CVE-2026-89483 Linux kernel nvme - Information Disclosure

Linux kernel nvme contains an uninitialized memory disclosure caused by fallback discard page not being zeroed in nvme_setup_discard, letting attackers with memory pressure conditions leak kernel memory, exploit requires memory pressure causing allocation failure.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.57% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Information Disclosure
Impact
Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
11 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix that zeroes the fallback discard page.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs