Input: edt-ft5x06 - fix use-after-free in debugfs teardown

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Summary

CVECVE-2026-46097
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-27 14:17:31 UTC
Updated2026-05-27 14:48:03 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: Input: edt-ft5x06 - fix use-after-free in debugfs teardown The commit 68743c500c6e ("Input: edt-ft5x06 - use per-client debugfs directory") removed the manual debugfs teardown, relying on the I2C core to handle it. However, this creates a window where debugfs files are still accessible after edt_ft5x06_ts_teardown_debugfs() frees tsdata->raw_buffer. To prevent a use-after-free, protect the freeing of raw_buffer with the device mutex and set raw_buffer to NULL. The debugfs read function already checks if raw_buffer is NULL under the same mutex, so this safely avoids the use-after-free.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 68743c500c6eafcd0b16dc6067fea5bca0795eef a516d43886623e3cca5fa3446bed8fc7c7982be2 git Not specified
CNA Linux Linux affected 68743c500c6eafcd0b16dc6067fea5bca0795eef 9f6c5e7b747d40e1c65cbfcb975857d25154c075 git Not specified
CNA Linux Linux affected 68743c500c6eafcd0b16dc6067fea5bca0795eef f5f9e07060519e2287e99019a6de1eb3ebb65c37 git Not specified
CNA Linux Linux affected 6.17 Not specified
CNA Linux Linux unaffected 6.17 semver Not specified
CNA Linux Linux unaffected 6.18.27 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.4 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/9f6c5e7b747d40e1c65cbfcb975857d25154c075 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a516d43886623e3cca5fa3446bed8fc7c7982be2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f5f9e07060519e2287e99019a6de1eb3ebb65c37 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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