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Miller" , Stanimir Varbanov , Eneas U de Queiroz , Kuldeep Singh , Eric Biggers Cc: linux-crypto@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, brgl@kernel.org, Bartosz Golaszewski , stable@vger.kernel.org X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1432; i=bartosz.golaszewski@oss.qualcomm.com; h=from:subject:message-id; bh=LTozN6+KKvaV3pQEB1cO/FYh0GrmW0oAjoYOtzAUIa4=; b=owEBbQKS/ZANAwAKAQWdLsv/NoTDAcsmYgBqMsIYsWtxEfk+euw8cGJrHp2EQC94ItMatssu/ IqK9akWznqJAjMEAAEKAB0WIQSR5RMt5bVGHXuiZfwFnS7L/zaEwwUCajLCGAAKCRAFnS7L/zaE w5oAEACHmCVEXZ9uyMKUTXx4EkDSrqWoM2g6y2Bxl1/UFyoLNe3mXaMz4G+hgNxqxA5N7DeRTUy bu6V3BrB+WOp0ZKaJum0G3kBXSIOXGppXzrofVZjlElbRnDN4EXr+Dzb0hSchcK4CHuM/tBI+U4 s8lCUm/XPYqraK2Tma9KHFiFG6g2jMdxMoIyeNPqvO40ZX3YiTnrQu/RaxFWVMV3sIn+oEYisxa K6xUQIpFqTQdaC81Pds6buL/QqVaeV7FPeqwSWOQ6NOSs7Od9FuKaaN6RaMS+w9tY7hnIzW2YXn ujzlJZG9aCSNzSpiatPhf8vzi60fPB4p9t0aAdwI22bJiTkYBvMD5RE69EGpjFzAttqTS/0NtZP 6twHSnLLtCHLTFQWAS13SgfzdPfprTocTgD1n8pjcfJnt0zxldGQu6KBn9NREEdIAchUJEWY/UW 5+R9gbRREQpsyvkJLE1M5gYUjlkeeej2kigaAbmIXClb1E+xCZDQlnspgj/cn7vOOb7wonZjEvT kQ+ucPz8b4joq7Ljp0qjDIGZZj2MdqXlGMMsetztQd1IaossB2Hj6qqNrg4jtSi6hHWuif4gG4k sKfcJX78ks1qMf8UlDrVjagxEZKQxEZAMIVqyJEpIoZXyevt86aV1m+cKAegsECbtlgkMlfQMh9 y0B2pPL//1ahveg== X-Developer-Key: i=bartosz.golaszewski@oss.qualcomm.com; a=openpgp; fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772 X-Proofpoint-Spam-Info: AW1haW4tMjYwNjE3MDE1MSBTYWx0ZWRfX5mA5RXsJ5bAG EIgLCeBpRYEUXXV/w16nE2GEpqo+lYZG91W8+D4W1m4OYEWjHQyEKeXFXYL14yKBhhrca86+9el Ibbo7l7U7pkjh0Z+45W5r1d/gNR8hQg= X-Proofpoint-ORIG-GUID: cXK5Sb2BQ1b4X7nYIgTF4lu2A5tRPRl5 X-Authority-Analysis: v=2.4 cv=R6oz39RX c=1 sm=1 tr=0 ts=6a32c227 cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=ZpdpYltYx_vBUK5n70dp:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=kiYxeA6Iecqc4QeK3QQA:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 X-Proofpoint-GUID: cXK5Sb2BQ1b4X7nYIgTF4lu2A5tRPRl5 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjE3MDE1MSBTYWx0ZWRfX726CvolXlEBd uC+3rFqxrnHKzX34Q927iRaE/HtW8Zxmq7zDr1X/7iwG/jkv+Yl6HjJSjmk8+FIWthh0ivTEPwb 92akYK5xNTiDskSa/fIMyxnFBGAU5Wx7DdsuLj3BeDcRkcdPoTrd/SKt+1JuWvNwue8Y/wqxJsm gXjwX0ek3LmK1BNGPSg2Q7Thy7iGMEedRdQssk3DwVlgBNBGGWy7r+I8rmZr88wdwEFdr/a39Fk SRbK3wmJHB5Y7iFZvTO6dIJOX5XaYratNFaYKcgeovwWm2WLTsRhRQZLFmvH54G1AhHQNCTmcNq OYeEGnLO4o0NyjcDII8LuHvmWZHhPUoncg6CKwI3LRgZzO83fed/+/sm2OTpCsixJdyb+ANkbOb 5X3gO/CE8fEO1bvQPq+u8sRiIIwEG8S6GUngtrjL7+IwS3+3DWUvBInz0ehIkAcEfiXn8FiRoct FeI4U1B6GQaCKdzmQ9A== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-17_02,2026-06-17_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 bulkscore=0 clxscore=1015 impostorscore=0 phishscore=0 lowpriorityscore=0 suspectscore=0 priorityscore=1501 malwarescore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606170151 XTS is not defined for an empty plaintext: it requires at least one full block of data. The driver treated a zero-length request as a successful no-op, so the crypto self-tests "unexpectedly succeeded" when -EINVAL was expected. Return -EINVAL for empty XTS requests while keeping the no-op behavior for the other ciphers, which the crypto engine simply cannot process due to its DMA not supporting zero-length transfers. Cc: stable@vger.kernel.org Fixes: f08789462255 ("crypto: qce - Return error for zero length messages") Signed-off-by: Bartosz Golaszewski --- drivers/crypto/qce/skcipher.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/crypto/qce/skcipher.c b/drivers/crypto/qce/skcipher.c index 58a6c8e333784af73cd4340814046f04405c69e7..459c9ba6d0a5363da9f6ac8c69b6d3c1a4633f91 100644 --- a/drivers/crypto/qce/skcipher.c +++ b/drivers/crypto/qce/skcipher.c @@ -223,8 +223,12 @@ static int qce_skcipher_crypt(struct skcipher_request *req, int encrypt) keylen = IS_XTS(rctx->flags) ? ctx->enc_keylen >> 1 : ctx->enc_keylen; /* CE does not handle 0 length messages */ - if (!req->cryptlen) + if (!req->cryptlen) { + /* XTS requires at least one full block of data */ + if (IS_XTS(rctx->flags)) + return -EINVAL; return 0; + } /* * ECB and CBC algorithms require message lengths to be -- 2.47.3