CVE-2026-98155

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().

Affected Software

VendorProductVersion RangeStatus
LinuxLinux08021f2d4a557d6491e3bcc288e96425f50aa3cf < f4b64488f3deca63f7fbc7d7c3835b2e668003f9affected
LinuxLinuxf403094d9075d7c565a3d81002b781c325cb3c07 < 12deeade460d47031267256ba07add51cc7eabd0affected
LinuxLinux2feec5ae5df785658924ab6bd91280dc3926507c < c72e81ee46bdd4c221114d6e9515e9b4647616d7affected
LinuxLinux2feec5ae5df785658924ab6bd91280dc3926507c < ab243f74ab4084ca5c8dec608cb5b0deb27db067affected
LinuxLinux2dd67966f39a2abf8ccb4865031c722e40e01b7faffected
LinuxLinuxee0180e77e6c8482644569632065411de844c515affected
LinuxLinux6.12.81 < 6.12.111affected
LinuxLinux6.18.22 < 6.18.53affected
LinuxLinux6.6.134 < 6.7affected
LinuxLinux6.19.12 < 6.20affected
LinuxLinux7.0affected
LinuxLinux0 < 7.0unaffected
LinuxLinux6.12.111 <= 6.12.*unaffected
LinuxLinux6.18.53 <= 6.18.*unaffected
LinuxLinux7.2.7 <= 7.2.*unaffected
LinuxLinux7.3-rc2 <= *unaffected

Weaknesses

References