CVE-2026-46012
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Memory Leak in Linux Kernel rxrpc

Publication date: 2026-05-27

Last updated on: 2026-06-16

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix memory leaks in rxkad_verify_response() Fix rxkad_verify_response() to free the ticket and the server key under all circumstances by initialising the ticket pointer to NULL and then making all paths through the function after the first allocation has been done go through a single common epilogue that just releases everything - where all the releases skip on a NULL pointer.
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Meta Information
Published
2026-05-27
Last Modified
2026-06-16
Generated
2026-06-16
AI Q&A
2026-05-27
EPSS Evaluated
2026-06-15
NVD
CVE-2026-46012
EUVD
EUVD-2026-32309
Affected Vendors & Products
Showing 4 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 6.7 (inc) to 6.12.86 (exc)
linux linux_kernel From 6.13 (inc) to 6.18.27 (exc)
linux linux_kernel From 6.19 (inc) to 7.0.4 (exc)
linux linux_kernel From 5.11 (inc) to 6.6.140 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-401 The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
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Executive Summary

This vulnerability is a memory leak issue in the Linux kernel's rxrpc component, specifically in the function rxkad_verify_response().

The problem was that the function did not properly free allocated memory for the ticket and the server key in all execution paths, which could lead to memory not being released.

The fix involved initializing the ticket pointer to NULL and ensuring that all code paths after the first allocation go through a single common cleanup section that releases all allocated resources, skipping any NULL pointers.

Impact Analysis

This vulnerability can lead to memory leaks in the Linux kernel when processing rxrpc responses.

Memory leaks can cause increased memory usage over time, potentially leading to degraded system performance or system instability if the leaked memory accumulates.

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