CVE-2026-46153
Medium
Description
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.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedMay 28, 2026
First seenMay 28, 2026
How to fix
Update
- linux linux_kernel7.0.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 2.6.12.1 ≤ v < 7.0.7, 2.6.12 | 7.0.7 |
| microsoft azl3_kernel_6.6.139.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.150.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.157.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.141.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.143.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.144.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.145.2-1 | No range specified | — |
| microsoft azl3_kernel_6.6.152.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.159.1-1 | No range specified | — |
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