CVE-2026-31563 (GCVE-0-2026-31563)
Vulnerability from cvelistv5 – Published: 2026-04-24 14:35 – Updated: 2026-04-27 14:04
VLAI?
Title
net: macb: Use dev_consume_skb_any() to free TX SKBs
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: macb: Use dev_consume_skb_any() to free TX SKBs
The napi_consume_skb() function is not intended to be called in an IRQ
disabled context. However, after commit 6bc8a5098bf4 ("net: macb: Fix
tx_ptr_lock locking"), the freeing of TX SKBs is performed with IRQs
disabled. To resolve the following call trace, use dev_consume_skb_any()
for freeing TX SKBs:
WARNING: kernel/softirq.c:430 at __local_bh_enable_ip+0x174/0x188, CPU#0: ksoftirqd/0/15
Modules linked in:
CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 7.0.0-rc4-next-20260319-yocto-standard-dirty #37 PREEMPT
Hardware name: ZynqMP ZCU102 Rev1.1 (DT)
pstate: 200000c5 (nzCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __local_bh_enable_ip+0x174/0x188
lr : local_bh_enable+0x24/0x38
sp : ffff800082b3bb10
x29: ffff800082b3bb10 x28: ffff0008031f3c00 x27: 000000000011ede0
x26: ffff000800a7ff00 x25: ffff800083937ce8 x24: 0000000000017a80
x23: ffff000803243a78 x22: 0000000000000040 x21: 0000000000000000
x20: ffff000800394c80 x19: 0000000000000200 x18: 0000000000000001
x17: 0000000000000001 x16: ffff000803240000 x15: 0000000000000000
x14: ffffffffffffffff x13: 0000000000000028 x12: ffff000800395650
x11: ffff8000821d1528 x10: ffff800081c2bc08 x9 : ffff800081c1e258
x8 : 0000000100000301 x7 : ffff8000810426ec x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000008 x1 : 0000000000000200 x0 : ffff8000810428dc
Call trace:
__local_bh_enable_ip+0x174/0x188 (P)
local_bh_enable+0x24/0x38
skb_attempt_defer_free+0x190/0x1d8
napi_consume_skb+0x58/0x108
macb_tx_poll+0x1a4/0x558
__napi_poll+0x50/0x198
net_rx_action+0x1f4/0x3d8
handle_softirqs+0x16c/0x560
run_ksoftirqd+0x44/0x80
smpboot_thread_fn+0x1d8/0x338
kthread+0x120/0x150
ret_from_fork+0x10/0x20
irq event stamp: 29751
hardirqs last enabled at (29750): [<ffff8000813be184>] _raw_spin_unlock_irqrestore+0x44/0x88
hardirqs last disabled at (29751): [<ffff8000813bdf60>] _raw_spin_lock_irqsave+0x38/0x98
softirqs last enabled at (29150): [<ffff8000800f1aec>] handle_softirqs+0x504/0x560
softirqs last disabled at (29153): [<ffff8000800f2fec>] run_ksoftirqd+0x44/0x80
Severity ?
7.5 (High)
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
aeeafeb29b1b270302a9a85a13f7d70a68a3b9e6 , < 92e7081f0c79d9073087e54bab745bb184192c2e
(git)
Affected: 5430388a81113e62a2d48b5d7dc1e76231908ebf , < 78c8b090a3d5c1689dc989861b0163180db2b3f8 (git) Affected: 7db8aa3fc4ed0a2928246747b2514b0741a8187e , < 984350b37372f79f71d4f0a5264c640e40daf9ce (git) Affected: 6bc8a5098bf4a365c4086a4a4130bfab10a58260 , < f4bc91398b579730284328322365afa77a9d568f (git) Affected: 6bc8a5098bf4a365c4086a4a4130bfab10a58260 , < ca4d05afb4683d685bb2c6fccae4386c478f524a (git) Affected: 6bc8a5098bf4a365c4086a4a4130bfab10a58260 , < 647b8a2fe474474704110db6bd07f7a139e621eb (git) Affected: a4cb0a15ab8e6d06c08229a2c7bdbe1f2454473f (git) |
|||||||
|
|||||||||
{
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"value": "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): [\u003cffff8000813be184\u003e] _raw_spin_unlock_irqrestore+0x44/0x88\n hardirqs last disabled at (29751): [\u003cffff8000813bdf60\u003e] _raw_spin_lock_irqsave+0x38/0x98\n softirqs last enabled at (29150): [\u003cffff8000800f1aec\u003e] handle_softirqs+0x504/0x560\n softirqs last disabled at (29153): [\u003cffff8000800f2fec\u003e] run_ksoftirqd+0x44/0x80"
}
],
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"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
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}
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"providerMetadata": {
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},
{
"url": "https://git.kernel.org/stable/c/647b8a2fe474474704110db6bd07f7a139e621eb"
}
],
"title": "net: macb: Use dev_consume_skb_any() to free TX SKBs",
"x_generator": {
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}
}
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"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2026-31563",
"datePublished": "2026-04-24T14:35:44.610Z",
"dateReserved": "2026-03-09T15:48:24.116Z",
"dateUpdated": "2026-04-27T14:04:05.798Z",
"state": "PUBLISHED"
},
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"date": "2026-05-04",
"epss": "0.0007",
"percentile": "0.21056"
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"nvd": "{\"cve\":{\"id\":\"CVE-2026-31563\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-04-24T15:16:30.720\",\"lastModified\":\"2026-04-27T20:31:02.200\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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): [\u003cffff8000813be184\u003e] _raw_spin_unlock_irqrestore+0x44/0x88\\n hardirqs last disabled at (29751): [\u003cffff8000813bdf60\u003e] _raw_spin_lock_irqsave+0x38/0x98\\n softirqs last enabled at (29150): [\u003cffff8000800f1aec\u003e] handle_softirqs+0x504/0x560\\n softirqs last disabled at (29153): [\u003cffff8000800f2fec\u003e] 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}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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