Answer in brief
CVE-2024-47659 records a Critical severity (CVSS 9.1) vulnerability in smack: tcp: ipv4, fix incorrect labeling. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=07feee8f812f7327a46186f7604df312c8c81962 <d3f56c653c65f170b172d3c23120bc64ada645d8 || >=07feee8f812f7327a46186f7604df312c8c81962 <5b4b304f196c070342e32a4752e1fa2e22fc0671 || >=07feee8f812f7327a46186f7604df312c8c81962 <a948ec993541db4ef392b555c37a1186f4d61670 || >=07feee8f812f7327a46186f7604df312c8c81962 <0aea09e82eafa50a373fc8a4b84c1d4734751e2c || >=07feee8f812f7327a46186f7604df312c8c81962 <0776bcf9cb6de46fdd94d10118de1cf9b05f83b9 || >=07feee8f812f7327a46186f7604df312c8c81962 <4be9fd15c3c88775bdf6fa37acabe6de85beebff || >=07feee8f812f7327a46186f7604df312c8c81962 <d3703fa94116fed91f64c7d1c7d284fb4369070f || >=07feee8f812f7327a46186f7604df312c8c81962 <2fe209d0ad2e2729f7e22b9b31a86cc3ff0db550 | d3f56c653c65f170b172d3c23120bc64ada645d8, 5b4b304f196c070342e32a4752e1fa2e22fc0671, a948ec993541db4ef392b555c37a1186f4d61670, 0aea09e82eafa50a373fc8a4b84c1d4734751e2c, 0776bcf9cb6de46fdd94d10118de1cf9b05f83b9, 4be9fd15c3c88775bdf6fa37acabe6de85beebff, d3703fa94116fed91f64c7d1c7d284fb4369070f, 2fe209d0ad2e2729f7e22b9b31a86cc3ff0db550 |
| Linux/Linuxgeneric | 2.6.30 | Not reported |
Published upstream
Oct 9, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: smack: tcp: ipv4, fix incorrect labeling Currently, Smack mirrors the label of incoming tcp/ipv4 connections: when a label 'foo' connects to a label 'bar' with tcp/ipv4, 'foo' always gets 'foo' in returned ipv4 packets. So, 1) returned packets are incorrectly labeled ('foo' instead of 'bar') 2) 'bar' can write to 'foo' without being authorized to write. Here is a scenario how to see this: * Take two machines, let's call them C and S, with active Smack in the default state (no settings, no rules, no labeled hosts, only builtin labels) * At S, add Smack rule 'foo bar w' (labels 'foo' and 'bar' are instantiated at S at this moment) * At S, at label 'bar', launch a program that listens for incoming tcp/ipv4 connections * From C, at label 'foo', connect to the listener at S. (label 'foo' is instantiated at C at this moment) Connection succeedes and works. * Send some data in both directions. * Collect network traffic of this connection. All packets in both directions are labeled with the CIPSO of the label 'foo'. Hence, label 'bar' writes to 'foo' without being authorized, and even without ever being known at C. If anybody cares: exactly the same happens with DCCP. This behavior 1st manifested in release 2.6.29.4 (see Fixes below) and it looks unintentional. At least, no explanation was provided. I changed returned packes label into the 'bar', to bring it into line with the Smack documentation claims.
Quoted source text, attributed separately from HOL analysis.