8.8

CVE-2023-53589: wifi: iwlwifi: mvm: don't trust firmware n_channels

Modified
AliasesUBUNTU-CVE-2023-53589DEBIAN-CVE-2023-53589
Published 04-10-2025Last modified 15-10-2026

Vulnerability summary

CVE-2023-53589 is a high (CVSS 8.8) vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.7% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 8.8, adjacent network); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.24%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 5 · Related 5
SUSE-SU-2025:4111-1SUSE-SU-2025:4139-1SUSE-SU-2025:4149-1SUSE-SU-2025:4189-1SUSE-SU-2025:4320-1

Timeline

  1. 04-10-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

15%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.23% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: adjacent network, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu123 products
  • linuxAll versions (No fix recorded) | < 5.4.0-162.179 | < 5.15.0-83.92
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1109.118 | < 5.15.0-1044.49
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ dcaf9f5ecb6f395152609bdc40660d9b593dca63, < e519a404a5bbba37693cb10fa61794a5fce4fd9b | ≥ dcaf9f5ecb6f395152609bdc40660d9b593dca63, < d0d39bed9e95f27a246be91c5929254ac043ed30 | ≥ dcaf9f5ecb6f395152609bdc40660d9b593dca63, < 05ad5a4d421ce65652fcb24d46b7e273130240d6 | ≥ dcaf9f5ecb6f395152609bdc40660d9b593dca63, < 557ba100d8cf3661ff8d71c0b4a2cba8db555ec2 | ≥ dcaf9f5ecb6f395152609bdc40660d9b593dca63, < c176f03350954b795322de0bfe1d7b514db41f45 | ≥ dcaf9f5ecb6f395152609bdc40660d9b593dca63, < 682b6dc29d98e857e6ca4bbc077c7dc2899b7473 | 4.1
  • linux_kernel≥ 4.1, < 5.4.244 | ≥ 5.5, < 5.10.181 | ≥ 5.11, < 5.15.113 | ≥ 5.16, < 6.1.30 | ≥ 6.2, < 6.3.4 | 6.4:rc1 | 6.4:rc2
Debian1 product
  • linux< 6.1.37-1 | < 6.3.7-1

3 vendors · 126 products

References

10 links