UnratedFix available
net: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean()
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: net: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean() The priv->rx_buffer and priv->tx_buffer are alloc'd together as contiguous buffers in uhdlc_init() but freed as two buffers in uhdlc_memclean(). Change the cleanup to only call dma_free_coherent() once on the whole buffer.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.252, 5.15.202, 6.1.165, 6.12.75, 6.18.16, 6.19.6, 6.6.128
- CVEs
- CVE-2026-43149
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 08:10 UTC · Revision 1
Source evidence
net: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean()
core-osv · Original sourcePublished 6 May 2026, 11:27 UTC
In the Linux kernel, the following vulnerability has been resolved: net: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean() The priv->rx_buffer and priv->tx_buffer are alloc'd together as contiguous buffers in uhdlc_init() but freed as two buffers in uhdlc_memclean(). Change the cleanup to only call dma_free_coherent() once on the whole buffer.
osv:CVE-2026-43149
Kernel
Fixed versions: 5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.16, 6.19.6
Complete source record
{
"id": "f51d82df86fde03106e6b1041e656186f40fab07244d9828af1919834678ff78",
"url": "https://osv.dev/vulnerability/CVE-2026-43149",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "net: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean()",
"summary": "In the Linux kernel, the following vulnerability has been resolved: net: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean() The priv->rx_buffer and priv->tx_buffer are alloc'd together as contiguous buffers in uhdlc_init() but freed as two buffers in uhdlc_memclean(). Change the cleanup to only call dma_free_coherent() once on the whole buffer.",
"evidence": "osv:CVE-2026-43149",
"products": [
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"evidence": "/affected/1/package/name"
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{
"value": "6.6.128",
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{
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{
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"affected_versions": []
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"severity": "unknown",
"structured": {
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"aliases": [
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{
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"events": [
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"introduced": "6.13.0"
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{
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"events": [
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{
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"package": {
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"ecosystem": "Linux"
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"database_specific": {
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],
"modified": "2026-10-28T02:30:27.299474762Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/011ae5dd84dc9f05eb9b8e1adff44252ac776e7b",
"https://git.kernel.org/stable/c/0f85a9655445e67bb0238cfc983d7c383b54938e",
"https://git.kernel.org/stable/c/36bd7d5deef936c4e1e3cd341598140e5c14c1d3",
"https://git.kernel.org/stable/c/6496fb830cbb741d831225cc4e7e5601c6e42970",
"https://git.kernel.org/stable/c/84b932bc9899d43e5829e6cf088b72d73a922b2b",
"https://git.kernel.org/stable/c/ba8d8429e5d6c36f9a654d2b96b9e043c43d92b4",
"https://git.kernel.org/stable/c/d68994e37ac3b285692559776e0279a88a3b5f8d",
"https://git.kernel.org/stable/c/d8a522085d09b30aba1016daf1dddac37c0f0285",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43149.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-43149",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43149.json"
}
},
"related_cves": [
{
"value": "CVE-2026-43149",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 493671,
"published_at": "2026-05-06T11:27:31.708+00:00"
}