cbcvebase.
CVE-2026-23063
published 2026-02-04

CVE-2026-23063: In the Linux kernel, the following vulnerability has been resolved: uacce: ensure safe queue release with state management Directly calling `put_queue` carries…

PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.12%
2.5th percentile
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.

Affected

62 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.162-1 (bookworm)linux 6.1.162-1 (bookworm)
debianlinux-6.1< linux 6.1.162-1 (bookworm)linux 6.1.162-1 (bookworm)
linuxlinux
linuxlinux>= 015d239ac0142ad0e26567fd890ef8d171f13709 < b457abeb5d962db88aaf60e249402fd3073dbfabb457abeb5d962db88aaf60e249402fd3073dbfab
linuxlinux>= 015d239ac0142ad0e26567fd890ef8d171f13709 < 8b57bf1d3b1db692f34bce694a03e41be79f60168b57bf1d3b1db692f34bce694a03e41be79f6016
linuxlinux>= 015d239ac0142ad0e26567fd890ef8d171f13709 < 336fb41a186e7c0415ae94fec9e23d1f04b87483336fb41a186e7c0415ae94fec9e23d1f04b87483
linuxlinux>= 015d239ac0142ad0e26567fd890ef8d171f13709 < 43f233eb6e7b9d88536881a9bc43726d0e34800d43f233eb6e7b9d88536881a9bc43726d0e34800d
linuxlinux>= 015d239ac0142ad0e26567fd890ef8d171f13709 < 47634d70073890c9c37e39ab4ff93d4b585b028a47634d70073890c9c37e39ab4ff93d4b585b028a
linuxlinux>= 015d239ac0142ad0e26567fd890ef8d171f13709 < 92e4f11e29b98ef424ff72d6371acac03e5d973c92e4f11e29b98ef424ff72d6371acac03e5d973c
linuxlinux>= 015d239ac0142ad0e26567fd890ef8d171f13709 < 26c08dabe5475d99a13f353d8dd70e518de4566326c08dabe5475d99a13f353d8dd70e518de45663
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.249-15.10.249-1
linuxlinux_kernel>= 0 < 6.1.162-16.1.162-1
linuxlinux_kernel>= 0 < 6.12.69-16.12.69-1
linuxlinux_kernel>= 0 < 6.18.8-16.18.8-1
linuxlinux_kernel>= 5.11 < 5.15.1995.15.199
linuxlinux_kernel>= 5.16 < 6.1.1626.1.162
linuxlinux_kernel>= 5.7 < 5.10.2495.10.249
linuxlinux_kernel>= 6.13 < 6.18.86.18.8
linuxlinux_kernel>= 6.2 < 6.6.1226.6.122
linuxlinux_kernel>= 6.7 < 6.12.686.12.68
ubuntulinux
ubuntulinux-aws
ubuntulinux-aws-fips
ubuntulinux-azure

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_ubuntu7.8HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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