Answer in brief
CVE-2026-46003 records a Medium severity (CVSS 5.5) vulnerability in net: qrtr: ns: Limit the total number of nodes. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=0c2204a4ad710d95d348ea006f14ba926e842ffd <b703ee903b24974aca4bde99c7d25d66309d35dd || >=0c2204a4ad710d95d348ea006f14ba926e842ffd <823310645065bd49666e84af689fa95192819f55 || >=0c2204a4ad710d95d348ea006f14ba926e842ffd <ed29887286aba96d1930f4ddb9f235f6b421073c || >=0c2204a4ad710d95d348ea006f14ba926e842ffd <4c46413661431aa60fb134cd4ecdf8beaa39f824 || >=0c2204a4ad710d95d348ea006f14ba926e842ffd <4665a29c08e1b36bc9db4814f9dde3d23e8fd1b0 || >=0c2204a4ad710d95d348ea006f14ba926e842ffd <5cf6d5e5e3b804a44692fbf548a5179442e2e923 || >=0c2204a4ad710d95d348ea006f14ba926e842ffd <8022876894d09ae485b499058c3357da683bcc5d || >=0c2204a4ad710d95d348ea006f14ba926e842ffd <27d5e84e810b0849d08b9aec68e48570461ce313 | b703ee903b24974aca4bde99c7d25d66309d35dd, 823310645065bd49666e84af689fa95192819f55, ed29887286aba96d1930f4ddb9f235f6b421073c, 4c46413661431aa60fb134cd4ecdf8beaa39f824, 4665a29c08e1b36bc9db4814f9dde3d23e8fd1b0, 5cf6d5e5e3b804a44692fbf548a5179442e2e923, 8022876894d09ae485b499058c3357da683bcc5d, 27d5e84e810b0849d08b9aec68e48570461ce313 |
| Linux/Linuxgeneric | 5.7 | Not reported |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <* | * |
Published upstream
May 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 19, 2026
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.
Quoted source text, attributed separately from HOL analysis.