net: macb: Use dev_consume_skb_any() to free TX SKBs_CVE-2026-31563

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: macb: Use dev_consume_skb_any() to free TX SKBs\n\nThe napi_consume_skb() function is not intended to be called in an IRQ\ndisabled context. However, after commit 6bc8a5098bf4 (\"net: macb: Fix\ntx_ptr_lock locking\"), the freeing of TX SKBs is performed with IRQs\ndisabled. To resolve the following call trace, use dev_consume_skb_any()\nfor freeing TX SKBs:\n   WARNING: kernel/softirq.c:430 at __local_bh_enable_ip+0x174/0x188, CPU#0: ksoftirqd/0/15\n   Modules linked in:\n   CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 7.0.0-rc4-next-20260319-yocto-standard-dirty #37 PREEMPT\n   Hardware name: ZynqMP ZCU102 Rev1.1 (DT)\n   pstate: 200000c5 (nzCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n   pc : __local_bh_enable_ip+0x174/0x188\n   lr : local_bh_enable+0x24/0x38\n   sp : ffff800082b3bb10\n   x29: ffff800082b3bb10 x28: ffff0008031f3c00 x27: 000000000011ede0\n   x26: ffff000800a7ff00 x25: ffff800083937ce8 x24: 0000000000017a80\n   x23: ffff000803243a78 x22: 0000000000000040 x21: 0000000000000000\n   x20: ffff000800394c80 x19: 0000000000000200 x18: 0000000000000001\n   x17: 0000000000000001 x16: ffff000803240000 x15: 0000000000000000\n   x14: ffffffffffffffff x13: 0000000000000028 x12: ffff000800395650\n   x11: ffff8000821d1528 x10: ffff800081c2bc08 x9 : ffff800081c1e258\n   x8 : 0000000100000301 x7 : ffff8000810426ec x6 : 0000000000000000\n   x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000\n   x2 : 0000000000000008 x1 : 0000000000000200 x0 : ffff8000810428dc\n   Call trace:\n    __local_bh_enable_ip+0x174/0x188 (P)\n    local_bh_enable+0x24/0x38\n    skb_attempt_defer_free+0x190/0x1d8\n    napi_consume_skb+0x58/0x108\n    macb_tx_poll+0x1a4/0x558\n    __napi_poll+0x50/0x198\n    net_rx_action+0x1f4/0x3d8\n    handle_softirqs+0x16c/0x560\n    run_ksoftirqd+0x44/0x80\n    smpboot_thread_fn+0x1d8/0x338\n    kthread+0x120/0x150\n    ret_from_fork+0x10/0x20\n   irq event stamp: 29751\n   hardirqs last  enabled at (29750): [<ffff8000813be184>] _raw_spin_unlock_irqrestore+0x44/0x88\n   hardirqs last disabled at (29751): [<ffff8000813bdf60>] _raw_spin_lock_irqsave+0x38/0x98\n   softirqs last  enabled at (29150): [<ffff8000800f1aec>] handle_softirqs+0x504/0x560\n   softirqs last disabled at (29153): [<ffff8000800f2fec>] run_ksoftirqd+0x44/0x80",
    "published": "2026-04-24T14:35:44.610Z",
    "modified": "2026-04-27T14:04:05.798Z",
    "type": "cve",
    "title": "net: macb: Use dev_consume_skb_any() to free TX SKBs",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/92e7081f0c79d9073087e54bab745bb184192c2e\nhttps://git.kernel.org/stable/c/78c8b090a3d5c1689dc989861b0163180db2b3f8\nhttps://git.kernel.org/stable/c/984350b37372f79f71d4f0a5264c640e40daf9ce\nhttps://git.kernel.org/stable/c/f4bc91398b579730284328322365afa77a9d568f\nhttps://git.kernel.org/stable/c/ca4d05afb4683d685bb2c6fccae4386c478f524a\nhttps://git.kernel.org/stable/c/647b8a2fe474474704110db6bd07f7a139e621eb",
    "id": "CVE-2026-31563",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux aeeafeb29b1b270302a9a85a13f7d70a68a3b9e6\nLinux Linux 5430388a81113e62a2d48b5d7dc1e76231908ebf\nLinux Linux 7db8aa3fc4ed0a2928246747b2514b0741a8187e\nLinux Linux 6bc8a5098bf4a365c4086a4a4130bfab10a58260\nLinux Linux 6bc8a5098bf4a365c4086a4a4130bfab10a58260\nLinux Linux 6bc8a5098bf4a365c4086a4a4130bfab10a58260\nLinux Linux a4cb0a15ab8e6d06c08229a2c7bdbe1f2454473f\nLinux Linux 6.17",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
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            "privilegesRequired": "",
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            "confidentialityImpact": "",
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            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "aeeafeb29b1b270302a9a85a13f7d70a68a3b9e6",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
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    "ai_version": "",
    "ai_score": 0
}