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CVE-2024-50082 is a race condition in the Linux kernel blk-rq-qos subsystem involving rq_qos_wait() and rq_qos_wake_function(). The waiting task stores its waitqueue entry and associated rq_qos data on its stack. The vulnerable wake function sets the token flag and removes the waitqueue entry before invoking wake_up_process() using the task pointer in that stack-resident data. A concurrent waiter can observe the removed entry, have finish_wait() return without synchronizing with the waker, return from rq_qos_wait(), and reuse the stack storage. The waker can then dereference a stale or corrupted task pointer. The fix wakes the task before removing the waitqueue entry and uses list_del_init_careful() to synchronize with finish_wait() and list_empty_careful().
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No public exploit code observed for this vulnerability.
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9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel block request QoS race condition that can cause a crash.
A Linux kernel block request QoS race condition that can cause a crash between rq_qos_wait and rq_qos_wake_function, addressed in the updated RHEL 8 go-toolset container image.
Linux kernel block request QoS race condition between rq_qos_wait and rq_qos_wake_function that can cause a system crash.
A Linux kernel block request QoS race condition between rq_qos_wait and rq_qos_wake_function that can cause a crash.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.