vulnerability
Ubuntu: (Multiple Advisories) (CVE-2025-21923): Linux kernel vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:S/C:C/I:C/A:C) | Apr 1, 2025 | Jun 26, 2025 | Aug 18, 2025 |
Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
Apr 1, 2025
Added
Jun 26, 2025
Modified
Aug 18, 2025
Description
In the Linux kernel, the following vulnerability has been resolved:
HID: hid-steam: Fix use-after-free when detaching device
When a hid-steam device is removed it must clean up the client_hdev used for
intercepting hidraw access. This can lead to scheduling deferred work to
reattach the input device. Though the cleanup cancels the deferred work, this
was done before the client_hdev itself is cleaned up, so it gets rescheduled.
This patch fixes the ordering to make sure the deferred work is properly
canceled.
Solutions
ubuntu-upgrade-linux-image-6-11-0-1011-realtimeubuntu-upgrade-linux-image-6-11-0-1014-raspiubuntu-upgrade-linux-image-6-11-0-1015-awsubuntu-upgrade-linux-image-6-11-0-1015-lowlatencyubuntu-upgrade-linux-image-6-11-0-1015-lowlatency-64kubuntu-upgrade-linux-image-6-11-0-1016-gcpubuntu-upgrade-linux-image-6-11-0-1016-gcp-64kubuntu-upgrade-linux-image-6-11-0-1017-oracleubuntu-upgrade-linux-image-6-11-0-1017-oracle-64kubuntu-upgrade-linux-image-6-11-0-1018-azureubuntu-upgrade-linux-image-6-11-0-1018-azure-fdeubuntu-upgrade-linux-image-6-11-0-1024-oemubuntu-upgrade-linux-image-6-11-0-28-genericubuntu-upgrade-linux-image-6-11-0-28-generic-64kubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-azureubuntu-upgrade-linux-image-azure-6-11ubuntu-upgrade-linux-image-azure-fdeubuntu-upgrade-linux-image-azure-fde-6-11ubuntu-upgrade-linux-image-azure-fde-edgeubuntu-upgrade-linux-image-gcpubuntu-upgrade-linux-image-gcp-64kubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-64kubuntu-upgrade-linux-image-generic-64k-hwe-24-04ubuntu-upgrade-linux-image-generic-hwe-24-04ubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-6-11ubuntu-upgrade-linux-image-lowlatency-64kubuntu-upgrade-linux-image-lowlatency-64k-6-11ubuntu-upgrade-linux-image-lowlatency-64k-hwe-24-04ubuntu-upgrade-linux-image-lowlatency-hwe-24-04ubuntu-upgrade-linux-image-oem-24-04bubuntu-upgrade-linux-image-oracleubuntu-upgrade-linux-image-oracle-64kubuntu-upgrade-linux-image-raspiubuntu-upgrade-linux-image-realtimeubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-hwe-24-04
References
- CVE-2025-21923
- https://attackerkb.com/topics/CVE-2025-21923
- CWE-416
- UBUNTU-USN-7605-1
- UBUNTU-USN-7605-2
- UBUNTU-USN-7606-1
- UBUNTU-USN-7628-1
- URL-https://git.kernel.org/linus/e53fc232a65f7488ab75d03a5b95f06aaada7262
- URL-https://ubuntu.com/security/notices/USN-7605-1
- URL-https://ubuntu.com/security/notices/USN-7606-1
- URL-https://www.cve.org/CVERecord?id=CVE-2025-21923
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