CVE-2026-43491
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
36/100
Published: 2026-05-19
Modified: 2026-11-06
First seen: 2026-11-06
Status: active
Attack Surface
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
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.
Affected Software (10)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 0c2204a4ad710d95d348ea006f14ba926e842ffd < b48fc702b20233b809f01053232c3cd5083c97b4 |
| Linux | Linux | 0c2204a4ad710d95d348ea006f14ba926e842ffd < 991c431077b19176d3fe3bb54054c063776a8cdc |
| Linux | Linux | 0c2204a4ad710d95d348ea006f14ba926e842ffd < 94914731ca0b99899dceadd80d2df00584a688ca |
| Linux | Linux | 0c2204a4ad710d95d348ea006f14ba926e842ffd < e6f6cd501fb54060940a6eb3f4103eeb5e426ae7 |
| Linux | Linux | 0c2204a4ad710d95d348ea006f14ba926e842ffd < 3efaad55cad1ded429e3a873bfece389058a526b |
| Linux | Linux | 0c2204a4ad710d95d348ea006f14ba926e842ffd < 35fb4a0c077c5d1049c2628b769e0a1b1e65df0d |
| Linux | Linux | 0c2204a4ad710d95d348ea006f14ba926e842ffd < 868202aa2adae427060a42d5bd663b4d782ec02c |
| Linux | Linux | 0c2204a4ad710d95d348ea006f14ba926e842ffd < d5ee2ff98322337951c56398e79d51815acbf955 |
| Linux | Linux | 5.7 |
| linux | linux_kernel | 5.7 – 6.6.140 |