CVE-2026-23063
uacce: ensure safe queue release with state management
Description
In the Linux kernel, the following vulnerability has been resolved: uacce: ensure safe queue release with state management Directly calling `put_queue` carries risks since it cannot guarantee that resources of `uacce_queue` have been fully released beforehand. So adding a `stop_queue` operation for the UACCE_CMD_PUT_Q command and leaving the `put_queue` operation to the final resource release ensures safety. Queue states are defined as follows: - UACCE_Q_ZOMBIE: Initial state - UACCE_Q_INIT: After opening `uacce` - UACCE_Q_STARTED: After `start` is issued via `ioctl` When executing `poweroff -f` in virt while accelerator are still working, `uacce_fops_release` and `uacce_remove` may execute concurrently. This can cause `uacce_put_queue` within `uacce_fops_release` to access a NULL `ops` pointer. Therefore, add state checks to prevent accessing freed pointers.
INFO
Published Date :
Feb. 4, 2026, 5:16 p.m.
Last Modified :
March 13, 2026, 9:28 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Implement stop_queue operation for UACCE_CMD_PUT_Q command.
- Ensure put_queue is called only during final resource release.
- Add state checks to prevent accessing freed pointers.
- Verify concurrent execution scenarios for release and remove.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-23063.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-23063 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-23063
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-23063 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-23063 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Mar. 13, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-476 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.199 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.162 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.122 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.68 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.8 *cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.7 up to (excluding) 5.10.249 Added Reference Type kernel.org: https://git.kernel.org/stable/c/26c08dabe5475d99a13f353d8dd70e518de45663 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/336fb41a186e7c0415ae94fec9e23d1f04b87483 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/43f233eb6e7b9d88536881a9bc43726d0e34800d Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/47634d70073890c9c37e39ab4ff93d4b585b028a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/8b57bf1d3b1db692f34bce694a03e41be79f6016 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/92e4f11e29b98ef424ff72d6371acac03e5d973c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/b457abeb5d962db88aaf60e249402fd3073dbfab Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 06, 2026
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/336fb41a186e7c0415ae94fec9e23d1f04b87483 Added Reference https://git.kernel.org/stable/c/8b57bf1d3b1db692f34bce694a03e41be79f6016 Added Reference https://git.kernel.org/stable/c/b457abeb5d962db88aaf60e249402fd3073dbfab -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 04, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: uacce: ensure safe queue release with state management Directly calling `put_queue` carries risks since it cannot guarantee that resources of `uacce_queue` have been fully released beforehand. So adding a `stop_queue` operation for the UACCE_CMD_PUT_Q command and leaving the `put_queue` operation to the final resource release ensures safety. Queue states are defined as follows: - UACCE_Q_ZOMBIE: Initial state - UACCE_Q_INIT: After opening `uacce` - UACCE_Q_STARTED: After `start` is issued via `ioctl` When executing `poweroff -f` in virt while accelerator are still working, `uacce_fops_release` and `uacce_remove` may execute concurrently. This can cause `uacce_put_queue` within `uacce_fops_release` to access a NULL `ops` pointer. Therefore, add state checks to prevent accessing freed pointers. Added Reference https://git.kernel.org/stable/c/26c08dabe5475d99a13f353d8dd70e518de45663 Added Reference https://git.kernel.org/stable/c/43f233eb6e7b9d88536881a9bc43726d0e34800d Added Reference https://git.kernel.org/stable/c/47634d70073890c9c37e39ab4ff93d4b585b028a Added Reference https://git.kernel.org/stable/c/92e4f11e29b98ef424ff72d6371acac03e5d973c