{"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"}}}}