CVE-2026-68094

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68094", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.367Z", "datePublished": "2026-08-10T11:58:07.086Z", "dateUpdated": "2026-08-17T04:58:42.583Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T04:58:42.583Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched_ext: Preserve rq tracking across local DSQ dispatch\n\ndispatch_to_local_dsq() can run from scx_bpf_dsq_move_to_local() while\nops.dispatch() has recorded the current rq. Moving a task to a local DSQ\nmay switch to the source or destination rq before synchronously invoking\nops.dequeue() through the following path:\n\n SCX_CALL_OP(dispatch, rq)\n ops.dispatch()\n scx_bpf_dsq_move_to_local()\n scx_flush_dispatch_buf()\n finish_dispatch()\n dispatch_to_local_dsq()\n scx_dispatch_enqueue()\n local_dsq_post_enq()\n call_task_dequeue()\n SCX_CALL_OP_TASK(dequeue, locked_rq, ...)\n\nThe nested callback saves the recorded rq and restores it on return. If\nthe rq tracking does not follow the lock switch, update_locked_rq() can\ntrigger the following lockdep assertion while restoring an rq which is\nno longer held:\n\n WARNING: kernel/sched/sched.h:1641 at call_task_dequeue+0x160/0x170\n Call Trace:\n scx_dispatch_enqueue+0x2b0/0x460\n dispatch_to_local_dsq+0x138/0x230\n scx_flush_dispatch_buf+0x1af/0x220\n scx_bpf_dsq_move_to_local___v2+0xe2/0x1c0\n bpf__sched_ext_ops_dispatch+0x4b/0xa7\n do_pick_task_scx+0x3b6/0x910\n __pick_next_task+0x105/0x1f0\n __schedule+0x3e7/0x1980\n\nIntroduce switch_rq_lock() to update the tracking state together with\neach rq lock handoff. Use it in dispatch_to_local_dsq(),\nmove_remote_task_to_local_dsq() and the in-balance paths of\nscx_dsq_move(), ensuring that scx_locked_rq() consistently refers to the\nrq whose lock is actually held throughout the lock dance."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/sched/ext/ext.c"], "versions": [{"version": "7fb39e4eb4c3db52e4707a6a1cd45362f7e803f5", "lessThan": "97c09c9f5739b8757ee29dabb0af30069137e286", "status": "affected", "versionType": "git"}, {"version": "7fb39e4eb4c3db52e4707a6a1cd45362f7e803f5", "lessThan": "18d62044cda7a2b40f59d910659c0b0d6accad37", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/sched/ext/ext.c"], "versions": [{"version": "7.1", "status": "affected"}, {"version": "0", "lessThan": "7.1", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "7.1", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.1", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/97c09c9f5739b8757ee29dabb0af30069137e286"}, {"url": "https://git.kernel.org/stable/c/18d62044cda7a2b40f59d910659c0b0d6accad37"}], "title": "sched_ext: Preserve rq tracking across local DSQ dispatch", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/sched/ext/ext.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "97c09c9f5739b8757ee29dabb0af30069137e286", "status": "affected", "version": "7fb39e4eb4c3db52e4707a6a1cd45362f7e803f5", "versionType": "git"}, {"lessThan": "18d62044cda7a2b40f59d910659c0b0d6accad37", "status": "affected", "version": "7fb39e4eb4c3db52e4707a6a1cd45362f7e803f5", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/sched/ext/ext.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "7.1"}, {"lessThan": "7.1", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched_ext: Preserve rq tracking across local DSQ dispatch\n\ndispatch_to_local_dsq() can run from scx_bpf_dsq_move_to_local() while\nops.dispatch() has recorded the current rq. Moving a task to a local DSQ\nmay switch to the source or destination rq before synchronously invoking\nops.dequeue() through the following path:\n\n SCX_CALL_OP(dispatch, rq)\n ops.dispatch()\n scx_bpf_dsq_move_to_local()\n scx_flush_dispatch_buf()\n finish_dispatch()\n dispatch_to_local_dsq()\n scx_dispatch_enqueue()\n local_dsq_post_enq()\n call_task_dequeue()\n SCX_CALL_OP_TASK(dequeue, locked_rq, ...)