CVE-2026-80645rapidio/tsi721: prevent a bad dereference in tsi721_db_dpc()
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 29, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 48618fb4e522d9d02e217ac05f52749545c1af20 builds before 9e775c3199903d7c09a52530042b1198eab705bd; 48618fb4e522d9d02e217ac05f52749545c1af20 builds before 81c06ef66c3ab6eeaa72eb790c90ae043cdb3d43; from 48618fb4e522d9d02e217ac05f52749545c1af20 before 13092966ba5d8fb214a4efeddc87f9ed0fd2f945; from 48618fb4e522d9d02e217ac05f52749545c1af20 before acd54f42abbbd806464468838dbc04efd203d2be; 48618fb4e522d9d02e217ac05f52749545c1af20 builds before 3b5c66e922aa6a3331915a14520848a5b3beccc7; 48618fb4e522d9d02e217ac05f52749545c1af20 builds before 070f356ea4f419e4e85e4089381f4477f41d969e; from 48618fb4e522d9d02e217ac05f52749545c1af20 before dc28a14f3e4546b2b06098d24177942540581a5f; from 48618fb4e522d9d02e217ac05f52749545c1af20 before fc15e3a30ddd950f009c76765331783b9af94a87 | CNA record |
References
- https://git.kernel.org/stable/c/9e775c3199903d7c09a52530042b1198eab705bd
- https://git.kernel.org/stable/c/81c06ef66c3ab6eeaa72eb790c90ae043cdb3d43
- https://git.kernel.org/stable/c/13092966ba5d8fb214a4efeddc87f9ed0fd2f945
- https://git.kernel.org/stable/c/acd54f42abbbd806464468838dbc04efd203d2be
- https://git.kernel.org/stable/c/3b5c66e922aa6a3331915a14520848a5b3beccc7
- https://git.kernel.org/stable/c/070f356ea4f419e4e85e4089381f4477f41d969e
- https://git.kernel.org/stable/c/dc28a14f3e4546b2b06098d24177942540581a5f
- https://git.kernel.org/stable/c/fc15e3a30ddd950f009c76765331783b9af94a87
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.