What is CVE-2023-53589?

CVE-2023-53589 is a high-severity vulnerability in Linux. CVSS score: 8.8/10. Published 2025-10-04.

How severe is CVE-2023-53589?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Linux

CVE-2023-53589

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: don't trust firmware n_channels If the firmware sends us a corrupted MCC response with n_channels much larger than the command response can be, we might copy far too much (uninitialized) memory and even crash if the n_channels is large enough to make it run out of the one page allocated for the FW response. Fix that by checking the lengths. Doing a < comparison would be sufficient, but the firmware should be doing it correctly, so check more strictly.

EPSS: 0.001 (4.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions dcaf9f5ecb6f395152609bdc40660d9b593dca63, 4.1, 0
Linux Linux_kernel — versions 6.4

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)

Frequently asked questions

What is CVE-2023-53589?: CVE-2023-53589 is a high-severity vulnerability in Linux. CVSS score: 8.8/10. Published 2025-10-04.
How severe is CVE-2023-53589?: High severity. CVSS v3 base score is 8.8 out of 10.