VulnerabilityPublished 27 May 2026Updated 6 Nov 2026

CVE-2026-46003: Linux kernel · net: qrtr: ns: Limit the total number of nodes

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in ed29887286aba96d1930f4ddb9f235f6b421073c : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:34 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in ed29887286aba96d1930f4ddb9f235f6b421073c, b703ee903b24974aca4bde99c7d25d66309d35dd, 823310645065bd49666e84af689fa95192819f55 +5

Exploitation evidence

Disclosed: evidence found.
CVE published 27 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 0c2204a4ad710d95d348ea006f14ba926e842ffd, < ed29887286aba96d1930f4ddb9f235f6b421073c	Fixed in ed29887286aba96d1930f4ddb9f235f6b421073c
LinuxLinux	Affected ≥ 0c2204a4ad710d95d348ea006f14ba926e842ffd, < b703ee903b24974aca4bde99c7d25d66309d35dd	Fixed in b703ee903b24974aca4bde99c7d25d66309d35dd
LinuxLinux	Affected ≥ 0c2204a4ad710d95d348ea006f14ba926e842ffd, < 823310645065bd49666e84af689fa95192819f55	Fixed in 823310645065bd49666e84af689fa95192819f55
LinuxLinux	Affected ≥ 0c2204a4ad710d95d348ea006f14ba926e842ffd, < 8022876894d09ae485b499058c3357da683bcc5d	Fixed in 8022876894d09ae485b499058c3357da683bcc5d
LinuxLinux	Affected ≥ 0c2204a4ad710d95d348ea006f14ba926e842ffd, < 4665a29c08e1b36bc9db4814f9dde3d23e8fd1b0	Fixed in 4665a29c08e1b36bc9db4814f9dde3d23e8fd1b0
LinuxLinux	Affected ≥ 0c2204a4ad710d95d348ea006f14ba926e842ffd, < 27d5e84e810b0849d08b9aec68e48570461ce313	Fixed in 27d5e84e810b0849d08b9aec68e48570461ce313

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.

References

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