm_sched_job_add_dependency(), drm_sched_entity_kill_jobs_cb()).\n\nCPU1 is executing drm_sched_entity_kill_jobs_cb() as a fence signalling\ncallback so in an interrupt context. It will deadlock when trying to\ngrab the xa_lock which is already held by CPU0.\n\nReplacing all xa_* usage by their xa_*_irq counterparts would fix\nthis issue, but Christian pointed out another issue: dma_fence_signal\ntakes fence.lock and so does dma_fence_add_callback.\n\n  dma_fence_signal() // locks f1.lock\n  -> drm_sched_entity_kill_jobs_cb()\n  -> foreach dependencies\n     -> dma_fence_add_callback() // locks f2.lock\n\nThis will deadlock if f1 and f2 share the same spinlock.\n\nTo fix both issues, the code iterating on dependencies and re-arming them\nis moved out to drm_sched_entity_kill_jobs_work().\n\n[phasta: commit message nits]"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/scheduler/sched_entity.c"
                    ],
                    "versions": [
                        {
                            "version": "2fdb8a8f07c2f1353770a324fd19b8114e4329ac",
                            "lessThan": "70150b9443dddf02157d821c68abf438f55a2e8e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2fdb8a8f07c2f1353770a324fd19b8114e4329ac",
                            "lessThan": "0d63031ee4a57be0252cb9a4e09ae921c75cece9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2fdb8a8f07c2f1353770a324fd19b8114e4329ac",
                            "lessThan": "3e8ada4fd838e3fd2cca94000dac054f3a347c01",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2fdb8a8f07c2f1353770a324fd19b8114e4329ac",
                            "lessThan": "487df8b698345dd5a91346335f05170ed5f29d4e",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/scheduler/sched_entity.c"
                    ],
                    "versions": [
                        {
                            "version": "6.2",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.2",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.117",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.58",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.17.8",
                            "lessThanOrEqual": "6.17.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.2",
                                    "versionEndExcluding": "6.6.117"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.2",
                                    "versionEndExcluding": "6.12.58"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.2",
                                    "versionEndExcluding": "6.17.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.2",
                                    "versionEndExcluding": "6.18"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/70150b9443dddf02157d821c68abf438f55a2e8e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0d63031ee4a57be0252cb9a4e09ae921c75cece9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3e8ada4fd838e3fd2cca94000dac054f3a347c01"
                },
                {
                    "url": "https://git.kernel.org/stable/c/487df8b698345dd5a91346335f05170ed5f29d4e"
                }
            ],
            "title": "drm/sched: Fix deadlock in drm_sched_entity_kill_jobs_cb",
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}