CVE-2026-74429

Summary

In the Linux kernel, the following vulnerability has been resolved:

rxrpc: Fix the reception of a reply packet before data transmission

Fix rxrpc_receiving_reply() to handle the reception of an apparent reply DATA packet before rxrpc has had a chance to send any request DATA packets on a client call by checking to see if the call has been exposed yet by sending the first packet.

Without this, rxrpc_rotate_tx_window() might oops.

Also fix rxrpc_rotate_tx_window() to handle the Tx queue being empty by changing the do…while loop into a while loop, just in case a call is abnormally terminated by an early reply before the last request packet is transmitted.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxb341a0263b1b804d329f864c2dc24815364510ec < f9be514984471ff0003738b2e1efed12bc3433ffaffected
LinuxLinuxb341a0263b1b804d329f864c2dc24815364510ec < e220ae559e5a0fc33e41ec6a348ea50387cb8b0faffected
LinuxLinuxb341a0263b1b804d329f864c2dc24815364510ec < a58e33405acd2584e730c1da72635f822ada6b49affected
LinuxLinux6.14affected
LinuxLinux0 < 6.14unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2-rc1 <= *unaffected

Weaknesses

References