CVE-2026-43491In 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 pe…
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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.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Aug 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
linux linux_kernel linux:linux_kernel | from 5.7 before 6.6.140; from 6.7 before 6.12.86; from 6.13 before 6.18.27; from 6.19 before 7.0.4 | NVD |
References
- https://git.kernel.org/stable/c/35fb4a0c077c5d1049c2628b769e0a1b1e65df0dpatch
- https://git.kernel.org/stable/c/3efaad55cad1ded429e3a873bfece389058a526bpatch
- https://git.kernel.org/stable/c/868202aa2adae427060a42d5bd663b4d782ec02cpatch
- https://git.kernel.org/stable/c/94914731ca0b99899dceadd80d2df00584a688ca
- https://git.kernel.org/stable/c/991c431077b19176d3fe3bb54054c063776a8cdc
- https://git.kernel.org/stable/c/b48fc702b20233b809f01053232c3cd5083c97b4
- https://git.kernel.org/stable/c/d5ee2ff98322337951c56398e79d51815acbf955patch
- https://git.kernel.org/stable/c/e6f6cd501fb54060940a6eb3f4103eeb5e426ae7patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.