{"id":2224130,"url":"http://patchwork.ozlabs.org/api/covers/2224130/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/cover/20260416200702.2374709-1-git@aaronesau.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260416200702.2374709-1-git@aaronesau.com>","list_archive_url":null,"date":"2026-04-16T20:07:00","name":"[0/2] hw/cxl: Fix two OOB access bugs in CXL mailbox commands","submitter":{"id":93010,"url":"http://patchwork.ozlabs.org/api/people/93010/?format=json","name":"Aaron Esau","email":"aaron1esau@gmail.com"},"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/cover/20260416200702.2374709-1-git@aaronesau.com/mbox/","series":[{"id":500210,"url":"http://patchwork.ozlabs.org/api/series/500210/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=500210","date":"2026-04-16T20:07:00","name":"hw/cxl: Fix two OOB access bugs in CXL mailbox commands","version":1,"mbox":"http://patchwork.ozlabs.org/series/500210/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/covers/2224130/comments/","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=NAL6Y2iX;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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helo=mail-ot1-x32a.google.com","X-Spam_score_int":"-20","X-Spam_score":"-2.1","X-Spam_bar":"--","X-Spam_report":"(-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n SPF_PASS=-0.001 autolearn=ham autolearn_force=no","X-Spam_action":"no action","X-Mailman-Approved-At":"Thu, 16 Apr 2026 18:38:01 -0400","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"qemu development ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"Two fixes for CXL Type-3 device emulation in hw/cxl/cxl-mailbox-utils.c:\n\nPatch 1: cmd_logs_get_log() performs pointer arithmetic on a struct\narray using a byte offset, reading past the end of cel_log. Fix the\nmemmove to use byte-based pointer arithmetic (cast to uint8_t *).\n\nPatch 2: cmd_features_set_feature() is missing bounds checks on six\nSet Feature handlers (soft_ppr, hard_ppr, cacheline_sparing,\nrow_sparing, bank_sparing, rank_sparing). A guest-controlled offset\nand payload length can overflow the small write-attribute structs\ninto adjacent CXLType3Dev fields. Add the same bounds check already\npresent in the patrol_scrub and ecs cases.\n\nAaron Esau (2):\n hw/cxl: fix OOB read in Get Log command due to incorrect pointer\n arithmetic\n hw/cxl: add missing bounds checks in Set Feature for PPR and sparing\n\n hw/cxl/cxl-mailbox-utils.c | 33 ++++++++++++++++++++++++++++++++-\n 1 file changed, 32 insertions(+), 1 deletion(-)"}