What is CVE-2026-46064?

CVE-2026-46064 is a high-severity vulnerability in Linux, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2026-05-27.

How severe is CVE-2026-46064?

High severity. CVSS v3 base score is 7.1 out of 10.

Out-of-bounds Read in Linux

CVE-2026-46064

In the Linux kernel, the following vulnerability has been resolved: ibmasm: fix heap over-read in ibmasm_send_i2o_message() The ibmasm_send_i2o_message() function uses get_dot_command_size() to compute the byte count for memcpy_toio(), b…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (2.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.

Affected products

Linux — versions 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, 6.18.27, 5.15.209
Linux Linux_kernel — versions 2.6.12

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2026-46064?: CVE-2026-46064 is a high-severity vulnerability in Linux, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2026-05-27.
How severe is CVE-2026-46064?: High severity. CVSS v3 base score is 7.1 out of 10.