tracing: Fix overflow in get_free_elt()
In the Linux kernel, the following vulnerability has been resolved: tracing: Fix overflow in get_free_elt() "tracing_map->next_elt" in get_free_elt() is at risk of overflowing. Once it overflows, new elements can still be inserted into the tracing_map even though the maximum number of elements (`max_elts`) has been reached. Continuing to insert elements after the overflow could result in the tracing_map containing "tracing_map->max_size" elements, leaving no empty entries. If any attempt is made to insert an element into a full tracing_map using `__tracing_map_insert()`, it will cause an infinite loop with preemption disabled, leading to a CPU hang problem. Fix this by preventing any further increments to "tracing_map->next_elt" once it reaches "tracing_map->max_elt".
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 4.19.320, 5.10.224, 5.15.165, 5.4.282, 6.1.105, 6.10.5, 6.6.46
- CVEs
- CVE-2024-43890
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 23:11 UTC · Revision 1
Source evidence
In the Linux kernel, the following vulnerability has been resolved: tracing: Fix overflow in get_free_elt() "tracing_map->next_elt" in get_free_elt() is at risk of overflowing. Once it overflows, new elements can still be inserted into the tracing_map even though the maximum number of elements (`max_elts`) has been reached. Continuing to insert elements after the overflow could result in the tracing_map containing "tracing_map->max_size" elements, leaving no empty entries. If any attempt is made to insert an element into a full tracing_map using `__tracing_map_insert()`, it will cause an infinite loop with preemption disabled, leading to a CPU hang problem. Fix this by preventing any further increments to "tracing_map->next_elt" once it reaches "tracing_map->max_elt".
osv:CVE-2024-43890
Kernel
Fixed versions: 4.19.320, 5.4.282, 5.10.224, 5.15.165, 6.1.105, 6.6.46, 6.10.5
Complete source record
{
"id": "afea864400f1bd72f4ef9fecda74c63550d3d0daec3555c725428f036caf5dea",
"url": "https://osv.dev/vulnerability/CVE-2024-43890",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "tracing: Fix overflow in get_free_elt()",
"summary": "In the Linux kernel, the following vulnerability has been resolved: tracing: Fix overflow in get_free_elt() \"tracing_map->next_elt\" in get_free_elt() is at risk of overflowing. Once it overflows, new elements can still be inserted into the tracing_map even though the maximum number of elements (`max_elts`) has been reached. Continuing to insert elements after the overflow could result in the tracing_map containing \"tracing_map->max_size\" elements, leaving no empty entries. If any attempt is made to insert an element into a full tracing_map using `__tracing_map_insert()`, it will cause an infinite loop with preemption disabled, leading to a CPU hang problem. Fix this by preventing any further increments to \"tracing_map->next_elt\" once it reaches \"tracing_map->max_elt\".",
"evidence": "osv:CVE-2024-43890",
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"modified": "2026-10-28T02:30:40.527328243Z",
"provider": "osv",
"references": [
"https://cert-portal.siemens.com/productcert/html/ssa-265688.html",
"https://cert-portal.siemens.com/productcert/html/ssa-355557.html",
"https://cert-portal.siemens.com/productcert/html/ssa-613116.html",
"https://git.kernel.org/stable/c/236bb4690773ab6869b40bedc7bc8d889e36f9d6",
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"https://git.kernel.org/stable/c/d3e4dbc2858fe85d1dbd2e72a9fc5dea988b5c18",
"https://git.kernel.org/stable/c/eb223bf01e688dfe37e813c8988ee11c8c9f8d0a",
"https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html",
"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/43xxx/CVE-2024-43890.json",
"https://nvd.nist.gov/vuln/detail/CVE-2024-43890",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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"provider_metadata": {
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"related_cves": [
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"evidence": "/id"
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"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 507898,
"published_at": "2024-08-26T10:10:43.547+00:00"
}