Bug 2482039 (CVE-2026-45997)

Summary: CVE-2026-45997 kernel: scsi: sd: fix missing put_disk() when device_add(&disk_dev) fails
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
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Priority: low    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in the Linux kernel's SCSI disk (sd) driver. When adding a new device, a failure in `device_add()` can lead to a resource leak where a gendisk remains referenced but is not properly freed. This missing cleanup, specifically the `put_disk()` call, can result in resource exhaustion. A local attacker could potentially exploit this to cause a Denial of Service (DoS) on the system.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-05-27 15:08:19 UTC 
In the Linux kernel, the following vulnerability has been resolved:

scsi: sd: fix missing put_disk() when device_add(&disk_dev) fails

If device_add(&sdkp->disk_dev) fails, put_device() runs
scsi_disk_release(), which frees the scsi_disk but leaves the gendisk
referenced. The device_add_disk() error path in sd_probe() calls
put_disk(gd); call put_disk(gd) here to mirror that cleanup.
Comment 1 Keith Grant 2026-05-27 21:32:44 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026052741-CVE-2026-45997-1c32@gregkh/T