CVE-2026-72005 (GCVE-0-2026-72005)
Vulnerability from cvelistv5
Published
2026-08-15 05:51
Modified
2026-08-17 05:39
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
wifi: rt2x00: avoid full teardown before work setup in probe
rt2x00lib_probe_dev() uses the full rt2x00lib_remove_dev() teardown for
all probe failures. However, drv_data allocation and workqueue allocation
can fail before intf_work, autowakeup_work and sleep_work have been
initialized.
Do not enter the full remove path until the probe has reached the point
where those work items are set up. Return directly for drv_data allocation
failure, and use a small early cleanup path for workqueue allocation
failure.
This issue was found by our static analysis tool and then confirmed by
manual review of rt2x00lib_probe_dev() and rt2x00lib_remove_dev(). The
early probe exits should not call a common teardown path that assumes the
later work setup has already completed.
A QEMU PoC forced alloc_ordered_workqueue() to fail before the work
initializers are reached. The resulting fail path entered
rt2x00lib_remove_dev(), and DEBUG_OBJECTS reported invalid work drains with
rt2x00lib_probe_dev() and rt2x00lib_remove_dev() in the stack.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2 Version: 0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2 Version: 0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2 Version: 0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2 Version: 0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2 Version: 0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2 Version: 0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2 Version: 0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2 |
||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/wireless/ralink/rt2x00/rt2x00dev.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "8b58d1f1356df6a7d2de3f55bb665b18b04ffda0",
"status": "affected",
"version": "0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2",
"versionType": "git"
},
{
"lessThan": "59afe6148927395cf86f9429900e029a48b1d42b",
"status": "affected",
"version": "0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2",
"versionType": "git"
},
{
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"status": "affected",
"version": "0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2",
"versionType": "git"
},
{
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"status": "affected",
"version": "0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2",
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{
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"status": "affected",
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"versionType": "git"
},
{
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"status": "affected",
"version": "0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2",
"versionType": "git"
},
{
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"status": "affected",
"version": "0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2",
"versionType": "git"
},
{
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"status": "affected",
"version": "0439f5367c8d8bb2ebaca8d7329f51f3148b2fb2",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/net/wireless/ralink/rt2x00/rt2x00dev.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.39"
},
{
"lessThan": "2.6.39",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.261",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.212",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.97",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.40",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.261",
"versionStartIncluding": "2.6.39",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.212",
"versionStartIncluding": "2.6.39",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.178",
"versionStartIncluding": "2.6.39",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.145",
"versionStartIncluding": "2.6.39",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.97",
"versionStartIncluding": "2.6.39",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.40",
"versionStartIncluding": "2.6.39",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.1.5",
"versionStartIncluding": "2.6.39",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2",
"versionStartIncluding": "2.6.39",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rt2x00: avoid full teardown before work setup in probe\n\nrt2x00lib_probe_dev() uses the full rt2x00lib_remove_dev() teardown for\nall probe failures. However, drv_data allocation and workqueue allocation\ncan fail before intf_work, autowakeup_work and sleep_work have been\ninitialized.\n\nDo not enter the full remove path until the probe has reached the point\nwhere those work items are set up. Return directly for drv_data allocation\nfailure, and use a small early cleanup path for workqueue allocation\nfailure.\n\nThis issue was found by our static analysis tool and then confirmed by\nmanual review of rt2x00lib_probe_dev() and rt2x00lib_remove_dev(). The\nearly probe exits should not call a common teardown path that assumes the\nlater work setup has already completed.\n\nA QEMU PoC forced alloc_ordered_workqueue() to fail before the work\ninitializers are reached. The resulting fail path entered\nrt2x00lib_remove_dev(), and DEBUG_OBJECTS reported invalid work drains with\nrt2x00lib_probe_dev() and rt2x00lib_remove_dev() in the stack."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The flaw is in rt2x00 driver probe (rt2x00usb_probe/rt2x00pci_probe/rt2800soc_probe), triggered during device initialization on boot or hotplug, not by remote WiFi frames; worst case is built-in SoC/PCI WiFi on internet-facing routers/APs under local memory pressure.\nAC:L - An attacker can reliably force kzalloc or alloc_ordered_workqueue() to fail with a memory exhaustion attack and retry on reboot or USB reinsertion; success does not depend on uncontrollable layout or victim-only timing beyond attacker-driven ENOMEM.\nPR:L - Triggering probe-time ENOMEM requires only an unprivileged local process to exhaust memory during driver initialization; no CAP_NET_ADMIN, real root, or user-namespace capability is needed to reach the vulnerable teardown path.\nUI:N - Exploitation does not require a victim to click, mount, or configure anything; probe runs automatically at boot or on device hotplug while the attacker maintains memory pressure.\nS:U - Impact is confined to kernel/driver state on the host being probed; it is not a VM escape, sandbox breakout, or cross-authority boundary crossing beyond standard local kernel compromise.\nC:H - rt2x00lib_remove_dev() calls cancel_work_sync/cancel_delayed_work_sync and hrtimer_cancel on objects never initialized by INIT_WORK/hrtimer_setup, corrupting workqueue/timer metadata and creating undefined behavior that can expose kernel memory.\nI:H - Invalid cancel/flush/drain of uninitialized work items and tasklet_kill on uninitialized tasklets can corrupt adjacent kernel heap objects and workqueue state, plausibly yielding write primitives beyond a simple denial of service.\nA:H - A QEMU PoC forcing alloc_ordered_workqueue() failure hit DEBUG_OBJECTS invalid work drains in rt2x00lib_remove_dev(); this teardown path can WARN/OOPS/panic the kernel during probe failure cleanup."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T05:39:22.758Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/8b58d1f1356df6a7d2de3f55bb665b18b04ffda0"
},
{
"url": "https://git.kernel.org/stable/c/59afe6148927395cf86f9429900e029a48b1d42b"
},
{
"url": "https://git.kernel.org/stable/c/3c0427d719bddb33caf18ff4ffb77cb47de7eb00"
},
{
"url": "https://git.kernel.org/stable/c/eb7474d0253bb2de4793e1d3ce833e8564bbe732"
},
{
"url": "https://git.kernel.org/stable/c/66bd9b1a72de7c2f5141b02d796048aafaed8a49"
},
{
"url": "https://git.kernel.org/stable/c/816559409e340acaa5c9d868291dab30d8c80263"
},
{
"url": "https://git.kernel.org/stable/c/56994852d704535ea354a4627ca667b1b4fa0deb"
},
{
"url": "https://git.kernel.org/stable/c/536fb3d739d75a03cb318c0c6fe799425cfea501"
}
],
"title": "wifi: rt2x00: avoid full teardown before work setup in probe",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-72005",
"datePublished": "2026-08-15T05:51:36.005Z",
"dateReserved": "2026-08-09T03:40:39.898Z",
"dateUpdated": "2026-08-17T05:39:22.758Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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