linux — security advisory
In the Linux kernel, the following vulnerability has been resolved: qlcnic: prevent ->dcb use-after-free on qlcnic_dcb_enable() failure adapter->dcb would get silently freed inside qlcnic_dcb_enable() in case qlcnic_dcb_attach() would return an error, which always happens under OOM conditions. This would lead to use-after-free because both of the existing callers invoke qlcnic_dcb_get_info() on the obtained pointer, which is potentially freed at that point. Propagate errors from qlcnic_dcb_enable(), and instead free the dcb pointer at callsite using qlcnic_dcb_free(). This also removes the now unused qlcnic_clear_dcb_ops() helper, which was a simple wrapper around kfree() also causing memory leaks for partially initialized dcb. Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool.
- Products
- linux
- Affected versions
- Not specified
- Fixed versions
- 6.1.7-1
- CVEs
- CVE-2022-50288
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 15:27 UTC · Revision 1
Source evidence
In the Linux kernel, the following vulnerability has been resolved: qlcnic: prevent ->dcb use-after-free on qlcnic_dcb_enable() failure adapter->dcb would get silently freed inside qlcnic_dcb_enable() in case qlcnic_dcb_attach() would return an error, which always happens under OOM conditions. This would lead to use-after-free because both of the existing callers invoke qlcnic_dcb_get_info() on the obtained pointer, which is potentially freed at that point. Propagate errors from qlcnic_dcb_enable(), and instead free the dcb pointer at callsite using qlcnic_dcb_free(). This also removes the now unused qlcnic_clear_dcb_ops() helper, which was a simple wrapper around kfree() also causing memory leaks for partially initialized dcb. Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool.
osv:DEBIAN-CVE-2022-50288
linux
Fixed versions: 6.1.7-1
linux
Fixed versions: 6.1.7-1
linux
Fixed versions: 6.1.7-1
Complete source record
{
"id": "dc80c77d9782658abacca5b2399ac327c4cb3e7cc48c0206e607db751c06e4f7",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2022-50288",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2022-50288",
"summary": "In the Linux kernel, the following vulnerability has been resolved: qlcnic: prevent ->dcb use-after-free on qlcnic_dcb_enable() failure adapter->dcb would get silently freed inside qlcnic_dcb_enable() in case qlcnic_dcb_attach() would return an error, which always happens under OOM conditions. This would lead to use-after-free because both of the existing callers invoke qlcnic_dcb_get_info() on the obtained pointer, which is potentially freed at that point. Propagate errors from qlcnic_dcb_enable(), and instead free the dcb pointer at callsite using qlcnic_dcb_free(). This also removes the now unused qlcnic_clear_dcb_ops() helper, which was a simple wrapper around kfree() also causing memory leaks for partially initialized dcb. Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool.",
"evidence": "osv:DEBIAN-CVE-2022-50288",
"products": [
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},
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"severity": "medium",
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"metrics": [
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}
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"affected": [
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"database_specific": {
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},
"ecosystem_specific": {
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}
],
"modified": "2026-10-15T08:03:00.417871110Z",
"provider": "osv",
"upstream": [
"CVE-2022-50288"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2022-50288"
]
},
"related_cves": [
{
"value": "CVE-2022-50288",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 324917,
"published_at": "2025-09-15T15:15:40.02+00:00"
}