Medium 5.5Published May 27, 2026

CVE-2026-46038net: qrtr: ns: Free the node during ctrl_cmd_bye()

Updated under an hour ago (Oct 27, 2026, 6:00 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: net: qrtr: ns: Free the node during ctrl_cmd_bye() A node sends the BYE packet when it is about to go down. So the nameserver should advertise the removal of the node to all remote and local observers and free the node finally. But currently, the nameserver doesn't free the node memory even after processing the BYE packet. This causes the node memory to leak. Hence, remove the node from Xarray list and free the node memory during both success and failure case of ctrl_cmd_bye().

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 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 0c2204a4ad710d95d348ea006f14ba926e842ffd before 6c9cca46acb6f22e63f015ea7b2ed6032d2badf5; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before a5a454f3364877b22f0e5a165df8b3702ff96ae7; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before 25d580a46b079a7963ff024a5195e547baf12b64; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before ff78ed177a66763085e3214d6fbe13ca8f0b3f11; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before 65932f5102bb5377db36c8a4f0c28179a1967a9a; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before 154fc7fe3f62c46891c3c4302f4b5b5391c932e6; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before 076e4b162d6caba12c229e7f262df5b6881162b0; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before 68efba36446a7774ea5b971257ade049272a07ac	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

References

https://git.kernel.org/stable/c/6c9cca46acb6f22e63f015ea7b2ed6032d2badf5
https://git.kernel.org/stable/c/a5a454f3364877b22f0e5a165df8b3702ff96ae7
https://git.kernel.org/stable/c/25d580a46b079a7963ff024a5195e547baf12b64
https://git.kernel.org/stable/c/ff78ed177a66763085e3214d6fbe13ca8f0b3f11	patch
https://git.kernel.org/stable/c/65932f5102bb5377db36c8a4f0c28179a1967a9a	patch
https://git.kernel.org/stable/c/154fc7fe3f62c46891c3c4302f4b5b5391c932e6	patch
https://git.kernel.org/stable/c/076e4b162d6caba12c229e7f262df5b6881162b0	patch
https://git.kernel.org/stable/c/68efba36446a7774ea5b971257ade049272a07ac	patch
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.