CVE-2026-93185 is a vulnerability in Linux Kernel
Published on September 17, 2026
ASoC: rt700-sdw: always drain jack work on remove
In the Linux kernel, the following vulnerability has been resolved:
ASoC: rt700-sdw: always drain jack work on remove
rt700_sdw_remove() drains jack_detect_work and jack_btn_check_work only
when rt700->hw_init is true. That state bit is cleared by
rt700_update_status() when the SoundWire slave becomes UNATTACHED, but a
jack work item can already have been queued by rt700_interrupt_callback()
or rt700_jack_init() while the device was initialized.
Do not use hw_init as the remove-time guard for draining these work
objects. The delayed works are initialized during rt700_init(), so remove
can cancel them unconditionally and pair the object lifetime with the
codec-private data lifetime instead of a mutable hardware state bit.
This issue was found by our static analysis tool and then confirmed by
manual review of the SoundWire status, interrupt and remove paths. The
remove path should drain work based on whether the work object exists, not
on a runtime hardware state bit that can change after the work was queued.
A QEMU PoC queued jack_detect_work, simulated SDW_SLAVE_UNATTACHED, and
then entered remove. DEBUG_OBJECTS reported an active timer/work object
associated with the rt700 jack work path after remove skipped the cancel.
This is sent as an RFC because the practical trigger depends on SoundWire
core remove ordering after an UNATTACHED status update. If remove cannot
run after hw_init has been cleared while jack work is still pending, this
is a defensive lifecycle cleanup rather than a reachable race on current
systems.
Products Associated with CVE-2026-93185
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Affected Versions
Linux:- Version 737ee8bdf682cedb3c42b713d20ffa5c899591fb and below f1e21b7b977f5ae2955ecf3ab144da2578a4fe00 is affected.
- Version 737ee8bdf682cedb3c42b713d20ffa5c899591fb and below b81c2131dbb6fe04e27841bc719977c106177c61 is affected.
- Version 737ee8bdf682cedb3c42b713d20ffa5c899591fb and below 1bb23c9d68312e77cec81bdfb2cc385e2d2960f7 is affected.
- Version 737ee8bdf682cedb3c42b713d20ffa5c899591fb and below 45fcf435ffcc5f61a43bd9b19094dc52de6cbc05 is affected.
- Version 737ee8bdf682cedb3c42b713d20ffa5c899591fb and below 1e8fddab6cbe536dd02e61205e4b9bf97df6479b is affected.
- Version 737ee8bdf682cedb3c42b713d20ffa5c899591fb and below a47f087877bb2bc57c3ccb714fc49abf45d28e12 is affected.
- Version 737ee8bdf682cedb3c42b713d20ffa5c899591fb and below 612ccf42acd14bb2685fa60c3495ca13e63e8989 is affected.
- Version 5.12 is affected.
- Before 5.12 is unaffected.
- Version 5.15.221, <= 5.15.* is unaffected.
- Version 6.1.188, <= 6.1.* is unaffected.
- Version 6.6.157, <= 6.6.* is unaffected.
- Version 6.12.110, <= 6.12.* is unaffected.
- Version 6.18.52, <= 6.18.* is unaffected.
- Version 7.2.6, <= 7.2.* is unaffected.
- Version 7.3-rc1, <= * is unaffected.