Answer in brief
CVE-2026-74283 records a Unknown severity vulnerability in tipc: require net admin for TIPCv2 netlink mutators. 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.
Answer in brief
CVE-2026-74283 records a Unknown severity vulnerability in tipc: require net admin for TIPCv2 netlink mutators. 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.
A CVSS score is not reported in the current record. 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 | >=0655f6a8635b1b66f2434d5556b1044c14b1ccaf <b06fb5f78a9af0929aaa47c92d0b7bca0617fb25 || >=0655f6a8635b1b66f2434d5556b1044c14b1ccaf <52864c6c13dcc292481eabfeb3c31a86c3ec06f2 || >=0655f6a8635b1b66f2434d5556b1044c14b1ccaf <e87dcc1a644d087de0bb6c94c6dd28c29b89597f || >=0655f6a8635b1b66f2434d5556b1044c14b1ccaf <9b937de4b3ded62a24da6e8d9d623cdb2748fa74 || >=0655f6a8635b1b66f2434d5556b1044c14b1ccaf <c9668a4adb2264625daeeabc7466b783badd4614 || >=0655f6a8635b1b66f2434d5556b1044c14b1ccaf <cebaefe1aceb650d5c99a4c0e1a4dde09e211818 || >=0655f6a8635b1b66f2434d5556b1044c14b1ccaf <56f0a2e0a1d004e025cd031c3a801ab73959269f || >=0655f6a8635b1b66f2434d5556b1044c14b1ccaf <86b0c540e2ea397cde021eecd24145f7c16a3d4e | b06fb5f78a9af0929aaa47c92d0b7bca0617fb25, 52864c6c13dcc292481eabfeb3c31a86c3ec06f2, e87dcc1a644d087de0bb6c94c6dd28c29b89597f, 9b937de4b3ded62a24da6e8d9d623cdb2748fa74, c9668a4adb2264625daeeabc7466b783badd4614, cebaefe1aceb650d5c99a4c0e1a4dde09e211818, 56f0a2e0a1d004e025cd031c3a801ab73959269f, 86b0c540e2ea397cde021eecd24145f7c16a3d4e |
| Linux/Linuxgeneric | 3.19 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: tipc: require net admin for TIPCv2 netlink mutators TIPCv2 registers mutating generic-netlink operations without admin permission flags. Generic netlink only checks CAP_NET_ADMIN when an operation sets GENL_ADMIN_PERM or GENL_UNS_ADMIN_PERM, so a local unprivileged process can currently change TIPC state through commands such as TIPC_NL_NET_SET, TIPC_NL_KEY_SET, TIPC_NL_KEY_FLUSH, and bearer enable/disable. The legacy TIPC netlink API already checks netlink_net_capable(..., CAP_NET_ADMIN) for administrative commands. Give the TIPCv2 mutators the equivalent generic-netlink gate. Use GENL_UNS_ADMIN_PERM, which maps to the same namespace-aware CAP_NET_ADMIN check that netlink_net_capable() performs, so the behaviour matches the legacy path and keeps working for CAP_NET_ADMIN holders in a non-initial user namespace (containers). A QEMU/KASAN repro run as uid/gid 65534 with zero effective capabilities previously succeeded in changing the network id and node identity, setting and flushing key material, and enabling/disabling a UDP bearer. With this patch applied the same operations fail with -EPERM.
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. 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 | >=0655f6a8635b1b66f2434d5556b1044c14b1ccaf <b06fb5f78a9af0929aaa47c92d0b7bca0617fb25 || >=0655f6a8635b1b66f2434d5556b1044c14b1ccaf <52864c6c13dcc292481eabfeb3c31a86c3ec06f2 || >=0655f6a8635b1b66f2434d5556b1044c14b1ccaf <e87dcc1a644d087de0bb6c94c6dd28c29b89597f || >=0655f6a8635b1b66f2434d5556b1044c14b1ccaf <9b937de4b3ded62a24da6e8d9d623cdb2748fa74 || >=0655f6a8635b1b66f2434d5556b1044c14b1ccaf <c9668a4adb2264625daeeabc7466b783badd4614 || >=0655f6a8635b1b66f2434d5556b1044c14b1ccaf <cebaefe1aceb650d5c99a4c0e1a4dde09e211818 || >=0655f6a8635b1b66f2434d5556b1044c14b1ccaf <56f0a2e0a1d004e025cd031c3a801ab73959269f || >=0655f6a8635b1b66f2434d5556b1044c14b1ccaf <86b0c540e2ea397cde021eecd24145f7c16a3d4e | b06fb5f78a9af0929aaa47c92d0b7bca0617fb25, 52864c6c13dcc292481eabfeb3c31a86c3ec06f2, e87dcc1a644d087de0bb6c94c6dd28c29b89597f, 9b937de4b3ded62a24da6e8d9d623cdb2748fa74, c9668a4adb2264625daeeabc7466b783badd4614, cebaefe1aceb650d5c99a4c0e1a4dde09e211818, 56f0a2e0a1d004e025cd031c3a801ab73959269f, 86b0c540e2ea397cde021eecd24145f7c16a3d4e |
| Linux/Linuxgeneric | 3.19 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: tipc: require net admin for TIPCv2 netlink mutators TIPCv2 registers mutating generic-netlink operations without admin permission flags. Generic netlink only checks CAP_NET_ADMIN when an operation sets GENL_ADMIN_PERM or GENL_UNS_ADMIN_PERM, so a local unprivileged process can currently change TIPC state through commands such as TIPC_NL_NET_SET, TIPC_NL_KEY_SET, TIPC_NL_KEY_FLUSH, and bearer enable/disable. The legacy TIPC netlink API already checks netlink_net_capable(..., CAP_NET_ADMIN) for administrative commands. Give the TIPCv2 mutators the equivalent generic-netlink gate. Use GENL_UNS_ADMIN_PERM, which maps to the same namespace-aware CAP_NET_ADMIN check that netlink_net_capable() performs, so the behaviour matches the legacy path and keeps working for CAP_NET_ADMIN holders in a non-initial user namespace (containers). A QEMU/KASAN repro run as uid/gid 65534 with zero effective capabilities previously succeeded in changing the network id and node identity, setting and flushing key material, and enabling/disabling a UDP bearer. With this patch applied the same operations fail with -EPERM.
Quoted source text, attributed separately from HOL analysis.