CVE-2026-89947 Linux Kernel - Out of Bounds Read

Linux kernel contains a global out-of-bounds read caused by a mismatch in the number of parents for gxbb_32k_clk_sel clock mux in the meson clk driver, letting local attackers cause memory corruption, exploit requires kernel-level access.

CVSS base score 8.0 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.18% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Out of Bounds Read
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
Published
16 September 2026
Updated
15 October 2026

Vendor fix

Update to the Linux kernel version including commit 7915d7d5407c or later.

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

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