Answer in brief
CVE-2026-68140 records a High severity (CVSS 8.8) vulnerability in net/iucv: fix use-after-free of a severed iucv_path. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), 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 8.8. 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), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=f0703c80e5156406ad947cb67fe277725b48080f <23658b350b4107e8292045c2044983fd426fa15d || >=f0703c80e5156406ad947cb67fe277725b48080f <a5bbaddf69853117f28173c3f5c8fc14c6b2ec82 || >=f0703c80e5156406ad947cb67fe277725b48080f <900cd6d8119b7f3ae5c4bf82f922ff5957df43db || >=f0703c80e5156406ad947cb67fe277725b48080f <f579582c03ed526281a8450159baf1d35099a85f || >=f0703c80e5156406ad947cb67fe277725b48080f <be7cc4656eb1f54029610e82d1f0fdd3f9b5ec0a | 23658b350b4107e8292045c2044983fd426fa15d, a5bbaddf69853117f28173c3f5c8fc14c6b2ec82, 900cd6d8119b7f3ae5c4bf82f922ff5957df43db, f579582c03ed526281a8450159baf1d35099a85f, be7cc4656eb1f54029610e82d1f0fdd3f9b5ec0a |
| Linux/Linuxgeneric | 2.6.24 | Not reported |
| Linux/Linuxgeneric | >=f0703c80e5156406ad947cb67fe277725b48080f <5f08c5e50bcb4680069bd3f9edd5728308816ded || >=f0703c80e5156406ad947cb67fe277725b48080f <c24faf11bd31bfe0500aca12cbdd5a573a954a5d || >=f0703c80e5156406ad947cb67fe277725b48080f <99ddb33748698296a6f17b9b34aa3d16a406bb3c || >=f0703c80e5156406ad947cb67fe277725b48080f <23658b350b4107e8292045c2044983fd426fa15d || >=f0703c80e5156406ad947cb67fe277725b48080f <a5bbaddf69853117f28173c3f5c8fc14c6b2ec82 || >=f0703c80e5156406ad947cb67fe277725b48080f <900cd6d8119b7f3ae5c4bf82f922ff5957df43db || >=f0703c80e5156406ad947cb67fe277725b48080f <f579582c03ed526281a8450159baf1d35099a85f || >=f0703c80e5156406ad947cb67fe277725b48080f <be7cc4656eb1f54029610e82d1f0fdd3f9b5ec0a | 5f08c5e50bcb4680069bd3f9edd5728308816ded, c24faf11bd31bfe0500aca12cbdd5a573a954a5d, 99ddb33748698296a6f17b9b34aa3d16a406bb3c, 23658b350b4107e8292045c2044983fd426fa15d, a5bbaddf69853117f28173c3f5c8fc14c6b2ec82, 900cd6d8119b7f3ae5c4bf82f922ff5957df43db, f579582c03ed526281a8450159baf1d35099a85f, be7cc4656eb1f54029610e82d1f0fdd3f9b5ec0a |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
In the Linux kernel, the following vulnerability has been resolved: net/iucv: fix use-after-free of a severed iucv_path af_iucv queues not-yet-received message notifications on iucv->message_q, each holding a raw pointer to the connection's iucv_path. When the peer severs the connection, iucv_sever_path() frees that path with iucv_path_free() but leaves the notifications queued. A later recvmsg() drains message_q via iucv_process_message_q() and hands the stale path to message_receive() -- a use-after-free of the freed iucv_path. Drop the queued notifications when the path is severed; once the path is gone they can no longer be received. This also frees the notifications leaked when a socket is closed with messages still queued.
Quoted source text, attributed separately from HOL analysis.