{"cve":"CVE-2025-38300","nvd":{"published":"2025-07-10T08:15:28.740","modified":"2026-06-17T09:16:34.707","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: sun8i-ce-cipher - fix error handling in sun8i_ce_cipher_prepare()\n\nFix two DMA cleanup issues on the error path in sun8i_ce_cipher_prepare():\n\n1] If dma_map_sg() fails for areq->dst, the device driver would try to free\n   DMA memory it has not allocated in the first place. To fix this, on the\n   \"theend_sgs\" error path, call dma unmap only if the corresponding dma\n   map was successful.\n\n2] If the dma_map_single() call for the IV fails, the device driver would\n   try to free an invalid DMA memory address on the \"theend_iv\" path:\n   ------------[ cut here ]------------\n   DMA-API: sun8i-ce 1904000.crypto: device driver tries to free an invalid DMA memory address\n   WARNING: CPU: 2 PID: 69 at kernel/dma/debug.c:968 check_unmap+0x123c/0x1b90\n   Modules linked in: skcipher_example(O+)\n   CPU: 2 UID: 0 PID: 69 Comm: 1904000.crypto- Tainted: G           O        6.15.0-rc3+ #24 PREEMPT\n   Tainted: [O]=OOT_MODULE\n   Hardware name: OrangePi Zero2 (DT)\n   pc : check_unmap+0x123c/0x1b90\n   lr : check_unmap+0x123c/0x1b90\n   ...\n   Call trace:\n    check_unmap+0x123c/0x1b90 (P)\n    debug_dma_unmap_page+0xac/0xc0\n    dma_unmap_page_attrs+0x1f4/0x5fc\n    sun8i_ce_cipher_do_one+0x1bd4/0x1f40\n    crypto_pump_work+0x334/0x6e0\n    kthread_worker_fn+0x21c/0x438\n    kthread+0x374/0x664\n    ret_from_fork+0x10/0x20\n   ---[ end trace 0000000000000000 ]---\n\nTo fix this, check for !dma_mapping_error() before calling\ndma_unmap_single() on the \"theend_iv\" path.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-401"],"references":["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"],"products":["debian:debian_linux","linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:04:28.436527499+00:00"},"epss":{"cve":"CVE-2025-38300","score":0.00176,"percentile":0.07143,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}