UnratedFix available
mxser: fix xmit_buf leak in activate when LSR == 0xff
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: mxser: fix xmit_buf leak in activate when LSR == 0xff When LSR is 0xff in ->activate() (rather unlike), we return an error. Provided ->shutdown() is not called when ->activate() fails, nothing actually frees the buffer in this case. Fix this by properly freeing the buffer in a designated label. We jump there also from the "!info->type" if now too.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 4.14.276, 4.19.238, 4.9.311, 5.10.110, 5.15.33, 5.16.19, 5.17.2, 5.4.189
- CVEs
- CVE-2022-49191
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 15:22 UTC · Revision 1
Source evidence
mxser: fix xmit_buf leak in activate when LSR == 0xff
core-osv · Original sourcePublished 26 Feb 2025, 01:55 UTC
In the Linux kernel, the following vulnerability has been resolved: mxser: fix xmit_buf leak in activate when LSR == 0xff When LSR is 0xff in ->activate() (rather unlike), we return an error. Provided ->shutdown() is not called when ->activate() fails, nothing actually frees the buffer in this case. Fix this by properly freeing the buffer in a designated label. We jump there also from the "!info->type" if now too.
osv:CVE-2022-49191
Kernel
Fixed versions: 4.9.311, 4.14.276, 4.19.238, 5.4.189, 5.10.110, 5.15.33, 5.16.19, 5.17.2
Complete source record
{
"id": "09247d32e0fe7f6ef7186d9bf752226842a801b604de2a601bf3cdead1cb67fc",
"url": "https://osv.dev/vulnerability/CVE-2022-49191",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "mxser: fix xmit_buf leak in activate when LSR == 0xff",
"summary": "In the Linux kernel, the following vulnerability has been resolved: mxser: fix xmit_buf leak in activate when LSR == 0xff When LSR is 0xff in ->activate() (rather unlike), we return an error. Provided ->shutdown() is not called when ->activate() fails, nothing actually frees the buffer in this case. Fix this by properly freeing the buffer in a designated label. We jump there also from the \"!info->type\" if now too.",
"evidence": "osv:CVE-2022-49191",
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"aliases": [
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{
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"events": [
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},
{
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],
"modified": "2026-10-28T02:30:37.006339568Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/125b7c929fc9b1e5eaa344bceb6367dfa6fd3f9d",
"https://git.kernel.org/stable/c/2cd05c38a27bee7fb42aa4d43174d68ac55dac0f",
"https://git.kernel.org/stable/c/376922045009f8ea2d20a8fa3475e95b47c41690",
"https://git.kernel.org/stable/c/685b6d16bf89595310b5d61394c9b97cc9505c7c",
"https://git.kernel.org/stable/c/6c9041b2f90c0eace73106f22350e1d2c98f5edc",
"https://git.kernel.org/stable/c/6dffc2035fbaada60ca8db59e0962e34f760370a",
"https://git.kernel.org/stable/c/996291d06851a26678a0fab488b6e1f0677c0576",
"https://git.kernel.org/stable/c/b125b08dbee3611f03f53b71471813ed4ccafcdd",
"https://git.kernel.org/stable/c/cd3a4907ee334b40d7aa880c7ab310b154fd5cd4",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49191.json",
"https://nvd.nist.gov/vuln/detail/CVE-2022-49191",
"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/2022/49xxx/CVE-2022-49191.json"
}
},
"related_cves": [
{
"value": "CVE-2022-49191",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 504066,
"published_at": "2025-02-26T01:55:38.124+00:00"
}