CVE-2026-43041 (GCVE-0-2026-43041)
Vulnerability from cvelistv5
Published
2026-05-01 14:15
Modified
2026-05-01 14:15
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: qrtr: replace qrtr_tx_flow radix_tree with xarray to fix memory leak
__radix_tree_create() allocates and links intermediate nodes into the
tree one by one. If a subsequent allocation fails, the already-linked
nodes remain in the tree with no corresponding leaf entry. These orphaned
internal nodes are never reclaimed because radix_tree_for_each_slot()
only visits slots containing leaf values.
The radix_tree API is deprecated in favor of xarray. As suggested by
Matthew Wilcox, migrate qrtr_tx_flow from radix_tree to xarray instead
of fixing the radix_tree itself [1]. xarray properly handles cleanup of
internal nodes — xa_destroy() frees all internal xarray nodes when the
qrtr_node is released, preventing the leak.
[1] https://lore.kernel.org/all/20260225071623.41275-1-jiayuan.chen@linux.dev/T/
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 5fdeb0d372ab33b4175043a2a4a1730239a217f1 Version: 5fdeb0d372ab33b4175043a2a4a1730239a217f1 Version: 5fdeb0d372ab33b4175043a2a4a1730239a217f1 Version: 5fdeb0d372ab33b4175043a2a4a1730239a217f1 Version: 5fdeb0d372ab33b4175043a2a4a1730239a217f1 Version: 5fdeb0d372ab33b4175043a2a4a1730239a217f1 Version: 5fdeb0d372ab33b4175043a2a4a1730239a217f1 Version: 5fdeb0d372ab33b4175043a2a4a1730239a217f1 |
||
{
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: replace qrtr_tx_flow radix_tree with xarray to fix memory leak\n\n__radix_tree_create() allocates and links intermediate nodes into the\ntree one by one. If a subsequent allocation fails, the already-linked\nnodes remain in the tree with no corresponding leaf entry. These orphaned\ninternal nodes are never reclaimed because radix_tree_for_each_slot()\nonly visits slots containing leaf values.\n\nThe radix_tree API is deprecated in favor of xarray. As suggested by\nMatthew Wilcox, migrate qrtr_tx_flow from radix_tree to xarray instead\nof fixing the radix_tree itself [1]. xarray properly handles cleanup of\ninternal nodes \u2014 xa_destroy() frees all internal xarray nodes when the\nqrtr_node is released, preventing the leak.\n\n[1] https://lore.kernel.org/all/20260225071623.41275-1-jiayuan.chen@linux.dev/T/"
}
],
"providerMetadata": {
"dateUpdated": "2026-05-01T14:15:38.112Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"url": "https://git.kernel.org/stable/c/4b75ff0aedd6ade1018ad4a3a9d8336794e36e42"
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{
"url": "https://git.kernel.org/stable/c/0fda873092b541bb5a9b87d728a2429f863f8cfa"
},
{
"url": "https://git.kernel.org/stable/c/69402908e277dd164bf8d7c8fd0513c0fac28e9e"
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{
"url": "https://git.kernel.org/stable/c/f2664bc4f0f356f17c2094587a2b3665e3867e44"
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"url": "https://git.kernel.org/stable/c/5d2249eefaca59908fe3c264b8eca526424dcfbe"
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{
"url": "https://git.kernel.org/stable/c/2428083101f6883f979cceffa76cd8440751ffe6"
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"title": "net: qrtr: replace qrtr_tx_flow radix_tree with xarray to fix memory leak",
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"cveId": "CVE-2026-43041",
"datePublished": "2026-05-01T14:15:38.112Z",
"dateReserved": "2026-05-01T14:12:55.978Z",
"dateUpdated": "2026-05-01T14:15:38.112Z",
"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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