CVE-2026-31638
Published: Apr 24, 2026
Modified: May 11, 2026
CVSS v3.1
7.5
Description
In the Linux kernel, the following vulnerability has been resolved: rxrpc: Only put the call ref if one was acquired rxrpc_input_packet_on_conn() can process a to-client packet after the current client call on the channel has already been torn down. In that case chan->call is NULL, rxrpc_try_get_call() returns NULL and there is no reference to drop. The client-side implicit-end error path does not account for that and unconditionally calls rxrpc_put_call(). This turns a protocol error path into a kernel crash instead of rejecting the packet. Only drop the call reference if one was actually acquired. Keep the existing protocol error handling unchanged.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected 5e6ef4f1017c7f844e305283bbd8875af475e2fc - < b8f66447448d6c305a51413a67ec8ed26aa7d1ddaffected 5e6ef4f1017c7f844e305283bbd8875af475e2fc - < 0c156aff8a2d4fa0d61db7837641975cf0e5452daffected 5e6ef4f1017c7f844e305283bbd8875af475e2fc - < 8299ca146489664e3c0c90a3b8900d8335b1ede4affected 5e6ef4f1017c7f844e305283bbd8875af475e2fc - < 9fb09861e2b8d1abfe2efaf260c9f1d30080ea38affected 5e6ef4f1017c7f844e305283bbd8875af475e2fc - < 6331f1b24a3e85465f6454e003a3e6c22005a5c5 |
Linux | Linux | affected 6.2unaffected 0 - < 6.2unaffected 6.6.135 - <= 6.6.*unaffected 6.12.82 - <= 6.12.*unaffected 6.18.23 - <= 6.18.*+2 more versions |
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
Security Training
Train your team to recognize and prevent security threats with our comprehensive security awareness program.
Start TrainingVulnerability Scanning
Discover vulnerabilities in your applications and infrastructure before attackers do.
Scan Now