CVE-2025-38514

rxrpc: Fix oops due to non-existence of prealloc backlog struct

State: Published
Severity: 7.5 High
Published: Aug 16, 2025
Updated: Oct 15, 2026
Reserved: Apr 16, 2025

Description

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

rxrpc: Fix oops due to non-existence of prealloc backlog struct

If an AF_RXRPC service socket is opened and bound, but calls are preallocated, then rxrpc_alloc_incoming_call() will oops because the rxrpc_backlog struct doesn't get allocated until the first preallocation is made.

Fix this by returning NULL from rxrpc_alloc_incoming_call() if there is no backlog struct. This will cause the incoming call to be aborted.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	248f219cb8bcbfbd7f132752d44afa2df7c241d1 to before bf0ca6a1bc4fb904b598137c6718785a107e3adfAffected 248f219cb8bcbfbd7f132752d44afa2df7c241d1 to before f7afb3ff01c42c49e8a143cdce400b95844bb506Affected 248f219cb8bcbfbd7f132752d44afa2df7c241d1 to before f5e72b7824d08c206ce106d30cb37c4642900cccAffected 248f219cb8bcbfbd7f132752d44afa2df7c241d1 to before 0eef29385d715d4c7fd707b18d4a9b76c76dd5e6Affected 248f219cb8bcbfbd7f132752d44afa2df7c241d1 to before efc1b2b7c1a308b60df8f36bc2d7ce16d3999364Affected 248f219cb8bcbfbd7f132752d44afa2df7c241d1 to before d1ff5f9d2c5405681457262e23c720b08977c11fAffected 248f219cb8bcbfbd7f132752d44afa2df7c241d1 to before 2c2e9ebeb036f9b1b09325ec5cfdfe0e78f357c3Affected 248f219cb8bcbfbd7f132752d44afa2df7c241d1 to before 880a88f318cf1d2a0f4c0a7ff7b07e2062b434a4Affected
LinuxLinux	4.9Affected before 4.9Not affected 5.4.296 through 5.4.Not affected 5.10.240 through 5.10.Not affected 5.15.189 through 5.15.Not affected 6.1.146 through 6.1.Not affected 6.6.99 through 6.6.Not affected 6.12.39 through 6.12.Not affected 6.15.7 through 6.15.*Not affected 6.16 and laterNot affected

Product

Versions

LinuxLinux

248f219cb8bcbfbd7f132752d44afa2df7c241d1 to before bf0ca6a1bc4fb904b598137c6718785a107e3adfAffected
248f219cb8bcbfbd7f132752d44afa2df7c241d1 to before f7afb3ff01c42c49e8a143cdce400b95844bb506Affected
248f219cb8bcbfbd7f132752d44afa2df7c241d1 to before f5e72b7824d08c206ce106d30cb37c4642900cccAffected
248f219cb8bcbfbd7f132752d44afa2df7c241d1 to before 0eef29385d715d4c7fd707b18d4a9b76c76dd5e6Affected
248f219cb8bcbfbd7f132752d44afa2df7c241d1 to before efc1b2b7c1a308b60df8f36bc2d7ce16d3999364Affected
248f219cb8bcbfbd7f132752d44afa2df7c241d1 to before d1ff5f9d2c5405681457262e23c720b08977c11fAffected
248f219cb8bcbfbd7f132752d44afa2df7c241d1 to before 2c2e9ebeb036f9b1b09325ec5cfdfe0e78f357c3Affected
248f219cb8bcbfbd7f132752d44afa2df7c241d1 to before 880a88f318cf1d2a0f4c0a7ff7b07e2062b434a4Affected

LinuxLinux

4.9Affected
before 4.9Not affected
5.4.296 through 5.4.*Not affected
5.10.240 through 5.10.*Not affected
5.15.189 through 5.15.*Not affected
6.1.146 through 6.1.*Not affected
6.6.99 through 6.6.*Not affected
6.12.39 through 6.12.*Not affected
6.15.7 through 6.15.*Not affected
6.16 and laterNot affected

References

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