{"id":2232039,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2232039/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260502104436.2978678-1-jasonye247@163.com/","project":{"id":12,"url":"http://patchwork.ozlabs.org/api/1.1/projects/12/?format=json","name":"Linux CIFS Client","link_name":"linux-cifs-client","list_id":"linux-cifs.vger.kernel.org","list_email":"linux-cifs@vger.kernel.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260502104436.2978678-1-jasonye247@163.com>","date":"2026-05-02T10:44:36","name":"[v2,1/2] smb/client: fix out-of-bounds read in smb2_compound_op()","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"76dfc9c200e78a08413a4c5674b4805a126f3c72","submitter":{"id":93305,"url":"http://patchwork.ozlabs.org/api/1.1/people/93305/?format=json","name":null,"email":"jasonye247@163.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260502104436.2978678-1-jasonye247@163.com/mbox/","series":[{"id":502521,"url":"http://patchwork.ozlabs.org/api/1.1/series/502521/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-cifs-client/list/?series=502521","date":"2026-05-02T09:54:33","name":"smb/client: fix out-of-bounds read","version":2,"mbox":"http://patchwork.ozlabs.org/series/502521/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2232039/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2232039/checks/","tags":{},"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-cifs@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=163.com header.i=@163.com header.a=rsa-sha256\n header.s=s110527 header.b=iIe7drEe;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c09:e001:a7::12fc:5321; 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If iov_len is smaller than size[0],\nmemcpy can read beyond the end of the rsp_iov allocation and leak adjacent\nkernel heap memory.\n\nLink: https://lore.kernel.org/linux-cifs/d998240c-aca9-420d-9dbd-f5ba24af19e0@chenxiaosong.com/\nFixes: ea41367b2a60 (\"smb: client: introduce SMB2_OP_QUERY_WSL_EA\")\nCc: Stable@vger.kernel.org\nSigned-off-by: Zisen Ye \nReviewed-by: ChenXiaoSong \n---\n fs/smb/client/smb2inode.c | 3 +++\n 1 file changed, 3 insertions(+)","diff":"diff --git a/fs/smb/client/smb2inode.c b/fs/smb/client/smb2inode.c\nindex 286912616c73..a192d70cd29e 100644\n--- a/fs/smb/client/smb2inode.c\n+++ b/fs/smb/client/smb2inode.c\n@@ -121,6 +121,9 @@ static int check_wsl_eas(struct kvec *rsp_iov)\n \tea = (void *)((u8 *)rsp_iov->iov_base +\n \t\t le16_to_cpu(rsp->OutputBufferOffset));\n \tend = (u8 *)rsp_iov->iov_base + rsp_iov->iov_len;\n+\tif (ea + outlen > end)\n+\t\treturn -EINVAL;\n+\n \tfor (;;) {\n \t\tif ((u8 *)ea > end - sizeof(*ea))\n \t\t\treturn -EINVAL;\n","prefixes":["v2","1/2"]}