capnproto, rust-capnp — security advisory
Cap'n Proto is a data interchange format and remote procedure call (RPC) system. Cap'n Proro prior to versions 0.7.1, 0.8.1, 0.9.2, and 0.10.3, as well as versions of Cap'n Proto's Rust implementation prior to 0.13.7, 0.14.11, and 0.15.2 are vulnerable to out-of-bounds read due to logic error handling list-of-list. This issue may lead someone to remotely segfault a peer by sending it a malicious message, if the victim performs certain actions on a list-of-pointer type. Exfiltration of memory is possible if the victim performs additional certain actions on a list-of-pointer type. To be vulnerable, an application must perform a specific sequence of actions, described in the GitHub Security Advisory. The bug is present in inlined code, therefore the fix will require rebuilding dependent applications. Cap'n Proto has C++ fixes available in versions 0.7.1, 0.8.1, 0.9.2, and 0.10.3. The `capnp` Rust crate has fixes available in versions 0.13.7, 0.14.11, and 0.15.2.
- Products
- capnproto, rust-capnp
- Affected versions
- Not specified
- Fixed versions
- 0.14.11-1.1, 0.9.2-2
- CVEs
- CVE-2022-46149
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 14:53 UTC · Revision 1
Source evidence
Cap'n Proto is a data interchange format and remote procedure call (RPC) system. Cap'n Proro prior to versions 0.7.1, 0.8.1, 0.9.2, and 0.10.3, as well as versions of Cap'n Proto's Rust implementation prior to 0.13.7, 0.14.11, and 0.15.2 are vulnerable to out-of-bounds read due to logic error handling list-of-list. This issue may lead someone to remotely segfault a peer by sending it a malicious message, if the victim performs certain actions on a list-of-pointer type. Exfiltration of memory is possible if the victim performs additional certain actions on a list-of-pointer type. To be vulnerable, an application must perform a specific sequence of actions, described in the GitHub Security Advisory. The bug is present in inlined code, therefore the fix will require rebuilding dependent applications. Cap'n Proto has C++ fixes available in versions 0.7.1, 0.8.1, 0.9.2, and 0.10.3. The `capnp` Rust crate has fixes available in versions 0.13.7, 0.14.11, and 0.15.2.
osv:DEBIAN-CVE-2022-46149
capnproto
Fixed versions: 0.9.2-2
capnproto
Fixed versions: 0.9.2-2
capnproto
Fixed versions: 0.9.2-2
rust-capnp
Fixed versions: 0.14.11-1.1
rust-capnp
Fixed versions: 0.14.11-1.1
rust-capnp
Fixed versions: 0.14.11-1.1
Complete source record
{
"id": "f400a8b0820e7aaff6ebb6f3c1b7670b5bdca7e09e241d9bf0cf07ab6b0342b6",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2022-46149",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2022-46149",
"summary": "Cap'n Proto is a data interchange format and remote procedure call (RPC) system. Cap'n Proro prior to versions 0.7.1, 0.8.1, 0.9.2, and 0.10.3, as well as versions of Cap'n Proto's Rust implementation prior to 0.13.7, 0.14.11, and 0.15.2 are vulnerable to out-of-bounds read due to logic error handling list-of-list. This issue may lead someone to remotely segfault a peer by sending it a malicious message, if the victim performs certain actions on a list-of-pointer type. Exfiltration of memory is possible if the victim performs additional certain actions on a list-of-pointer type. To be vulnerable, an application must perform a specific sequence of actions, described in the GitHub Security Advisory. The bug is present in inlined code, therefore the fix will require rebuilding dependent applications. Cap'n Proto has C++ fixes available in versions 0.7.1, 0.8.1, 0.9.2, and 0.10.3. The `capnp` Rust crate has fixes available in versions 0.13.7, 0.14.11, and 0.15.2.",
"evidence": "osv:DEBIAN-CVE-2022-46149",
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"severity": "medium",
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"aliases": [
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"modified": "2026-10-15T08:02:33.882229242Z",
"provider": "osv",
"upstream": [
"CVE-2022-46149"
],
"references": [
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]
},
"related_cves": [
{
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"evidence": "/upstream"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 323638,
"published_at": "2022-11-30T17:15:10.097+00:00"
}