CVE-2026-46026net: qrtr: ns: Limit the maximum number of lookups
Updated under an hour ago ()
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It affects Linux and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- 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
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 0c2204a4ad710d95d348ea006f14ba926e842ffd before bd69e0e8a7643ba5385f19f479e8e3da71f8d495; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before 91cb30b6bb1880ba0748ca059bef50b8ac13793d; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before 6e3675251fcea06caecc61eb76462467558adfa6; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before 0dbec101a7076e9b1e4bd1876f7cf07c56ff4ce3; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before 76adf8f69b0bb3ab20be7c58f5d555027332d113; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before 20855cef7e659ef84ac73251256fa530819b2346; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before 2b930bc77e00cb27e1d6e1d497b3b596283465ef; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before 5640227d9a21c6a8be249a10677b832e7f40dc55 | CNA record |
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name) | all versions | CISA ADP |
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/bd69e0e8a7643ba5385f19f479e8e3da71f8d495
- https://git.kernel.org/stable/c/91cb30b6bb1880ba0748ca059bef50b8ac13793d
- https://git.kernel.org/stable/c/6e3675251fcea06caecc61eb76462467558adfa6
- https://git.kernel.org/stable/c/0dbec101a7076e9b1e4bd1876f7cf07c56ff4ce3patch
- https://git.kernel.org/stable/c/76adf8f69b0bb3ab20be7c58f5d555027332d113patch
- https://git.kernel.org/stable/c/20855cef7e659ef84ac73251256fa530819b2346patch
- https://git.kernel.org/stable/c/2b930bc77e00cb27e1d6e1d497b3b596283465efpatch
- https://git.kernel.org/stable/c/5640227d9a21c6a8be249a10677b832e7f40dc55patch
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
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.