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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-98212

mmc: hsq: Fix use-after-free in retry work

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: mmc: hsq: Fix use-after-free in retry work mmc_hsq_pump_requests() queues retry_work when request_atomic() returns -EBUSY; today sdhci-sprd is the only consumer that implements request_atomic(). The work is embedded in a devm-allocated mmc_hsq, but is never cancelled during driver removal. Work still pending at unbind can therefore run after the devm allocation has been released and dereference hsq->mmc and hsq->mrq. Use devm_work_autocancel() to cancel and drain retry_work before the devm allocation is released. By the time devres cleanup begins, mmc_remove_host() has already stopped the host, so no new requests can arm the work. This issue was found by an in-house static analysis tool.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 6db96e5810e0a6a345b7d78549de7676ae5b2662 to < c50d6515bffb148c2c12be6d587ec201dfab4c34affected
  • 6db96e5810e0a6a345b7d78549de7676ae5b2662 to < df2eb59fd9eb33663dc1053f5a4ed851e0aa1f67affected
  • 6db96e5810e0a6a345b7d78549de7676ae5b2662 to < 8439bf262ce3267bcfee29d3c61605f1731a2271affected
  • 6db96e5810e0a6a345b7d78549de7676ae5b2662 to < 45341b341642c377192c95e4d48e0a859cf85f42affected
  • 6db96e5810e0a6a345b7d78549de7676ae5b2662 to < 5d132990475f02cfa1debe03d50b479432864ebdaffected

Linux Linux

Default version status: affected

  • 5.8affected
  • 0 to < 5.8unaffected
  • 6.6.158 to ≤ 6.6.*unaffected
  • 6.12.112 to ≤ 6.12.*unaffected
  • 6.18.54 to ≤ 6.18.*unaffected
  • 7.2.8 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References