CVE-2025-38300 Information

Jul 12, 2025 cve

Description

In the Linux kernel the following vulnerability has been resolved:

crypto: sun8i-ce-cipher - fix error handling in sun8i_ce_cipher_prepare()

Fix two DMA cleanup issues on the error path in sun8i_ce_cipher_prepare():

1] If dma_map_sg() fails for areq->dst the device driver would try to free DMA memory it has not allocated in the first place. To fix this on the heend_sgs\ error path call dma unmap only if the corresponding dma map was successful.

2] If the dma_map_single() call for the IV fails the device driver would try to free an invalid DMA memory address on the heend_iv\ path: ————[ cut here ]———— DMA-API: sun8i-ce 1904000.crypto: device driver tries to free an invalid DMA memory address WARNING: CPU: 2 PID: 69 at kernel/dma/debug.c:968 check_unmap+0x123c/0x1b90 Modules linked in: skcipher_example(O+) CPU: 2 UID: 0 PID: 69 Comm: 1904000.crypto- Tainted: G O 6.15.0-rc3+ 24 PREEMPT Tainted: [O]=OOT_MODULE Hardware name: OrangePi Zero2 (DT) pc : check_unmap+0x123c/0x1b90 lr : check_unmap+0x123c/0x1b90 … Call trace: check_unmap+0x123c/0x1b90 (P) debug_dma_unmap_page+0xac/0xc0 dma_unmap_page_attrs+0x1f4/0x5fc sun8i_ce_cipher_do_one+0x1bd4/0x1f40 crypto_pump_work+0x334/0x6e0 kthread_worker_fn+0x21c/0x438 kthread+0x374/0x664 ret_from_fork+0x10/0x20 —[ end trace 0000000000000000 ]—

To fix this check for !dma_mapping_error() before calling dma_unmap_single() on the heend_iv\ path.

Reference

https://git.kernel.org/stable/c/19d267d9fad00d94ad8477899e38ed7c11f33fb6 https://git.kernel.org/stable/c/4051250e5db489f8ad65fc337e2677b9b568ac72 https://git.kernel.org/stable/c/a0ac3f85b2e3ef529e852f252a70311f9029d5e6 https://git.kernel.org/stable/c/c62b79c1c51303dbcb6edfa4de0ee176f4934c52 https://git.kernel.org/stable/c/f31adc3e356f7350d4a4d68c98d3f60f2f6e26b3

CNNVD-202507-1428 (Published: 2025-07-10)

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