\n\nThe nested callback saves the recorded rq and restores it on return. If\nthe rq tracking does not follow the lock switch, update_locked_rq() can\ntrigger the following lockdep assertion while restoring an rq which is\nno longer held:\n\n WARNING: kernel/sched/sched.h:1641 at call_task_dequeue+0x160/0x170\n Call Trace:\n scx_dispatch_enqueue+0x2b0/0x460\n dispatch_to_local_dsq+0x138/0x230\n scx_flush_dispatch_buf+0x1af/0x220\n scx_bpf_dsq_move_to_local___v2+0xe2/0x1c0\n bpf__sched_ext_ops_dispatch+0x4b/0xa7\n do_pick_task_scx+0x3b6/0x910\n __pick_next_task+0x105/0x1f0\n __schedule+0x3e7/0x1980\n\nIntroduce switch_rq_lock() to update the tracking state together with\neach rq lock handoff. Use it in dispatch_to_local_dsq(),\nmove_remote_task_to_local_dsq() and the in-balance paths of\nscx_dsq_move(), ensuring that scx_locked_rq() consistently refers to the\nrq whose lock is actually held throughout the lock dance."}], "id": "CVE-2026-68094", "lastModified": "2026-08-17T05:18:08.667", "metrics": {}, "published": "2026-08-10T13:19:53.543", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/18d62044cda7a2b40f59d910659c0b0d6accad37"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/97c09c9f5739b8757ee29dabb0af30069137e286"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: sched_ext: Preserve rq tracking across local DSQ dispatch", "id": "2513445", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513445"}, "csaw": false, "cwe": "CWE-367", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nsched_ext: Preserve rq tracking across local DSQ dispatch\ndispatch_to_local_dsq() can run from scx_bpf_dsq_move_to_local() while\nops.dispatch() has recorded the current rq. Moving a task to a local DSQ\nmay switch to the source or destination rq before synchronously invoking\nops.dequeue() through the following path:\nSCX_CALL_OP(dispatch, rq)\nops.dispatch()\nscx_bpf_dsq_move_to_local()\nscx_flush_dispatch_buf()\nfinish_dispatch()\ndispatch_to_local_dsq()\nscx_dispatch_enqueue()\nlocal_dsq_post_enq()\ncall_task_dequeue()\nSCX_CALL_OP_TASK(dequeue, locked_rq, ...)\nThe nested callback saves the recorded rq and restores it on return. If\nthe rq tracking does not follow the lock switch, update_locked_rq() can\ntrigger the following lockdep assertion while restoring an rq which is\nno longer held:\nWARNING: kernel/sched/sched.h:1641 at call_task_dequeue+0x160/0x170\nCall Trace:\nscx_dispatch_enqueue+0x2b0/0x460\ndispatch_to_local_dsq+0x138/0x230\nscx_flush_dispatch_buf+0x1af/0x220\nscx_bpf_dsq_move_to_local___v2+0xe2/0x1c0\nbpf__sched_ext_ops_dispatch+0x4b/0xa7\ndo_pick_task_scx+0x3b6/0x910\n__pick_next_task+0x105/0x1f0\n__schedule+0x3e7/0x1980\nIntroduce switch_rq_lock() to update the tracking state together with\neach rq lock handoff. Use it in dispatch_to_local_dsq(),\nmove_remote_task_to_local_dsq() and the in-balance paths of\nscx_dsq_move(), ensuring that scx_locked_rq() consistently refers to the\nrq whose lock is actually held throughout the lock dance.", "A flaw was found in the Linux kernel's `sched_ext` component. When a task is moved to a local dispatch queue (DSQ), the run queue (rq) tracking mechanism may not correctly follow lock switches. This inconsistency can lead to a kernel assertion failure, potentially causing system instability or a denial of service (DoS)."], "name": "CVE-2026-68094", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68094\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68094\nhttps://lore.kernel.org/linux-cve-announce/2026081050-CVE-2026-68094-dd0c@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7fb39e4eb4c3db52e4707a6a1cd45362f7e803f5,97c09c9f5739b8757ee29dabb0af30069137e286)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7fb39e4eb4c3db52e4707a6a1cd45362f7e803f5,18d62044cda7a2b40f59d910659c0b0d6accad37)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7.1"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,7.1)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc4,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-10T13:30:05.189403+00:00", "updated": "2026-08-10T14:30:03.867042+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-367", "CWE-451"]}