CVE-2026-72030 (GCVE-0-2026-72030)
Vulnerability from cvelistv5
Published
2026-08-15 05:51
Modified
2026-08-23 12:46
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
ata: libata-core: Reject an invalid concurrent positioning ranges count
ata_dev_config_cpr() takes the number of range descriptors from buf[0]
of the concurrent positioning ranges log (up to 255), which the device
reports independently of the log size in the GPL directory. The count is
then walked at a fixed 32-byte stride in two places with no bound: the
log read here, and the INQUIRY VPD page B9h emitter, which writes one
descriptor per range into the fixed 2048-byte ata_scsi_rbuf. A device
reporting a count larger than its own log overflows the read buffer (up
to 7704 bytes past a 512-byte slab), and a count above 62 overflows the
response buffer on the emit side.
Bound the count once, on probe, against both the log the device returned
and the number of descriptors the VPD B9h response buffer can hold
(ATA_DEV_MAX_CPR, derived from the rbuf size). Reject an out-of-range
count with a warning; this keeps the emitter in bounds with no separate
change there.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: fe22e1c2f705676a705d821301fc52eecc2fe055 Version: fe22e1c2f705676a705d821301fc52eecc2fe055 Version: fe22e1c2f705676a705d821301fc52eecc2fe055 Version: fe22e1c2f705676a705d821301fc52eecc2fe055 Version: fe22e1c2f705676a705d821301fc52eecc2fe055 Version: fe22e1c2f705676a705d821301fc52eecc2fe055 |
||
{
"containers": {
"cna": {
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{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/ata/libata-core.c",
"drivers/ata/libata-scsi.c",
"drivers/ata/libata.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
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{
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"versionType": "git"
},
{
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"version": "fe22e1c2f705676a705d821301fc52eecc2fe055",
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{
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]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/ata/libata-core.c",
"drivers/ata/libata-scsi.c",
"drivers/ata/libata.h"
],
"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": "6.1.*",
"status": "unaffected",
"version": "6.1.184",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.148",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.42",
"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": "6.1.184",
"versionStartIncluding": "5.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.16",
"vulnerable": true
},
{
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{
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{
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},
{
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}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nata: libata-core: Reject an invalid concurrent positioning ranges count\n\nata_dev_config_cpr() takes the number of range descriptors from buf[0]\nof the concurrent positioning ranges log (up to 255), which the device\nreports independently of the log size in the GPL directory. The count is\nthen walked at a fixed 32-byte stride in two places with no bound: the\nlog read here, and the INQUIRY VPD page B9h emitter, which writes one\ndescriptor per range into the fixed 2048-byte ata_scsi_rbuf. A device\nreporting a count larger than its own log overflows the read buffer (up\nto 7704 bytes past a 512-byte slab), and a count above 62 overflows the\nresponse buffer on the emit side.\n\nBound the count once, on probe, against both the log the device returned\nand the number of descriptors the VPD B9h response buffer can hold\n(ATA_DEV_MAX_CPR, derived from the rbuf size). Reject an out-of-range\ncount with a warning; this keeps the emitter in bounds with no separate\nchange there."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-23T12:46:28.762Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/01d7d321e6046f87ba270aeeffdc5260209bd91e"
},
{
"url": "https://git.kernel.org/stable/c/4cb4b4dd8853c4ab3057efe238b2c34277772176"
},
{
"url": "https://git.kernel.org/stable/c/b1607f0ee5f5e53e0aa66f41794085b7cc98f5d1"
},
{
"url": "https://git.kernel.org/stable/c/4c1e8ccd8655ee8cf1bcb1b7dfee72c9fa941fd4"
},
{
"url": "https://git.kernel.org/stable/c/d43efd1b5d976203e6f1ef26f67e8b1a7bc2751b"
},
{
"url": "https://git.kernel.org/stable/c/533a0b940f901c15e5cbbd4b5d66e871c209e8ce"
}
],
"title": "ata: libata-core: Reject an invalid concurrent positioning ranges count",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-72030",
"datePublished": "2026-08-15T05:51:53.189Z",
"dateReserved": "2026-08-09T03:40:39.901Z",
"dateUpdated": "2026-08-23T12:46:28.762Z",
"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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