From patchwork Tue Mar 4 12:19:09 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vijay Anusuri X-Patchwork-Id: 58272 X-Patchwork-Delegate: steve@sakoman.com Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id D8607C282D0 for ; Tue, 4 Mar 2025 12:20:04 +0000 (UTC) Received: from mail-pl1-f169.google.com (mail-pl1-f169.google.com [209.85.214.169]) by mx.groups.io with SMTP id smtpd.web11.20487.1741090797066748924 for ; Tue, 04 Mar 2025 04:19:57 -0800 Authentication-Results: mx.groups.io; dkim=pass header.i=@mvista.com header.s=google header.b=Xa0vGkaJ; spf=pass (domain: mvista.com, ip: 209.85.214.169, mailfrom: vanusuri@mvista.com) Received: by mail-pl1-f169.google.com with SMTP id d9443c01a7336-2238d965199so46712845ad.2 for ; Tue, 04 Mar 2025 04:19:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mvista.com; s=google; t=1741090796; x=1741695596; darn=lists.openembedded.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=yb0bvoeCQLTs2EUz/x3NnUH0cz8/31761VtrtAhvjzM=; b=Xa0vGkaJ/eqsx1/aDggnNjqqf2Sb4jLywaa4zkTJJvWGiGcp0yYIFP8zcAk1w2zzU8 0pyxf6gHBZ7NmxP3995gjMUKp88IksFfDGGX9A55le5bZCdVHxE6RAPkM6+/YvnRMUQ1 llEedHLc50EzU+Y/zJ/oZKPHCtT+H/XdIXGPM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1741090796; x=1741695596; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=yb0bvoeCQLTs2EUz/x3NnUH0cz8/31761VtrtAhvjzM=; b=IJ0fsIcZaUtihwf9C2OesJt2hCZ8bF4CRx+bKJrm0QEoA9I8pYQw0kIKe0B3X+8eCw rTLIhV52/RUxOfv+xgq6tKQCZ70Xcgte8VQcqQpbyLnBKavujYo3n0jo9Q60fzy/6Spu kVQCAs6uQm7q/1QHaCqkVVKQw0J5RahEyhum6gNTrUN9xhQDBhZJlKYFL5T5dZtGNR5x dnTJ4UrJ2jFswiSUG/alSvkbVzA5b2oFjos1aYKrgzZ2bDk6lfjr/7Med7azLjPeINxp HuQ/nZk/awKcUzwlZpnKwc0PpiwzBKgy2aH3g4SXx7fw3tX07swpXohyiixaxxyeJGMa vWdA== X-Gm-Message-State: AOJu0YznBy++/jOy7CYPX7X5QWoHeEJF7nmGB8+wAtb484sTCNEqgJYd CsgwjS/S0mG732Wxq/VYjiMpHgFrU4DZ9ReGbbuHqA2xacPAJhCtkTzT/QaaBT55lAt9HoQY0ji 9oRQ= X-Gm-Gg: ASbGncuhPm6L/QIDXxCMuLzZwKgfhKxen2KdzoGkNceLFwY95u1tl3CEpgPS8cdKErB rFvD6bUT0G6BXcp5EPge5JiQB8DxEb1sEf00H6ebPx9pL17rkou1jZ6fi6mZc4LHWijNmEdHNWZ 4rgcYREbHUz9BPcb7NeqirfmFeZgdLuWC/CWL4+6JjWUrTyYebr3s0gi60WjURz4oYecJkow1eq MsS0IfCcZ0bJzi92bz06fP707dyiimZzwZ1dDnssbzX3eK4wpostje1D1tUesX5PGnN9naA0i+c fXETJJbwGYbeRNLa5CoTkYyiKsG6i9G+YcLnOjBUsxrZXfC8VI1Mpw== X-Google-Smtp-Source: AGHT+IEgz61nTE+DHLVPvSyKMzf3S+JziQsYpsIOo/RBu1oqVab1bPQ/VVIaPR1LgYaVXY+mHB1sRQ== X-Received: by 2002:a05:6a21:150a:b0:1f3:3771:d3c with SMTP id adf61e73a8af0-1f337710ebemr7591568637.24.1741090795660; Tue, 04 Mar 2025 04:19:55 -0800 (PST) Received: from MVIN00020.mvista.com ([49.207.225.5]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-aee7de1a488sm9859550a12.27.2025.03.04.04.19.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Mar 2025 04:19:55 -0800 (PST) From: vanusuri@mvista.com To: openembedded-core@lists.openembedded.org Cc: Vijay Anusuri Subject: [OE-core][kirkstone][PATCH 05/14] xwayland: Fix CVE-2024-31083 Date: Tue, 4 Mar 2025 17:49:09 +0530 Message-Id: <20250304121918.147345-5-vanusuri@mvista.