CVE-2026-80645
In the Linux kernel, the following vulnerability has been resolved: rapidio/tsi721: prevent a bad dereference in tsi721_db_dpc() With a list_for_each() loop, if we don't find the item we are looking for in the list, then the loop exits with the…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: rapidio/tsi721: prevent a bad dereference in tsi721_db_dpc() With a list_for_each() loop, if we don't find the item we are looking for in the list, then the loop exits with the iterator, which is "dbell" in this loop, pointing to invalid memory. This code uses the "found" variable to determine if we have found the doorbell we are looking for or not. However, the problem that the "found" variable needs to be set to false at the start of each iteration, otherwise after the first correct doorbell, then everything is marked as found. Reset the "found" to false at the start of the iteration and move the variable inside the loop.
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
- EPSS
- 0.26% probability · 18th percentile
- CISA KEV
- Not listed
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/070f356ea4f419e4e85e4089381f4477f41d969e
- https://git.kernel.org/stable/c/13092966ba5d8fb214a4efeddc87f9ed0fd2f945
- https://git.kernel.org/stable/c/3b5c66e922aa6a3331915a14520848a5b3beccc7
- https://git.kernel.org/stable/c/81c06ef66c3ab6eeaa72eb790c90ae043cdb3d43
- https://git.kernel.org/stable/c/9e775c3199903d7c09a52530042b1198eab705bd
- https://git.kernel.org/stable/c/acd54f42abbbd806464468838dbc04efd203d2be
- https://git.kernel.org/stable/c/dc28a14f3e4546b2b06098d24177942540581a5f
- https://git.kernel.org/stable/c/fc15e3a30ddd950f009c76765331783b9af94a87
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.