Medium severity · published May 27, 2026
CVE-2026-46003
net: qrtr: ns: Limit the total number of nodes
5.5
CVSS
0.1%
EPSS
No
On KEV
Description
In the Linux kernel, the following vulnerability has been resolved:
net: qrtr: ns: Limit the total number of nodes
Currently, the nameserver doesn't limit the number of nodes it handles.
This can be an attack vector if a malicious client starts registering
random nodes, leading to memory exhaustion.
Hence, limit the maximum number of nodes to 64. 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 vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 2% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
5.7 before 6.6.140; 6.7 before 6.12.86; 6.13 before 6.18.27; 6.19 before 7.0.4 · source: NVD
LI
Linux · Linux
0c2204a4ad710d95d348ea006f14ba926e842ffd before b703ee903b24974aca4bde99c7d25d66309d35dd; 0c2204a4ad710d95d348ea006f14ba926e842ffd before 823310645065bd49666e84af689fa95192819f55; 0c2204a4ad710d95d348ea006f14ba926e842ffd before ed29887286aba96d1930f4ddb9f235f6b421073c; 0c2204a4ad710d95d348ea006f14ba926e842ffd before 4c46413661431aa60fb134cd4ecdf8beaa39f824; 0c2204a4ad710d95d348ea006f14ba926e842ffd before 4665a29c08e1b36bc9db4814f9dde3d23e8fd1b0; 0c2204a4ad710d95d348ea006f14ba926e842ffd before 5cf6d5e5e3b804a44692fbf548a5179442e2e923; +3 more · source: vendor
SS
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem · Siemens
0 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46003
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-46003
Patch
https://git.kernel.org/stable/c/27d5e84e810b0849d08b9aec68e48570461ce313
Patch
https://git.kernel.org/stable/c/4665a29c08e1b36bc9db4814f9dde3d23e8fd1b0
Patch
https://git.kernel.org/stable/c/4c46413661431aa60fb134cd4ecdf8beaa39f824
Patch
https://git.kernel.org/stable/c/5cf6d5e5e3b804a44692fbf548a5179442e2e923
Patch
https://git.kernel.org/stable/c/8022876894d09ae485b499058c3357da683bcc5d
git.kernel.org
https://git.kernel.org/stable/c/823310645065bd49666e84af689fa95192819f55
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