In the Linux kernel, the following vulnerability has been resolved:
crypto: sun8i-ce-cipher - fix error handling in sun8icecipher_prepare()
Fix two DMA cleanup issues on the error path in sun8icecipher_prepare():
1] If dmamapsg() 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 "theend_sgs" error path, call dma unmap only if the corresponding dma map was successful.
2] If the dmamapsingle() call for the IV fails, the device driver would try to free an invalid DMA memory address on the "theendiv" 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 checkunmap+0x123c/0x1b90 Modules linked in: skcipherexample(O+) CPU: 2 UID: 0 PID: 69 Comm: 1904000.crypto- Tainted: G O 6.15.0-rc3+ #24 PREEMPT Tainted: [O]=OOTMODULE Hardware name: OrangePi Zero2 (DT) pc : checkunmap+0x123c/0x1b90 lr : checkunmap+0x123c/0x1b90 ... Call trace: checkunmap+0x123c/0x1b90 (P) debugdmaunmappage+0xac/0xc0 dmaunmappageattrs+0x1f4/0x5fc sun8icecipherdoone+0x1bd4/0x1f40 cryptopumpwork+0x334/0x6e0 kthreadworkerfn+0x21c/0x438 kthread+0x374/0x664 retfrom_fork+0x10/0x20 ---[ end trace 0000000000000000 ]---
To fix this, check for !dmamappingerror() before calling dmaunmapsingle() on the "theend_iv" path.
[
{
"target": {
"function": "sun8i_ce_cipher_prepare",
"file": "drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@c62b79c1c51303dbcb6edfa4de0ee176f4934c52",
"deprecated": false,
"id": "CVE-2025-38300-1c25e081",
"signature_type": "Function",
"signature_version": "v1",
"digest": {
"function_hash": "181955475839861134229896447299422346172",
"length": 5012.0
}
},
{
"target": {
"file": "drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a0ac3f85b2e3ef529e852f252a70311f9029d5e6",
"deprecated": false,
"id": "CVE-2025-38300-1f030fc7",
"signature_type": "Line",
"signature_version": "v1",
"digest": {
"threshold": 0.9,
"line_hashes": [
"231210145892615901281931682030244194828",
"28215980707379960730385457264497914050",
"114873576883365855253727511510680031501",
"27692606438976401495019996677835581965",
"193722864041008353705490263944282355017",
"234306212163082046185608685857722614508",
"94184335692454625718600089858485960996",
"145105870522880802908151322076478671459",
"26602096547473670760230768470405759431"
]
}
},
{
"target": {
"file": "drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@19d267d9fad00d94ad8477899e38ed7c11f33fb6",
"deprecated": false,
"id": "CVE-2025-38300-4f8a3c66",
"signature_type": "Line",
"signature_version": "v1",
"digest": {
"threshold": 0.9,
"line_hashes": [
"231210145892615901281931682030244194828",
"28215980707379960730385457264497914050",
"114873576883365855253727511510680031501",
"27692606438976401495019996677835581965",
"193722864041008353705490263944282355017",
"234306212163082046185608685857722614508",
"94184335692454625718600089858485960996",
"145105870522880802908151322076478671459",
"26602096547473670760230768470405759431"
]
}
},
{
"target": {
"file": "drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@c62b79c1c51303dbcb6edfa4de0ee176f4934c52",
"deprecated": false,
"id": "CVE-2025-38300-b5df59f6",
"signature_type": "Line",
"signature_version": "v1",
"digest": {
"threshold": 0.9,
"line_hashes": [
"231210145892615901281931682030244194828",
"28215980707379960730385457264497914050",
"114873576883365855253727511510680031501",
"27692606438976401495019996677835581965",
"193722864041008353705490263944282355017",
"234306212163082046185608685857722614508",
"94184335692454625718600089858485960996",
"145105870522880802908151322076478671459",
"26602096547473670760230768470405759431"
]
}
},
{
"target": {
"function": "sun8i_ce_cipher_prepare",
"file": "drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@19d267d9fad00d94ad8477899e38ed7c11f33fb6",
"deprecated": false,
"id": "CVE-2025-38300-d2ff37dd",
"signature_type": "Function",
"signature_version": "v1",
"digest": {
"function_hash": "42270659739335650246931695777636245329",
"length": 5036.0
}
},
{
"target": {
"function": "sun8i_ce_cipher_prepare",
"file": "drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a0ac3f85b2e3ef529e852f252a70311f9029d5e6",
"deprecated": false,
"id": "CVE-2025-38300-ea348f42",
"signature_type": "Function",
"signature_version": "v1",
"digest": {
"function_hash": "102677993619411852022500241279103748414",
"length": 5005.0
}
}
]