UnratedFix available
gsmi: fix null-deref in gsmi_get_variable
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: gsmi: fix null-deref in gsmi_get_variable We can get EFI variables without fetching the attribute, so we must allow for that in gsmi. commit 859748255b43 ("efi: pstore: Omit efivars caching EFI varstore access layer") added a new get_variable call with attr=NULL, which triggers panic in gsmi.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 4.14.304, 4.19.271, 5.10.165, 5.15.90, 5.4.230, 6.1.8
- CVEs
- CVE-2023-52893
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 5 Nov 2026, 01:00 UTC · Revision 1
Source evidence
In the Linux kernel, the following vulnerability has been resolved: gsmi: fix null-deref in gsmi_get_variable We can get EFI variables without fetching the attribute, so we must allow for that in gsmi. commit 859748255b43 ("efi: pstore: Omit efivars caching EFI varstore access layer") added a new get_variable call with attr=NULL, which triggers panic in gsmi.
osv:CVE-2023-52893
Kernel
Fixed versions: 4.14.304, 4.19.271, 5.4.230, 5.10.165, 5.15.90, 6.1.8
Complete source record
{
"id": "3b705b780621a930f038763574d45877635859a752b51e39bb789050d953ab12",
"url": "https://osv.dev/vulnerability/CVE-2023-52893",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "gsmi: fix null-deref in gsmi_get_variable",
"summary": "In the Linux kernel, the following vulnerability has been resolved: gsmi: fix null-deref in gsmi_get_variable We can get EFI variables without fetching the attribute, so we must allow for that in gsmi. commit 859748255b43 (\"efi: pstore: Omit efivars caching EFI varstore access layer\") added a new get_variable call with attr=NULL, which triggers panic in gsmi.",
"evidence": "osv:CVE-2023-52893",
"products": [
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"name": {
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"prerequisites": [],
"fixed_versions": [
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"value": "4.14.304",
"evidence": "/affected/1/ranges"
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{
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"evidence": "/affected/1/ranges"
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{
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"severity": "unknown",
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"aliases": [
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"package": {
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"database_specific": {
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],
"modified": "2026-10-28T02:30:41.203048211Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/32313c11bdc8a02c577abaf865be3664ab30410a",
"https://git.kernel.org/stable/c/6646d769fdb0ce4318ef9afd127f8526d1ca8393",
"https://git.kernel.org/stable/c/a769b05eeed7accc4019a1ed9799dd72067f1ce8",
"https://git.kernel.org/stable/c/ae2a9dcc8caa60b1e14671294e5ec902ea5d1dfd",
"https://git.kernel.org/stable/c/eb0421d90f916dffe96b4c049ddf01c0c50620d2",
"https://git.kernel.org/stable/c/ee5763ef829bd923033510de6d1df7c73f085e4b",
"https://git.kernel.org/stable/c/ffef77794fb5f1245c3249b86342bad2299accb5",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52893.json",
"https://nvd.nist.gov/vuln/detail/CVE-2023-52893",
"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/2023/52xxx/CVE-2023-52893.json"
}
},
"related_cves": [
{
"value": "CVE-2023-52893",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 508857,
"published_at": "2024-08-21T06:10:33.043+00:00"
}