HighFix available
scsi: target: tcmu: Fix possible page UAF
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: scsi: target: tcmu: Fix possible page UAF tcmu_try_get_data_page() looks up pages under cmdr_lock, but it does not take refcount properly and just returns page pointer. When tcmu_try_get_data_page() returns, the returned page may have been freed by tcmu_blocks_release(). We need to get_page() under cmdr_lock to avoid concurrent tcmu_blocks_release().
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 4.14.276, 4.19.239, 5.10.112, 5.15.35, 5.17.4, 5.4.190
- CVEs
- CVE-2022-49053
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 03:32 UTC · Revision 1
Source evidence
In the Linux kernel, the following vulnerability has been resolved: scsi: target: tcmu: Fix possible page UAF tcmu_try_get_data_page() looks up pages under cmdr_lock, but it does not take refcount properly and just returns page pointer. When tcmu_try_get_data_page() returns, the returned page may have been freed by tcmu_blocks_release(). We need to get_page() under cmdr_lock to avoid concurrent tcmu_blocks_release().
osv:CVE-2022-49053
Kernel
Fixed versions: 4.14.276, 4.19.239, 5.4.190, 5.10.112, 5.15.35, 5.17.4
Complete source record
{
"id": "ff969d07c91bf1923e9d05d4e58eb2d52ea9f677ce97eb7eff7c2412753f9ee9",
"url": "https://osv.dev/vulnerability/CVE-2022-49053",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "scsi: target: tcmu: Fix possible page UAF",
"summary": "In the Linux kernel, the following vulnerability has been resolved: scsi: target: tcmu: Fix possible page UAF tcmu_try_get_data_page() looks up pages under cmdr_lock, but it does not take refcount properly and just returns page pointer. When tcmu_try_get_data_page() returns, the returned page may have been freed by tcmu_blocks_release(). We need to get_page() under cmdr_lock to avoid concurrent tcmu_blocks_release().",
"evidence": "osv:CVE-2022-49053",
"products": [
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"name": {
"value": "Kernel",
"evidence": "/affected/1/package/name"
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"prerequisites": [],
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"evidence": "/affected/1/ranges"
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{
"value": "4.19.239",
"evidence": "/affected/1/ranges"
},
{
"value": "5.4.190",
"evidence": "/affected/1/ranges"
},
{
"value": "5.10.112",
"evidence": "/affected/1/ranges"
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{
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"evidence": "/affected/1/ranges"
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{
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"affected_versions": []
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"severity": "high",
"structured": {
"id": "CVE-2022-49053",
"aliases": [
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"metrics": [
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"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
}
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"affected": [
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"package": {
"name": "Kernel",
"ecosystem": "Linux"
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"database_specific": {
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],
"modified": "2026-10-28T02:30:49.414765569Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/a6968f7a367f128d120447360734344d5a3d5336",
"https://git.kernel.org/stable/c/a9564d84ed9f6ee71017d062d0d2182154294a4b",
"https://git.kernel.org/stable/c/aec36b98a1bbaa84bfd8299a306e4c12314af626",
"https://git.kernel.org/stable/c/b7f3b5d70c834f49f7d87a2f2ed1c6284d9a0322",
"https://git.kernel.org/stable/c/d7c5d79e50be6e06b669141e3db1f977a0dd4e8e",
"https://git.kernel.org/stable/c/e3e0e067d5b34e4a68e3cc55f8eebc413f56f8ed",
"https://git.kernel.org/stable/c/fb7a5115422fbd6a4d505e8844f1ef5529f10489",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49053.json",
"https://nvd.nist.gov/vuln/detail/CVE-2022-49053",
"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-2022-49053.json"
}
},
"related_cves": [
{
"value": "CVE-2022-49053",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 517778,
"published_at": "2025-02-26T01:54:26.806+00:00"
}