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CVE-2026-72308— mlxsw: fix refcount leak in mlxsw_sp_port_lag_join()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于mlxsw_sp_port_lag_join()函数在mlxsw_sp_port_lag_index_get()失败时未释放先前获取的lag引用，导致引用计数泄漏。

AI Predicted 3.3 Difficulty: Easy EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1135 · Network Share Discovery

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 0d65fc13042fce6a2d6de58ff0dc9531e8523c07< 3fbeaa8ecd144ad593f9fa1ab4b40a780ad3700b affected
0d65fc13042fce6a2d6de58ff0dc9531e8523c07< 99ff5b0083eae6f774360c4ea6874604e6c9b553 affected
0d65fc13042fce6a2d6de58ff0dc9531e8523c07< 9bf2d6eea26a226f8ebab7baea6f2b018f914560 affected
0d65fc13042fce6a2d6de58ff0dc9531e8523c07< 8b3350eacd9df0597bfe36a594df7b9def0b3edf affected
0d65fc13042fce6a2d6de58ff0dc9531e8523c07< 1cf8a1af42b1f12a30b7abd34fe4fc23b3170e7e affected
0d65fc13042fce6a2d6de58ff0dc9531e8523c07< 2d8b3c3e129973a51ae924bdcf6993a76b828814 affected
0d65fc13042fce6a2d6de58ff0dc9531e8523c07< cab468c3c03f4bcd7530ce2783a4140da14efb7b affected
0d65fc13042fce6a2d6de58ff0dc9531e8523c07< 41c8c1d65b32beacd8d916a22457b4f6e47f45af affected
… +10 more rows
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I. Basic Information for CVE-2026-72308

Vulnerability Information
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Vulnerability Title
mlxsw: fix refcount leak in mlxsw_sp_port_lag_join()
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于mlxsw_sp_port_lag_join()函数在mlxsw_sp_port_lag_index_get()失败时未释放先前获取的lag引用，导致引用计数泄漏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 0d65fc13042fce6a2d6de58ff0dc9531e8523c07 ~ 3fbeaa8ecd144ad593f9fa1ab4b40a780ad3700b -
Linux Linux 4.5 -

II. Public POCs for CVE-2026-72308

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III. Intelligence Information for CVE-2026-72308

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Patches & Fixes for CVE-2026-72308 (7)

Same Patch Batch · Linux · 2026-08-15 · 844 CVEs total

CVE-2026-74280 10.0 CRITICAL crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-74475 10.0 CRITICAL vxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-72407 10.0 CRITICAL geneve: validate inner network offset in geneve_gro_complete()
CVE-2026-74309 10.0 CRITICAL vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-74493 9.8 CRITICAL net/smc: fix socket use-after-free during link group termination
CVE-2026-72466 9.8 CRITICAL xprtrdma: Fix bcall rep leak and unbounded peek
CVE-2026-72463 9.8 CRITICAL xfrm: Fix dev use-after-free in xfrm async resumption
CVE-2026-72069 9.8 CRITICAL locking/rt: Fix the incorrect RCU protection in rt_spin_unlock()
CVE-2026-74345 9.8 CRITICAL RDMA/siw: Fix endpoint/socket association handling
CVE-2026-72065 9.8 CRITICAL net: mana: Validate the packet length reported by the NIC
CVE-2026-72064 9.8 CRITICAL net: mana: Sync page pool RX frags for CPU
CVE-2026-72234 9.8 CRITICAL batman-adv: access unicast_ttvn skb->data only after skb realloc
CVE-2026-74376 9.8 CRITICAL md/raid10: reset read_slot when reusing r10bio for discard
CVE-2026-74255 9.8 CRITICAL tipc: fix UAF in tipc_l2_send_msg()
CVE-2026-72339 9.8 CRITICAL qede: fix off-by-one in BD ring consumption on build_skb failure
CVE-2026-72351 9.8 CRITICAL gue: validate REMCSUM private option length

Showing top 20 of 844 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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