HighFix available
arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array The loop that detects/populates cache information already has a bounds check on the array size but does not account for cache levels with separate data/instructions cache. Fix this by incrementing the index for any populated leaf (instead of any populated level).
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.235, 5.15.179, 5.4.291, 6.1.129, 6.12.16, 6.13.4, 6.6.79
- CVEs
- CVE-2025-21785
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 6 Nov 2026, 18:09 UTC · Revision 1
Source evidence
arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array
core-osv · Original sourcePublished 27 Feb 2025, 02:18 UTC
In the Linux kernel, the following vulnerability has been resolved: arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array The loop that detects/populates cache information already has a bounds check on the array size but does not account for cache levels with separate data/instructions cache. Fix this by incrementing the index for any populated leaf (instead of any populated level).
osv:CVE-2025-21785
Kernel
Fixed versions: 5.4.291, 5.10.235, 5.15.179, 6.1.129, 6.6.79, 6.12.16, 6.13.4
Complete source record
{
"id": "57b7491592eed0e94e3e13b658b07a400e54f7816658c99598b9baa6f105e1f5",
"url": "https://osv.dev/vulnerability/CVE-2025-21785",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array",
"summary": "In the Linux kernel, the following vulnerability has been resolved: arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array The loop that detects/populates cache information already has a bounds check on the array size but does not account for cache levels with separate data/instructions cache. Fix this by incrementing the index for any populated leaf (instead of any populated level).",
"evidence": "osv:CVE-2025-21785",
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"package": {
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"ecosystem": "Linux"
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"modified": "2026-10-28T02:30:48.059116320Z",
"provider": "osv",
"references": [
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"https://git.kernel.org/stable/c/4ff25f0b18d1d0174c105e4620428bcdc1213860",
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"https://git.kernel.org/stable/c/875d742cf5327c93cba1f11e12b08d3cce7a88d2",
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"https://git.kernel.org/stable/c/e4fde33107351ec33f1a64188612fbc6ca659284",
"https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html",
"https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21785.json",
"https://nvd.nist.gov/vuln/detail/CVE-2025-21785",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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"provider_metadata": {
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"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21785.json"
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},
"related_cves": [
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"evidence": "/id"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 515850,
"published_at": "2025-02-27T02:18:25.938+00:00"
}