CVE-2026-90324
ublk: check import_ubuf() return value
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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().
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 17, 2026 |
| Last Updated | Oct 21, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
981f95a571e3ca20a496c0b77dbf6b06039c6648 < 7f97c762b5f6e0005c5c7d040ded73bf7fb3587e 981f95a571e3ca20a496c0b77dbf6b06039c6648 < 27ff6e8703f7a7160c728501da2f8ef8e7bb6b2f 981f95a571e3ca20a496c0b77dbf6b06039c6648 < 0121c84adb6a4cd6f7560b5895bd88f9899bbc1f 981f95a571e3ca20a496c0b77dbf6b06039c6648 < 5ac6019cb78e98c9608fda72726b36ddf8474dd7 981f95a571e3ca20a496c0b77dbf6b06039c6648 < 3831568792af75b6523fa93bb91560e29189cf55
Linux / Linux
6.5
References
git.kernel.org: https://git.kernel.org/stable/c/7f97c762b5f6e0005c5c7d040ded73bf7fb3587e git.kernel.org: https://git.kernel.org/stable/c/27ff6e8703f7a7160c728501da2f8ef8e7bb6b2f git.kernel.org: https://git.kernel.org/stable/c/0121c84adb6a4cd6f7560b5895bd88f9899bbc1f git.kernel.org: https://git.kernel.org/stable/c/5ac6019cb78e98c9608fda72726b36ddf8474dd7 git.kernel.org: https://git.kernel.org/stable/c/3831568792af75b6523fa93bb91560e29189cf55