FKIE_CVE-2026-43213
Vulnerability from fkie_nvd - Published: 2026-05-06 12:16 - Updated: 2026-06-17 10:49
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
wifi: rtw89: pci: validate sequence number of TX release report
Hardware rarely reports abnormal sequence number in TX release report,
which will access out-of-bounds of wd_ring->pages array, causing NULL
pointer dereference.
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0
Oops: 0000 [#1] PREEMPT SMP NOPTI
CPU: 1 PID: 1085 Comm: irq/129-rtw89_p Tainted: G S U
6.1.145-17510-g2f3369c91536 #1 (HASH:69e8 1)
Call Trace:
<IRQ>
rtw89_pci_release_tx+0x18f/0x300 [rtw89_pci (HASH:4c83 2)]
rtw89_pci_napi_poll+0xc2/0x190 [rtw89_pci (HASH:4c83 2)]
net_rx_action+0xfc/0x460 net/core/dev.c:6578 net/core/dev.c:6645 net/core/dev.c:6759
handle_softirqs+0xbe/0x290 kernel/softirq.c:601
? rtw89_pci_interrupt_threadfn+0xc5/0x350 [rtw89_pci (HASH:4c83 2)]
__local_bh_enable_ip+0xeb/0x120 kernel/softirq.c:499 kernel/softirq.c:423
</IRQ>
<TASK>
rtw89_pci_interrupt_threadfn+0xf8/0x350 [rtw89_pci (HASH:4c83 2)]
? irq_thread+0xa7/0x340 kernel/irq/manage.c:0
irq_thread+0x177/0x340 kernel/irq/manage.c:1205 kernel/irq/manage.c:1314
? thaw_kernel_threads+0xb0/0xb0 kernel/irq/manage.c:1202
? irq_forced_thread_fn+0x80/0x80 kernel/irq/manage.c:1220
kthread+0xea/0x110 kernel/kthread.c:376
? synchronize_irq+0x1a0/0x1a0 kernel/irq/manage.c:1287
? kthread_associate_blkcg+0x80/0x80 kernel/kthread.c:331
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>
To prevent crash, validate rpp_info.seq before using.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/wireless/realtek/rtw89/pci.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "ef7fa19809b2d892d45da53f90ac698d13c367fd",
"status": "affected",
"version": "e3ec7017f6a20d12ddd9fe23d345ebb7b8c104dd",
"versionType": "git"
},
{
"lessThan": "b342dd13aedccb0dd27365f6cc63a262f42394ce",
"status": "affected",
"version": "e3ec7017f6a20d12ddd9fe23d345ebb7b8c104dd",
"versionType": "git"
},
{
"lessThan": "957eda596c7665f2966970fd1dcc35fe299b38e8",
"status": "affected",
"version": "e3ec7017f6a20d12ddd9fe23d345ebb7b8c104dd",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/net/wireless/realtek/rtw89/pci.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.16"
},
{
"lessThan": "5.16",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.16",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "29ED84C1-BD97-40F4-B3BE-7ACD9AA05DC4",
"versionEndExcluding": "6.18.16",
"versionStartIncluding": "5.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67",
"versionEndExcluding": "6.19.6",
"versionStartIncluding": "6.19",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw89: pci: validate sequence number of TX release report\n\nHardware rarely reports abnormal sequence number in TX release report,\nwhich will access out-of-bounds of wd_ring-\u003epages array, causing NULL\npointer dereference.\n\n BUG: kernel NULL pointer dereference, address: 0000000000000000\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 0 P4D 0\n Oops: 0000 [#1] PREEMPT SMP NOPTI\n CPU: 1 PID: 1085 Comm: irq/129-rtw89_p Tainted: G S U\n 6.1.145-17510-g2f3369c91536 #1 (HASH:69e8 1)\n Call Trace:\n \u003cIRQ\u003e\n rtw89_pci_release_tx+0x18f/0x300 [rtw89_pci (HASH:4c83 2)]\n rtw89_pci_napi_poll+0xc2/0x190 [rtw89_pci (HASH:4c83 2)]\n net_rx_action+0xfc/0x460 net/core/dev.c:6578 net/core/dev.c:6645 net/core/dev.c:6759\n handle_softirqs+0xbe/0x290 kernel/softirq.c:601\n ? rtw89_pci_interrupt_threadfn+0xc5/0x350 [rtw89_pci (HASH:4c83 2)]\n __local_bh_enable_ip+0xeb/0x120 kernel/softirq.c:499 kernel/softirq.c:423\n \u003c/IRQ\u003e\n \u003cTASK\u003e\n rtw89_pci_interrupt_threadfn+0xf8/0x350 [rtw89_pci (HASH:4c83 2)]\n ? irq_thread+0xa7/0x340 kernel/irq/manage.c:0\n irq_thread+0x177/0x340 kernel/irq/manage.c:1205 kernel/irq/manage.c:1314\n ? thaw_kernel_threads+0xb0/0xb0 kernel/irq/manage.c:1202\n ? irq_forced_thread_fn+0x80/0x80 kernel/irq/manage.c:1220\n kthread+0xea/0x110 kernel/kthread.c:376\n ? synchronize_irq+0x1a0/0x1a0 kernel/irq/manage.c:1287\n ? kthread_associate_blkcg+0x80/0x80 kernel/kthread.c:331\n ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295\n \u003c/TASK\u003e\n\nTo prevent crash, validate rpp_info.seq before using."
}
],
"id": "CVE-2026-43213",
"lastModified": "2026-06-17T10:49:09.940",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.6,
"impactScore": 5.9,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
}
]
},
"published": "2026-05-06T12:16:40.803",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/957eda596c7665f2966970fd1dcc35fe299b38e8"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/b342dd13aedccb0dd27365f6cc63a262f42394ce"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/ef7fa19809b2d892d45da53f90ac698d13c367fd"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-476"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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.
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- 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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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