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250304121918.147345-1-vanusuri@mvista.com> References: <20250304121918.147345-1-vanusuri@mvista.com> MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Tue, 04 Mar 2025 12:20:04 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/212270 From: Vijay Anusuri The patches are copied from xserver-xorg recipe. CVE reported for both and patches apply on both. Upstream-Commit: https://gitlab.freedesktop.org/xorg/xserver/-/commit/bdca6c3d1f5057ee & https://gitlab.freedesktop.org/xorg/xserver/-/commit/337d8d48b618d4fc Signed-off-by: Vijay Anusuri --- .../xwayland/CVE-2024-31083-0001.patch | 118 ++++++++++++++++++ .../xwayland/CVE-2024-31083-0002.patch | 77 ++++++++++++ .../xwayland/xwayland_22.1.8.bb | 2 + 3 files changed, 197 insertions(+) create mode 100644 meta/recipes-graphics/xwayland/xwayland/CVE-2024-31083-0001.patch create mode 100644 meta/recipes-graphics/xwayland/xwayland/CVE-2024-31083-0002.patch diff --git a/meta/recipes-graphics/xwayland/xwayland/CVE-2024-31083-0001.patch b/meta/recipes-graphics/xwayland/xwayland/CVE-2024-31083-0001.patch new file mode 100644 index 0000000000..754e03961a --- /dev/null +++ b/meta/recipes-graphics/xwayland/xwayland/CVE-2024-31083-0001.patch @@ -0,0 +1,118 @@ +From bdca6c3d1f5057eeb31609b1280fc93237b00c77 Mon Sep 17 00:00:00 2001 +From: Peter Hutterer +Date: Tue, 30 Jan 2024 13:13:35 +1000 +Subject: [PATCH] render: fix refcounting of glyphs during ProcRenderAddGlyphs + +Previously, AllocateGlyph would return a new glyph with refcount=0 and a +re-used glyph would end up not changing the refcount at all. The +resulting glyph_new array would thus have multiple entries pointing to +the same non-refcounted glyphs. + +AddGlyph may free a glyph, resulting in a UAF when the same glyph +pointer is then later used. + +Fix this by returning a refcount of 1 for a new glyph and always +incrementing the refcount for a re-used glyph, followed by dropping that +refcount back down again when we're done with it. + +CVE-2024-31083, ZDI-CAN-22880 + +This vulnerability was discovered by: +Jan-Niklas Sohn working with Trend Micro Zero Day Initiative + +Part-of: + +CVE: CVE-2024-31083 + +Upstream-Status: Backport [https://gitlab.freedesktop.org/xorg/xserver/-/commit/bdca6c3d1f5057ee] + +Signed-off-by: Archana Polampalli +Signed-off-by: Vijay Anusuri +--- + render/glyph.c | 5 +++-- + render/glyphstr.h | 2 ++ + render/render.c | 15 +++++++++++---- + 3 files changed, 16 insertions(+), 6 deletions(-) + +diff --git a/render/glyph.c b/render/glyph.c +index f3ed9cf..d5fc5f3 100644 +--- a/render/glyph.c ++++ b/render/glyph.c +@@ -245,10 +245,11 @@ FreeGlyphPicture(GlyphPtr glyph) + } + } + +-static void ++void + FreeGlyph(GlyphPtr glyph, int format) + { + CheckDuplicates(&globalGlyphs[format], "FreeGlyph"); ++ BUG_RETURN(glyph->refcnt == 0); + if (--glyph->refcnt == 0) { + GlyphRefPtr gr; + int i; +@@ -354,7 +355,7 @@ AllocateGlyph(xGlyphInfo * gi, int fdepth) + glyph = (GlyphPtr) malloc(size); + if (!glyph) + return 0; +- glyph->refcnt = 0; ++ glyph->refcnt = 1; + glyph->size = size + sizeof(xGlyphInfo); + glyph->info = *gi; + dixInitPrivates(glyph, (char *) glyph + head_size, PRIVATE_GLYPH); +diff --git a/render/glyphstr.h b/render/glyphstr.h +index 2f51bd2..68f8c9e 100644 +--- a/render/glyphstr.h ++++ b/render/glyphstr.h +@@ -117,6 +117,8 @@ extern GlyphSetPtr AllocateGlyphSet(int fdepth, PictFormatPtr format); + extern int + FreeGlyphSet(void *value, XID gid); + ++void FreeGlyph(GlyphPtr glyph, int format); ++ + #define GLYPH_HAS_GLYPH_PICTURE_ACCESSOR 1 /* used for api compat */ + extern _X_EXPORT PicturePtr + GetGlyphPicture(GlyphPtr glyph, ScreenPtr pScreen); +diff --git a/render/render.c b/render/render.c +index 456f156..5bc2a20 100644 +--- a/render/render.c ++++ b/render/render.c +@@ -1076,6 +1076,7 @@ ProcRenderAddGlyphs(ClientPtr client) + + if (glyph_new->glyph && glyph_new->glyph != DeletedGlyph) { + glyph_new->found = TRUE; ++ ++glyph_new->glyph->refcnt; + } + else { + GlyphPtr glyph; +@@ -1168,8 +1169,10 @@ ProcRenderAddGlyphs(ClientPtr client) + err = BadAlloc; + goto bail; + } +- for (i = 0; i < nglyphs; i++) ++ for (i = 0; i < nglyphs; i++) { + AddGlyph(glyphSet, glyphs[i].glyph, glyphs[i].id); ++ FreeGlyph(glyphs[i].glyph, glyphSet->fdepth); ++ } + + if (glyphsBase != glyphsLocal) + free(glyphsBase); +@@ -1179,9 +1182,13 @@ ProcRenderAddGlyphs(ClientPtr client) + FreePicture((void *) pSrc, 0); + if (pSrcPix) + FreeScratchPixmapHeader(pSrcPix); +- for (i = 0; i < nglyphs; i++) +- if (glyphs[i].glyph && !glyphs[i].found) +- free(glyphs[i].glyph); ++ for (i = 0; i < nglyphs; i++) { ++ if (glyphs[i].glyph) { ++ --glyphs[i].glyph->refcnt; ++ if (!glyphs[i].found) ++ free(glyphs[i].glyph); ++ } ++ } + if (glyphsBase != glyphsLocal) + free(glyphsBase); + return err; +-- +2.40.0 diff --git a/meta/recipes-graphics/xwayland/xwayland/CVE-2024-31083-0002.patch b/meta/recipes-graphics/xwayland/xwayland/CVE-2024-31083-0002.patch new file mode 100644 index 0000000000..c597e9b575 --- /dev/null +++ b/meta/recipes-graphics/xwayland/xwayland/CVE-2024-31083-0002.patch @@ -0,0 +1,77 @@ +From 337d8d48b618d4fc0168a7b978be4c3447650b04 Mon Sep 17 00:00:00 2001 +From: Olivier Fourdan +Date: Fri, 5 Apr 2024 15:24:49 +0200 +Subject: [PATCH] render: Avoid possible double-free in ProcRenderAddGlyphs() + ProcRenderAddGlyphs() adds the glyph to the glyphset using AddGlyph() and + then frees it using FreeGlyph() to decrease the reference count, after + AddGlyph() has increased it. + +AddGlyph() however may chose to reuse an existing glyph if it's already +in the glyphSet, and free the glyph that was given, in which case the +caller function, ProcRenderAddGlyphs() will call FreeGlyph() on an +already freed glyph, as reported by ASan: + + READ of size 4 thread T0 + #0 in FreeGlyph xserver/render/glyph.c:252 + #1 in ProcRenderAddGlyphs xserver/render/render.c:1174 + #2 in Dispatch xserver/dix/dispatch.c:546 + #3 in dix_main