linux — security advisory
In the Linux kernel, the following vulnerability has been resolved: tpm: use try_get_ops() in tpm-space.c As part of the series conversion to remove nested TPM operations: https://lore.kernel.org/all/20190205224723.19671-1-jarkko.sakkinen@linux.intel.com/ exposure of the chip->tpm_mutex was removed from much of the upper level code. In this conversion, tpm2_del_space() was missed. This didn't matter much because it's usually called closely after a converted operation, so there's only a very tiny race window where the chip can be removed before the space flushing is done which causes a NULL deref on the mutex. However, there are reports of this window being hit in practice, so fix this by converting tpm2_del_space() to use tpm_try_get_ops(), which performs all the teardown checks before acquring the mutex.
- Products
- linux
- Affected versions
- Not specified
- Fixed versions
- 5.17.3-1
- CVEs
- CVE-2022-49286
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 15:06 UTC · Revision 1
Source evidence
In the Linux kernel, the following vulnerability has been resolved: tpm: use try_get_ops() in tpm-space.c As part of the series conversion to remove nested TPM operations: https://lore.kernel.org/all/20190205224723.19671-1-jarkko.sakkinen@linux.intel.com/ exposure of the chip->tpm_mutex was removed from much of the upper level code. In this conversion, tpm2_del_space() was missed. This didn't matter much because it's usually called closely after a converted operation, so there's only a very tiny race window where the chip can be removed before the space flushing is done which causes a NULL deref on the mutex. However, there are reports of this window being hit in practice, so fix this by converting tpm2_del_space() to use tpm_try_get_ops(), which performs all the teardown checks before acquring the mutex.
osv:DEBIAN-CVE-2022-49286
linux
Fixed versions: 5.17.3-1
linux
Fixed versions: 5.17.3-1
linux
Fixed versions: 5.17.3-1
Complete source record
{
"id": "84c1067c1a9de49644e1a2b452a6e9379d3ea9e4cdc013511962a78d6b97cdfd",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2022-49286",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2022-49286",
"summary": "In the Linux kernel, the following vulnerability has been resolved: tpm: use try_get_ops() in tpm-space.c As part of the series conversion to remove nested TPM operations: https://lore.kernel.org/all/20190205224723.19671-1-jarkko.sakkinen@linux.intel.com/ exposure of the chip->tpm_mutex was removed from much of the upper level code. In this conversion, tpm2_del_space() was missed. This didn't matter much because it's usually called closely after a converted operation, so there's only a very tiny race window where the chip can be removed before the space flushing is done which causes a NULL deref on the mutex. However, there are reports of this window being hit in practice, so fix this by converting tpm2_del_space() to use tpm_try_get_ops(), which performs all the teardown checks before acquring the mutex.",
"evidence": "osv:DEBIAN-CVE-2022-49286",
"products": [
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},
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"severity": "medium",
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"aliases": [
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"metrics": [
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{
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"package": {
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{
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"package": {
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"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49286.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-15T08:02:49.707004698Z",
"provider": "osv",
"upstream": [
"CVE-2022-49286"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2022-49286"
]
},
"related_cves": [
{
"value": "CVE-2022-49286",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 324348,
"published_at": "2025-02-26T07:01:05.453+00:00"
}