CVE-2026-74459 (GCVE-0-2026-74459)
Vulnerability from cvelistv5
Published
2026-08-15 12:27
Modified
2026-08-19 16:36
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure
es58x_read_bulk_callback() resubmits the RX URB after processing a received
packet. If the resubmit succeeds, the URB remains anchored and will be
handled by the normal RX path or by teardown.
However, if usb_submit_urb() fails, the callback unanchors the URB and then
returns directly. This skips the existing free_urb path, so the coherent
transfer buffer allocated with usb_alloc_coherent() is not released.
Reuse the existing free_urb path after a resubmit failure so that the RX
coherent buffer is freed before leaving the callback.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 7a0171b4921ad443fee5ed4fcb9d99fa4776edac Version: 2185ea6e4ebcb61d1224dc7d187c59723cb5ad59 Version: f6e90c113c92e83fc0963d5e60e16b0e8a268981 Version: b878444519fa03a3edd287d1963cf79ef78be2f1 Version: 18eee279e9b5bff0db1aca9475ae4bc12804f05c Version: 5eaad4f768266f1f17e01232ffe2ef009f8129b7 Version: 5eaad4f768266f1f17e01232ffe2ef009f8129b7 Version: b8f9ca88253574638bcff38900a4c28d570b1919 Version: 5.15.203 ≤ Version: 6.1.167 ≤ Version: 6.6.130 ≤ Version: 6.12.77 ≤ Version: 6.18.17 ≤ Version: 6.19.7 ≤ |
||
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},
{
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"product": "Linux",
"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
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{
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"version": "7.0"
},
{
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{
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},
{
"lessThanOrEqual": "*",
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}
],
"cpeApplicability": [
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure\n\nes58x_read_bulk_callback() resubmits the RX URB after processing a received\npacket. If the resubmit succeeds, the URB remains anchored and will be\nhandled by the normal RX path or by teardown.\n\nHowever, if usb_submit_urb() fails, the callback unanchors the URB and then\nreturns directly. This skips the existing free_urb path, so the coherent\ntransfer buffer allocated with usb_alloc_coherent() is not released.\n\nReuse the existing free_urb path after a resubmit failure so that the RX\ncoherent buffer is freed before leaving the callback."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-19T16:36:55.813Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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"references": [
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"url": "https://git.kernel.org/stable/c/c7ddf119544eea2d8409e12471c3f9f36ca02e3f"
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{
"url": "https://git.kernel.org/stable/c/21da1a374769751546cc131e58a4d8bd968f57b2"
},
{
"url": "https://git.kernel.org/stable/c/0ef136ba052101243ba117a1aca6f4a4c3a81142"
},
{
"url": "https://git.kernel.org/stable/c/b85e5c310382803d27adf6fe6554d4208bc8951c"
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{
"url": "https://git.kernel.org/stable/c/c311f17c261fd375ddf5755f2ebe1f022c19c5b0"
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{
"url": "https://git.kernel.org/stable/c/19c6c8c6cd5dd14fab5fcd744584812a57cbb78d"
},
{
"url": "https://git.kernel.org/stable/c/7a0cf2b2497c757c3cb1286eddf2986abb0d387b"
}
],
"title": "can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure",
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"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2026-74459",
"datePublished": "2026-08-15T12:27:00.653Z",
"dateReserved": "2026-08-15T05:44:03.900Z",
"dateUpdated": "2026-08-19T16:36:55.813Z",
"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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