CVE-2026-72308

mlxsw: fix refcount leak in mlxsw_sp_port_lag_join()

N/A

Published: August 15, 2026 at 05:55 AM UTC

Updated: August 23, 2026 at 01:17 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

N/A

Exploit prediction

EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: mlxsw: fix refcount leak in mlxsw_sp_port_lag_join() When mlxsw_sp_port_lag_index_get() fails, mlxsw_sp_port_lag_join() returns an error without releasing the lag reference obtained by the earlier mlxsw_sp_lag_get(). All other error paths in the function jump to the cleanup label that ends with mlxsw_sp_lag_put(), so this is a single missed release. Fix the leak by replacing the bare 'return err' with a goto to the existing error cleanup label, which will drop the reference safely.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.5 ≤ v < 5.10.2664.5 ≤ v < 5.15.2174.5 ≤ v < 6.1.1844.5 ≤ v < 6.12.974.5 ≤ v < 6.18.404.5 ≤ v < 6.6.1454.5 ≤ v < 7.1.54.5 ≤ v < 7.20d65fc13042fce6a2d6de58ff0dc9531e8523c074.5

Vendor states this is fixed in 1cf8a1af42b1f12a30b7abd34fe4fc23b3170e7e (fixed)

Vendor states this is fixed in 2d8b3c3e129973a51ae924bdcf6993a76b828814 (fixed)

Vendor states this is fixed in 3fbeaa8ecd144ad593f9fa1ab4b40a780ad3700b (fixed)

Vendor states this is fixed in 41c8c1d65b32beacd8d916a22457b4f6e47f45af (fixed)

Vendor states this is fixed in 8b3350eacd9df0597bfe36a594df7b9def0b3edf (fixed)

Vendor states this is fixed in 99ff5b0083eae6f774360c4ea6874604e6c9b553 (fixed)

Vendor states this is fixed in 9bf2d6eea26a226f8ebab7baea6f2b018f914560 (fixed)

Vendor states this is fixed in cab468c3c03f4bcd7530ce2783a4140da14efb7b (fixed)

Vendor states this is fixed in 4.5 (unaffected)

Vendor states this is fixed in 5.10.266 (unaffected)

Vendor states this is fixed in 5.15.217 (unaffected)

Vendor states this is fixed in 6.1.184 (unaffected)