Out-of-bounds write when parsing AR Vendor Block requests
Impact
P-Net before 1.0.3, with PNET_OPTION_AR_VENDOR_BLOCKS enabled, is vulnerable to an out-of-bounds write when parsing AR Vendor Block requests, potentially leading to a crash or arbitrary code execution. The vulnerability is caused by a crafted Connect request. This option is disabled by default.
Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.What to do
Upgrade to P-Net 1.0.3 or later.
Affected packages
Affected products
Vendor version evidence. Product records are separate from automatic dependency matching.
RT-Labs · rt-labs
P-Net
1 range
RT-Labs · rt-labs
P-Net
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affected
0 → before 1.0.3
semver versions
Other versions: unaffected
Original source description
P-Net before 1.0.3, when built with PNET_OPTION_AR_VENDOR_BLOCKS enabled, parses a data length from a field of the ARVendorBlock request that is not part of the block definition and uses it as the number of bytes to copy into a fixed-size buffer, without comparing it with the buffer size or the block length. A crafted Connect request causes an out-of-bounds write. This can lead to a crash (denial of service) or potentially arbitrary code execution.
This option is disabled by default.
Inside the record
Evidence available
Describes the evidence in this view, not whether the product is safe.
Original records
CVE-2026-111732View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.
cve.new JSON →Underlying weaknesses
The source’s classification of what caused the vulnerability.
Contributing organizations · 1
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What changed
Follow changesLarge field values are marked as truncated previews. Original source snapshots remain retained.