CVE-2026-43484
Received Received - Intake
BaseFortify

Publication date: 2026-05-13

Last updated on: 2026-05-13

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: mmc: core: Avoid bitfield RMW for claim/retune flags Move claimed and retune control flags out of the bitfield word to avoid unrelated RMW side effects in asynchronous contexts. The host->claimed bit shared a word with retune flags. Writes to claimed in __mmc_claim_host() or retune_now in mmc_mq_queue_rq() can overwrite other bits when concurrent updates happen in other contexts, triggering spurious WARN_ON(!host->claimed). Convert claimed, can_retune, retune_now and retune_paused to bool to remove shared-word coupling.
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Meta Information
Published
2026-05-13
Last Modified
2026-05-13
Generated
2026-06-10
EPSS Evaluated
2026-06-08
NVD
CVE-2026-43484
Affected Vendors & Products
Currently, no data is known.
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CWE ID Description
CWE-UNKNOWN
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