CVE-2026-46153

8021q: delete cleared egress QoS mappings

CVE-2026-46153 is fixed in linux on 1 platform by DEBIAN-CVE-2026-46153 (version 7.0.7-1), released June 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
5.5
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0011
1st percentile

In the Linux kernel, the following vulnerability has been resolved: 8021q: delete cleared egress QoS mappings vlan_dev_set_egress_priority() currently keeps cleared egress priority mappings in the hash as tombstones. Repeated set/clear cycles with distinct skb priorities therefore accumulate mapping nodes until device teardown and leak memory. Delete mappings when vlan_prio is cleared instead of keeping tombstones. Now that the egress mapping lists are RCU protected, the node can be unlinked safely and freed after a grace period.

Where it's fixed

ProductFixed inFixReleased
Linux
linux · Debian 14 7.0.7-1 DEBIAN-CVE-2026-46153 Jun 24, 2026

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