CVE-2026-23087
MEDIUMCVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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3Description
In the Linux kernel, the following vulnerability has been resolved: scsi: xen: scsiback: Fix potential memory leak in scsiback_remove() Memory allocated for struct vscsiblk_info in scsiback_probe() is not freed in scsiback_remove() leading to potential memory leaks on remove, as well as in the scsiback_probe() error paths. Fix that by freeing it in scsiback_remove().
Analysis
The Linux kernel's Xen SCSI backend driver fails to properly deallocate memory for vscsiblk_info structures during device removal and error handling, allowing local users with appropriate privileges to trigger denial of service through memory exhaustion. The vulnerability exists because scsiback_remove() does not free memory allocated in scsiback_probe(), resulting in persistent memory leaks when removing the device or during probe failures. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.
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