CVE-2026-72017

net: macb: drop in-flight Tx SKBs on close

N/A

Published: August 15, 2026 at 05:51 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: net: macb: drop in-flight Tx SKBs on close The MACB driver has since forever leaked the outgoing SKBs that have not yet been marked as completed. They live in queue->tx_skb which gets freed without remorse nor checking. macb_free_consistent() gets called in a few codepaths, but only close will trigger the added expressions. In macb_open() and macb_alloc_consistent() failure cases, queues' tx_skb just got allocated and are empty.

Affected

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

Linux Kernel · Linux

95%

2.6.20 ≤ v < 6.1.1842.6.20 ≤ v < 6.12.1012.6.20 ≤ v < 6.18.402.6.20 ≤ v < 6.6.1482.6.20 ≤ v < 7.1.52.6.20 ≤ v < 7.22.6.2089e5785fc8a6b9eafd37f2318a9a76d479c796be

Vendor states this is fixed in 0e9797dc4ebdefe1b7f931b1f92d5e98e5dbf655 (fixed)

Vendor states this is fixed in 109241d9880488aafd8e104832b4d4859ad57244 (fixed)

Vendor states this is fixed in 2143fdc0ce27adbb1caaa1a97e0bfb9f3750aef4 (fixed)

Vendor states this is fixed in 26b131b2d5b55a81ef6182769d28105a870c0eb2 (fixed)

Vendor states this is fixed in 27f575836cfebbf872dec020428742b10650a955 (fixed)

Vendor states this is fixed in 6124bd785073659c99385094657b77382ebce11b (fixed)

Vendor states this is fixed in 2.6.20 (unaffected)

Vendor states this is fixed in 6.1.184 (unaffected)

Vendor states this is fixed in 6.12.101 (unaffected)

Vendor states this is fixed in 6.18.40 (unaffected)

Vendor states this is fixed in 6.6.148 (unaffected)

Vendor states this is fixed in 7.1.5 (unaffected)