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CVE-2025-68252: Linux Kernel fastrpc Service Leaks Memory
CVE-2025-68252 · published 10 months ago
Summary
A bug in the Linux kernel's fastrpc service can cause memory leaks if not fixed. This affects the performance and reliability of systems using fastrpc. To protect your system, ensure you have the latest updates installed to address this issue.
What to do
- Update linux kernel to version 6.17.6.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Linux | linux | kernel |
>= 6.17.3, < 6.17.6 Fix: upgrade to 6.17.6
|
Original advisory text
misc: fastrpc: Fix dma_buf object leak in fastrpc_map_lookup
In the Linux kernel, the following vulnerability has been resolved:
misc: fastrpc: Fix dma_buf object leak in fastrpc_map_lookup
In fastrpc_map_lookup, dma_buf_get is called to obtain a reference to
the dma_buf for comparison purposes. However, this reference is never
released when the function returns, leading to a dma_buf memory leak.
Fix this by adding dma_buf_put before returning from the function,
ensuring that the temporarily acquired reference is properly released
regardless of whether a matching map is found.
Rule: add
misc: fastrpc: Fix dma_buf object leak in fastrpc_map_lookup
In fastrpc_map_lookup, dma_buf_get is called to obtain a reference to
the dma_buf for comparison purposes. However, this reference is never
released when the function returns, leading to a dma_buf memory leak.
Fix this by adding dma_buf_put before returning from the function,
ensuring that the temporarily acquired reference is properly released
regardless of whether a matching map is found.
Rule: add
References
- https://git.kernel.org/stable/c/214e81a63a9aa0be42382ef0365ba5ed32c513ab URL
- https://git.kernel.org/stable/c/9a297a68c3ba4a7ecb31ed52f61bd6634abb79d3 URL
- https://git.kernel.org/stable/c/c2fef5ebb73f3dabae6fbc571d181914ed32c483 URL
- https://git.kernel.org/stable/c/e17b13387827adce7acb19ac0f07f9bcafe0ff4c URL
- https://git.kernel.org/stable/c/fff111bf45cbeeb659324316d68554e35d350092 URL
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68252... Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2025-68252 Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git Product
Timeline
Published16 Dec 2025
Updated30 Oct 2026
First seen7 Mar 2026
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