{"id":"CVE-2025-38300","summary":"crypto: sun8i-ce-cipher - fix error handling in sun8i_ce_cipher_prepare()","details":"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-\u003edst, 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.","modified":"2026-04-16T04:33:40.371229216Z","published":"2025-07-10T07:42:12.826Z","related":["SUSE-SU-2025:02853-1","SUSE-SU-2025:02923-1","SUSE-SU-2025:02969-1","SUSE-SU-2025:02996-1","SUSE-SU-2025:02997-1","SUSE-SU-2025:03011-1","SUSE-SU-2025:03023-1","SUSE-SU-2025:20577-1","SUSE-SU-2025:20586-1","SUSE-SU-2025:20601-1","SUSE-SU-2025:20602-1","SUSE-SU-2025:21074-1","SUSE-SU-2025:21139-1","SUSE-SU-2025:21179-1","openSUSE-SU-2025:20081-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38300.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/19d267d9fad00d94ad8477899e38ed7c11f33fb6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4051250e5db489f8ad65fc337e2677b9b568ac72"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a0ac3f85b2e3ef529e852f252a70311f9029d5e6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c62b79c1c51303dbcb6edfa4de0ee176f4934c52"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f31adc3e356f7350d4a4d68c98d3f60f2f6e26b3"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38300.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-38300"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"06f751b613296cc34b86fc83fccaf30d646eb8bc"},{"fixed":"a0ac3f85b2e3ef529e852f252a70311f9029d5e6"},{"fixed":"c62b79c1c51303dbcb6edfa4de0ee176f4934c52"},{"fixed":"19d267d9fad00d94ad8477899e38ed7c11f33fb6"},{"fixed":"4051250e5db489f8ad65fc337e2677b9b568ac72"},{"fixed":"f31adc3e356f7350d4a4d68c98d3f60f2f6e26b3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38300.json"}}],"schema_version":"1.7.5"}