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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.002.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
89e5785fc8a6b9eafd37f2318a9a76d479c796be affected < 6124bd785073659c99385094657b77382ebce11b
89e5785fc8a6b9eafd37f2318a9a76d479c796be affected < 2143fdc0ce27adbb1caaa1a97e0bfb9f3750aef4
89e5785fc8a6b9eafd37f2318a9a76d479c796be affected < 26b131b2d5b55a81ef6182769d28105a870c0eb2
89e5785fc8a6b9eafd37f2318a9a76d479c796be affected < 109241d9880488aafd8e104832b4d4859ad57244
89e5785fc8a6b9eafd37f2318a9a76d479c796be affected < 27f575836cfebbf872dec020428742b10650a955
Linux Linux affected
Version Status Constraints
2.6.20 affected —
0 unaffected < 2.6.20
6.6.148 unaffected ≤ 6.6.*
6.12.101 unaffected ≤ 6.12.*
6.18.40 unaffected ≤ 6.18.*
7.1.5 unaffected ≤ 7.1.*
7.2-rc3 unaffected ≤ *

No data.

No data.

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/109241d9880488aafd8e104832b4d4859ad57244 cve-icon cve-icon
https://git.kernel.org/stable/c/2143fdc0ce27adbb1caaa1a97e0bfb9f3750aef4 cve-icon cve-icon
https://git.kernel.org/stable/c/26b131b2d5b55a81ef6182769d28105a870c0eb2 cve-icon cve-icon
https://git.kernel.org/stable/c/27f575836cfebbf872dec020428742b10650a955 cve-icon cve-icon
https://git.kernel.org/stable/c/6124bd785073659c99385094657b77382ebce11b cve-icon cve-icon
History

Sat, 15 Aug 2026 06:00:00 +0000

Type Values Removed Values Added
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.
Title net: macb: drop in-flight Tx SKBs on close
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-15T05:51:44.698Z

Reserved: 2026-08-09T03:40:39.900Z

Link: CVE-2026-72017

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-15T06:21:00.550

Modified: 2026-08-15T06:21:00.550

Link: CVE-2026-72017

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-15T13:00:05Z

Weaknesses

No weakness.