CVE-2026-43491

Advisory lineage Upstream: 0 Downstream: 5
Awaiting Analysis
Published: 19 May 2026, 10:44
Last modified:14 Jun 2026, 17:45

Vulnerability Summary

Overall Risk (default)
minimal
0/100
CVSS Score
No data
EPSS Score
0.19% LOW
0% probability +0.16%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

19 May 2026, 10:44
Published
Vulnerability first disclosed
14 Jun 2026, 17:45
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: net: qrtr: ns: Limit the maximum server registration per node Current code does no bound checking on the number of servers added per node. A malicious client can flood NEW_SERVER messages and exhaust memory. Fix this issue by limiting the maximum number of server registrations to 256 per node. If the NEW_SERVER message is received for an old port, then don't restrict it as it will get replaced. While at it, also rate limit the error messages in the failure path of qrtr_ns_worker(). Note that the limit of 256 is chosen based on the current platform requirements. If requirement changes in the future, this limit can be increased.

EPSS Trends

Current EPSS score: 0.19%• Percentile: 8%

Affected Systems

  • linux•linux

    ≥ 0c2204a4ad710d95d348ea006f14ba926e842ffd, < e6f6cd501fb54060940a6eb3f4103eeb5e426ae7 | ≥ 0c2204a4ad710d95d348ea006f14ba926e842ffd, < 3efaad55cad1ded429e3a873bfece389058a526b | ≥ 0c2204a4ad710d95d348ea006f14ba926e842ffd, < 35fb4a0c077c5d1049c2628b769e0a1b1e65df0d | ≥ 0c2204a4ad710d95d348ea006f14ba926e842ffd, < 868202aa2adae427060a42d5bd663b4d782ec02c | ≥ 0c2204a4ad710d95d348ea006f14ba926e842ffd, < d5ee2ff98322337951c56398e79d51815acbf955 | 5.7

References (5)