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CVE-2026-90324

HIGHCVSS 7.8/10

Last modified

CVE-2026-90324 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: ublk: check import_ubuf() return value import_ubuf() can fail if the address range (provided by the userspace ublk server) is outside the allowed user address space. Return that 0 bytes were copied if import_ubuf() fails rather than passing an uninitialized struct iov_iter to ublk_copy_user_pages()..

Description

In the Linux kernel, the following vulnerability has been resolved: ublk: check import_ubuf() return value import_ubuf() can fail if the address range (provided by the userspace ublk server) is outside the allowed user address space. Return that 0 bytes were copied if import_ubuf() fails rather than passing an uninitialized struct iov_iter to ublk_copy_user_pages().

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 981f95a571e3ca20a496c0b77dbf6b06039c6648, < 0121c84adb6a4cd6f7560b5895bd88f9899bbc1f; >= 981f95a571e3ca20a496c0b77dbf6b06039c6648, < 5ac6019cb78e98c9608fda72726b36ddf8474dd7; >= 981f95a571e3ca20a496c0b77dbf6b06039c6648, < 3831568792af75b6523fa93bb91560e29189cf55
LinuxLinux6.5

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-90324?
In the Linux kernel, the following vulnerability has been resolved: ublk: check import_ubuf() return value import_ubuf() can fail if the address range (provided by the userspace ublk server) is outside the allowed user address space. Return that 0 bytes were copied if import_ubuf() fails rather than passing an uninitialized struct iov_iter to ublk_copy_user_pages().
How severe is CVE-2026-90324?
CVE-2026-90324 has a CVSS score of 7.8/10 (HIGH severity).
How do I fix CVE-2026-90324?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST