accel/qaic: Address potential out-of-bounds read in resp_worker()

Summary

In the Linux kernel, the following vulnerability has been resolved: accel/qaic: Address potential out-of-bounds read in resp_worker() Although 'commit 2feec5ae5df7 ("accel/qaic: Handle DBC deactivation if the owner went away")' fixes the scenario it was intended for by walking the message and only decoding QAIC_TRANS_DEACTIVATE_FROM_DEV, if present, it skipped over the bounds checking code that is included in decode_message(). This could lead to issues such as reading past the slab allocation's end, infinite loops or kernel panics. For those issues to happen, a malformed wire message is needed to be sent from the device. Instead of duplicating the bounds checking code already present in decode_message(), use the function inside resp_worker().

Timeline

1. Sep 25, 2026, 10:36 AM UTCCVE published
2. Oct 19, 2026, 9:14 AM UTCRecord last updated

Affected versions

• Linux Linux

  From 2dd67966f39a2abf8ccb4865031c722e40e01b7f · fixed in 5807a65f301b6c0e73a2dc03dd6f5e80a2861b72; From 08021f2d4a557d6491e3bcc288e96425f50aa3cf · fixed in f4b64488f3deca63f7fbc7d7c3835b2e668003f9; From f403094d9075d7c565a3d81002b781c325cb3c07 · fixed in 12deeade460d47031267256ba07add51cc7eabd0; From 2feec5ae5df785658924ab6bd91280dc3926507c · fixed in c72e81ee46bdd4c221114d6e9515e9b4647616d7; From 2feec5ae5df785658924ab6bd91280dc3926507c · fixed in ab243f74ab4084ca5c8dec608cb5b0deb27db067; From 6.6.134 · fixed in 6.6.158; From 6.12.81 · fixed in 6.12.111; From 6.18.22 · fixed in 6.18.53; From 6.19.12 · fixed in 6.20

• Linux Linux

  7.0

• KernelLinux

  fixed in 6.6.158; From 6.7.0 · fixed in 6.12.111; From 6.13.0 · fixed in 6.18.53; From 6.19.0 · fixed in 7.2.7

References 5