CVE-2026-98144 (GCVE-0-2026-98144)
Vulnerability from cvelistv5
Published
2026-09-25 10:36
Modified
2026-10-19 09:14
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
accel/amdxdna: put the chained BO when its mapping fails
amdxdna_cmd_set_error() looks up the first BO of a command chain, which
takes a reference, and drops it at the end of the function. The mapping of
that BO is established in between, and the failure path returns without the
put, so the reference is leaked.
Ordinary use does not reach it. The chain has been submitted before any of
this runs, so aie2_cmdlist_fill_slot() has already called
amdxdna_cmd_get_op() on that BO and amdxdna_gem_vmap() has cached its
address. What makes it reachable is that the BO is resolved again by
handle here, and the handle is userspace's to recycle: closing it after
submission and importing a dma-buf whose exporter implements no vmap onto
the same id leaves amdxdna_gem_get_obj() returning an object this cannot
map, since prime_import() types every import AMDXDNA_BO_SHARE.
References
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/accel/amdxdna/amdxdna_ctx.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "eb90cb257e0792ac11f0347254bad3fc72417db6",
"status": "affected",
"version": "d76856beb4a4a6c42244054cd780c00f2d33de4e",
"versionType": "git"
},
{
"lessThan": "7e33ba3a1d48c2d20ed270dec9d2d08332585c8e",
"status": "affected",
"version": "d76856beb4a4a6c42244054cd780c00f2d33de4e",
"versionType": "git"
},
{
"status": "affected",
"version": "33819cca7b76d5c2385c054f054c4b672ab989d5",
"versionType": "git"
},
{
"lessThan": "6.19",
"status": "affected",
"version": "6.18.57",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/accel/amdxdna/amdxdna_ctx.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "7.1"
},
{
"lessThan": "7.1",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.7",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2.7",
"versionStartIncluding": "7.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.3",
"versionStartIncluding": "7.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.18.57",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/amdxdna: put the chained BO when its mapping fails\n\namdxdna_cmd_set_error() looks up the first BO of a command chain, which\ntakes a reference, and drops it at the end of the function. The mapping of\nthat BO is established in between, and the failure path returns without the\nput, so the reference is leaked.\n\nOrdinary use does not reach it. The chain has been submitted before any of\nthis runs, so aie2_cmdlist_fill_slot() has already called\namdxdna_cmd_get_op() on that BO and amdxdna_gem_vmap() has cached its\naddress. What makes it reachable is that the BO is resolved again by\nhandle here, and the handle is userspace\u0027s to recycle: closing it after\nsubmission and importing a dma-buf whose exporter implements no vmap onto\nthe same id leaves amdxdna_gem_get_obj() returning an object this cannot\nmap, since prime_import() types every import AMDXDNA_BO_SHARE."
}
],
"providerMetadata": {
"dateUpdated": "2026-10-19T09:14:37.650Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/eb90cb257e0792ac11f0347254bad3fc72417db6"
},
{
"url": "https://git.kernel.org/stable/c/7e33ba3a1d48c2d20ed270dec9d2d08332585c8e"
}
],
"title": "accel/amdxdna: put the chained BO when its mapping fails",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-98144",
"datePublished": "2026-09-25T10:36:19.093Z",
"dateReserved": "2026-09-25T10:25:14.319Z",
"dateUpdated": "2026-10-19T09:14:37.650Z",
"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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