CVE-2026-46026

net: qrtr: ns: Limit the maximum number of lookups

State: Published
Severity: Not scored
Published: May 27, 2026
Updated: Oct 15, 2026
Reserved: May 13, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

net: qrtr: ns: Limit the maximum number of lookups

Current code does no bound checking on the number of lookups a client can perform. Though the code restricts the lookups to local clients, there is still a possibility of a malicious local client sending a flood of NEW_LOOKUP messages over the same socket.

Fix this issue by limiting the maximum number of lookups to 64 globally. Since the nameserver allows only atmost one local observer, this global lookup count will ensure that the lookups stay within the limit.

Note that, limit of 64 is chosen based on the current platform requirements. If requirement changes in the future, this limit can be increased.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	0c2204a4ad710d95d348ea006f14ba926e842ffd to before bd69e0e8a7643ba5385f19f479e8e3da71f8d495Affected 0c2204a4ad710d95d348ea006f14ba926e842ffd to before 91cb30b6bb1880ba0748ca059bef50b8ac13793dAffected 0c2204a4ad710d95d348ea006f14ba926e842ffd to before 6e3675251fcea06caecc61eb76462467558adfa6Affected 0c2204a4ad710d95d348ea006f14ba926e842ffd to before 0dbec101a7076e9b1e4bd1876f7cf07c56ff4ce3Affected 0c2204a4ad710d95d348ea006f14ba926e842ffd to before 76adf8f69b0bb3ab20be7c58f5d555027332d113Affected 0c2204a4ad710d95d348ea006f14ba926e842ffd to before 20855cef7e659ef84ac73251256fa530819b2346Affected 0c2204a4ad710d95d348ea006f14ba926e842ffd to before 2b930bc77e00cb27e1d6e1d497b3b596283465efAffected 0c2204a4ad710d95d348ea006f14ba926e842ffd to before 5640227d9a21c6a8be249a10677b832e7f40dc55Affected
LinuxLinux	5.7Affected before 5.7Not affected 5.10.259 through 5.10.Not affected 5.15.210 through 5.15.Not affected 6.1.176 through 6.1.Not affected 6.6.140 through 6.6.Not affected 6.12.86 through 6.12.Not affected 6.18.27 through 6.18.Not affected 7.0.4 through 7.0.*Not affected 7.1 and laterNot affected

Product

Versions

LinuxLinux

0c2204a4ad710d95d348ea006f14ba926e842ffd to before bd69e0e8a7643ba5385f19f479e8e3da71f8d495Affected
0c2204a4ad710d95d348ea006f14ba926e842ffd to before 91cb30b6bb1880ba0748ca059bef50b8ac13793dAffected
0c2204a4ad710d95d348ea006f14ba926e842ffd to before 6e3675251fcea06caecc61eb76462467558adfa6Affected
0c2204a4ad710d95d348ea006f14ba926e842ffd to before 0dbec101a7076e9b1e4bd1876f7cf07c56ff4ce3Affected
0c2204a4ad710d95d348ea006f14ba926e842ffd to before 76adf8f69b0bb3ab20be7c58f5d555027332d113Affected
0c2204a4ad710d95d348ea006f14ba926e842ffd to before 20855cef7e659ef84ac73251256fa530819b2346Affected
0c2204a4ad710d95d348ea006f14ba926e842ffd to before 2b930bc77e00cb27e1d6e1d497b3b596283465efAffected
0c2204a4ad710d95d348ea006f14ba926e842ffd to before 5640227d9a21c6a8be249a10677b832e7f40dc55Affected

LinuxLinux

5.7Affected
before 5.7Not affected
5.10.259 through 5.10.*Not affected
5.15.210 through 5.15.*Not affected
6.1.176 through 6.1.*Not affected
6.6.140 through 6.6.*Not affected
6.12.86 through 6.12.*Not affected
6.18.27 through 6.18.*Not affected
7.0.4 through 7.0.*Not affected
7.1 and laterNot affected

References

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