UnratedFix available
mailbox: mailbox-test: don't free the reused channel
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: mailbox: mailbox-test: don't free the reused channel The RX channel can be aliased to the TX channel if it has a different MMIO. This special case needs to be handled when freeing the channels otherwise a double-free occurs.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.258, 5.15.209, 6.1.175, 6.12.91, 6.18.33, 6.6.141, 7.0.10
- CVEs
- CVE-2026-53294
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 5 Nov 2026, 02:01 UTC · Revision 1
Source evidence
mailbox: mailbox-test: don't free the reused channel
core-osv · Original sourcePublished 26 Jun 2026, 19:40 UTC
In the Linux kernel, the following vulnerability has been resolved: mailbox: mailbox-test: don't free the reused channel The RX channel can be aliased to the TX channel if it has a different MMIO. This special case needs to be handled when freeing the channels otherwise a double-free occurs.
osv:CVE-2026-53294
Kernel
Fixed versions: 5.10.258, 5.15.209, 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10
Complete source record
{
"id": "d2f50665801f647f003a17709f61a16499e51bc3adf0e4b42934b0b395ac58e1",
"url": "https://osv.dev/vulnerability/CVE-2026-53294",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "mailbox: mailbox-test: don't free the reused channel",
"summary": "In the Linux kernel, the following vulnerability has been resolved: mailbox: mailbox-test: don't free the reused channel The RX channel can be aliased to the TX channel if it has a different MMIO. This special case needs to be handled when freeing the channels otherwise a double-free occurs.",
"evidence": "osv:CVE-2026-53294",
"products": [
{
"name": {
"value": "Kernel",
"evidence": "/affected/1/package/name"
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"prerequisites": [],
"fixed_versions": [
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"value": "5.10.258",
"evidence": "/affected/1/ranges"
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{
"value": "5.15.209",
"evidence": "/affected/1/ranges"
},
{
"value": "6.1.175",
"evidence": "/affected/1/ranges"
},
{
"value": "6.6.141",
"evidence": "/affected/1/ranges"
},
{
"value": "6.12.91",
"evidence": "/affected/1/ranges"
},
{
"value": "6.18.33",
"evidence": "/affected/1/ranges"
},
{
"value": "7.0.10",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CVE-2026-53294",
"aliases": [
"CVE-2026-53294"
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"affected": [
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{
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"database_specific": {
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}
},
{
"ranges": [
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"type": "ECOSYSTEM",
"events": [
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{
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{
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{
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{
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{
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{
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{
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},
{
"type": "ECOSYSTEM",
"events": [
{
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{
"fixed": "7.0.10"
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],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53294.json"
}
}
],
"modified": "2026-10-28T02:30:41.890955749Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/240c71a2aea36a1a4210f911a1c32ea88777e8e4",
"https://git.kernel.org/stable/c/3afca89fae501dbd7421e1777b5b8f033b1d98d0",
"https://git.kernel.org/stable/c/5c209299b0113e289e238fa5f2e8f00c59f76060",
"https://git.kernel.org/stable/c/5d4f3d0f64f1016cb78b400a70b67df91fac99b5",
"https://git.kernel.org/stable/c/82f6dcea46cf5de65c4ba7283f7c7b34de4a324d",
"https://git.kernel.org/stable/c/88ebadbf0deefdaccdab868b44ff70a0a257f473",
"https://git.kernel.org/stable/c/c494a11da45ad7ec9b0ff216c3e3ace351193bb6",
"https://git.kernel.org/stable/c/fc0089f82c3e36060c2c79156bc2018bfb16b56b",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53294.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-53294",
"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/2026/53xxx/CVE-2026-53294.json"
}
},
"related_cves": [
{
"value": "CVE-2026-53294",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 509307,
"published_at": "2026-06-26T19:40:52.927+00:00"
}