CVE-2026-90267
kernel: scsi: sd: Fix special_vec mempool leak when scsi_alloc_sgtables() fails
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 17, 2026
Updated · October 6, 2026
Description
A flaw was found in the Linux kernel's SCSI subsystem. When handling UNMAP and WRITE SAME commands, a memory leak can occur if the scsi_alloc_sgtables() function fails after a special payload page has been allocated. This oversight prevents the proper deallocation of the page, leading to a memory leak. A local attacker could potentially exploit this to cause a Denial of Service (DoS) by exhausting system memory.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-772 · Missing Release of Resource after Effective Lifetime