xserver/dix/main.c:271 + #4 in main xserver/dix/stubmain.c:34 + #5 in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 + #6 in __libc_start_main_impl ../csu/libc-start.c:360 + #7 (/usr/bin/Xwayland+0x44fe4) + Address is located 0 bytes inside of 64-byte region + freed by thread T0 here: + #0 in __interceptor_free libsanitizer/asan/asan_malloc_linux.cpp:52 + #1 in _dixFreeObjectWithPrivates xserver/dix/privates.c:538 + #2 in AddGlyph xserver/render/glyph.c:295 + #3 in ProcRenderAddGlyphs xserver/render/render.c:1173 + #4 in Dispatch xserver/dix/dispatch.c:546 + #5 in dix_main xserver/dix/main.c:271 + #6 in main xserver/dix/stubmain.c:34 + #7 in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 + previously allocated by thread T0 here: + #0 in __interceptor_malloc libsanitizer/asan/asan_malloc_linux.cpp:69 + #1 in AllocateGlyph xserver/render/glyph.c:355 + #2 in ProcRenderAddGlyphs xserver/render/render.c:1085 + #3 in Dispatch xserver/dix/dispatch.c:546 + #4 in dix_main xserver/dix/main.c:271 + #5 in main xserver/dix/stubmain.c:34 + #6 in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 + SUMMARY: AddressSanitizer: heap-use-after-free xserver/render/glyph.c:252 in FreeGlyph + +To avoid that, make sure not to free the given glyph in AddGlyph(). + +v2: Simplify the test using the boolean returned from AddGlyph() (Michel) +v3: Simplify even more by not freeing the glyph in AddGlyph() (Peter) + +Fixes: bdca6c3d1 - render: fix refcounting of glyphs during ProcRenderAddGlyphs +Closes: https://gitlab.freedesktop.org/xorg/xserver/-/issues/1659 +Signed-off-by: Olivier Fourdan +Part-of: + +CVE: CVE-2024-31083 + +Upstream-Status: Backport [https://gitlab.freedesktop.org/xorg/xserver/-/commit/337d8d48b618d4fc] + +Signed-off-by: Archana Polampalli +Signed-off-by: Vijay Anusuri +--- + render/glyph.c | 2 -- + 1 file changed, 2 deletions(-) + +diff --git a/render/glyph.c b/render/glyph.c +index d5fc5f3..f5069d4 100644 +--- a/render/glyph.c ++++ b/render/glyph.c +@@ -291,8 +291,6 @@ AddGlyph(GlyphSetPtr glyphSet, GlyphPtr glyph, Glyph id) + gr = FindGlyphRef(&globalGlyphs[glyphSet->fdepth], signature, + TRUE, glyph->sha1); + if (gr->glyph && gr->glyph != DeletedGlyph && gr->glyph != glyph) { +- FreeGlyphPicture(glyph); +- dixFreeObjectWithPrivates(glyph, PRIVATE_GLYPH); + glyph = gr->glyph; + } + else if (gr->glyph != glyph) { +-- +2.40.0 diff --git a/meta/recipes-graphics/xwayland/xwayland_22.1.8.bb b/meta/recipes-graphics/xwayland/xwayland_22.1.8.bb index 5fa2402234..258a875697 100644 --- a/meta/recipes-graphics/xwayland/xwayland_22.1.8.bb +++ b/meta/recipes-graphics/xwayland/xwayland_22.1.8.bb @@ -26,6 +26,8 @@ SRC_URI = "https://www.x.org/archive/individual/xserver/xwayland-${PV}.tar.xz \ file://CVE-2024-21886-2.patch \ file://CVE-2024-31080.patch \ file://CVE-2024-31081.patch \ + file://CVE-2024-31083-0001.patch \ + file://CVE-2024-31083-0002.patch \ " SRC_URI[sha256sum] = "d11eeee73290b88ea8da42a7d9350dedfaba856ce4ae44e58c045ad9ecaa2f73"