From: Vijay Anusuri <vanus...@mvista.com> Upstream-Status: Backport from https://gitlab.freedesktop.org/xorg/xserver/-/commit/c1ff84be & https://gitlab.freedesktop.org/xorg/xserver/-/commit/b07192a8
Signed-off-by: Vijay Anusuri <vanus...@mvista.com> --- .../xserver-xorg/CVE-2025-26599-1.patch | 66 +++++++++ .../xserver-xorg/CVE-2025-26599-2.patch | 129 ++++++++++++++++++ .../xorg-xserver/xserver-xorg_21.1.8.bb | 2 + 3 files changed, 197 insertions(+) create mode 100644 meta/recipes-graphics/xorg-xserver/xserver-xorg/CVE-2025-26599-1.patch create mode 100644 meta/recipes-graphics/xorg-xserver/xserver-xorg/CVE-2025-26599-2.patch diff --git a/meta/recipes-graphics/xorg-xserver/xserver-xorg/CVE-2025-26599-1.patch b/meta/recipes-graphics/xorg-xserver/xserver-xorg/CVE-2025-26599-1.patch new file mode 100644 index 0000000000..60b68a0d9a --- /dev/null +++ b/meta/recipes-graphics/xorg-xserver/xserver-xorg/CVE-2025-26599-1.patch @@ -0,0 +1,66 @@ +From c1ff84bef2569b4ba4be59323cf575d1798ba9be Mon Sep 17 00:00:00 2001 +From: Olivier Fourdan <ofour...@redhat.com> +Date: Tue, 17 Dec 2024 15:19:45 +0100 +Subject: [PATCH] composite: Handle failure to redirect in compRedirectWindow() + +The function compCheckRedirect() may fail if it cannot allocate the +backing pixmap. + +In that case, compRedirectWindow() will return a BadAlloc error. + +However that failure code path will shortcut the validation of the +window tree marked just before, which leaves the validate data partly +initialized. + +That causes a use of uninitialized pointer later. + +The fix is to not shortcut the call to compHandleMarkedWindows() even in +the case of compCheckRedirect() returning an error. + +CVE-2025-26599, ZDI-CAN-25851 + +This vulnerability was discovered by: +Jan-Niklas Sohn working with Trend Micro Zero Day Initiative + +Signed-off-by: Olivier Fourdan <ofour...@redhat.com> +Acked-by: Peter Hutterer <peter.hutte...@who-t.net> +Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1828> + +Upstream-Status: Backport [https://gitlab.freedesktop.org/xorg/xserver/-/commit/c1ff84be] +CVE: CVE-2025-26599 +Signed-off-by: Vijay Anusuri <vanus...@mvista.com> +--- + composite/compalloc.c | 5 +++-- + 1 file changed, 3 insertions(+), 2 deletions(-) + +diff --git a/composite/compalloc.c b/composite/compalloc.c +index eaabf0d..0bbbc55 100644 +--- a/composite/compalloc.c ++++ b/composite/compalloc.c +@@ -140,6 +140,7 @@ compRedirectWindow(ClientPtr pClient, WindowPtr pWin, int update) + CompScreenPtr cs = GetCompScreen(pWin->drawable.pScreen); + WindowPtr pLayerWin; + Bool anyMarked = FALSE; ++ int status = Success; + + if (pWin == cs->pOverlayWin) { + return Success; +@@ -218,13 +219,13 @@ compRedirectWindow(ClientPtr pClient, WindowPtr pWin, int update) + + if (!compCheckRedirect(pWin)) { + FreeResource(ccw->id, RT_NONE); +- return BadAlloc; ++ status = BadAlloc; + } + + if (anyMarked) + compHandleMarkedWindows(pWin, pLayerWin); + +- return Success; ++ return status; + } + + void +-- +2.25.1 + diff --git a/meta/recipes-graphics/xorg-xserver/xserver-xorg/CVE-2025-26599-2.patch b/meta/recipes-graphics/xorg-xserver/xserver-xorg/CVE-2025-26599-2.patch new file mode 100644 index 0000000000..252b033261 --- /dev/null +++ b/meta/recipes-graphics/xorg-xserver/xserver-xorg/CVE-2025-26599-2.patch @@ -0,0 +1,129 @@ +From b07192a8bedb90b039dc0f70ae69daf047ff9598 Mon Sep 17 00:00:00 2001 +From: Olivier Fourdan <ofour...@redhat.com> +Date: Mon, 13 Jan 2025 16:09:43 +0100 +Subject: [PATCH] composite: initialize border clip even when pixmap alloc + fails + +If it fails to allocate the pixmap, the function compAllocPixmap() would +return early and leave the borderClip region uninitialized, which may +lead to the use of uninitialized value as reported by valgrind: + + Conditional jump or move depends on uninitialised value(s) + at 0x4F9B33: compClipNotify (compwindow.c:317) + by 0x484FC9: miComputeClips (mivaltree.c:476) + by 0x48559A: miValidateTree (mivaltree.c:679) + by 0x4F0685: MapWindow (window.c:2693) + by 0x4A344A: ProcMapWindow (dispatch.c:922) + by 0x4A25B5: Dispatch (dispatch.c:560) + by 0x4B082A: dix_main (main.c:282) + by 0x429233: main (stubmain.c:34) + Uninitialised value was created by a heap allocation + at 0x4841866: malloc (vg_replace_malloc.c:446) + by 0x4F47BC: compRedirectWindow (compalloc.c:171) + by 0x4FA8AD: compCreateWindow (compwindow.c:592) + by 0x4EBB89: CreateWindow (window.c:925) + by 0x4A2E6E: ProcCreateWindow (dispatch.c:768) + by 0x4A25B5: Dispatch (dispatch.c:560) + by 0x4B082A: dix_main (main.c:282) + by 0x429233: main (stubmain.c:34) + + Conditional jump or move depends on uninitialised value(s) + at 0x48EEDBC: pixman_region_translate (pixman-region.c:2233) + by 0x4F9255: RegionTranslate (regionstr.h:312) + by 0x4F9B7E: compClipNotify (compwindow.c:319) + by 0x484FC9: miComputeClips (mivaltree.c:476) + by 0x48559A: miValidateTree (mivaltree.c:679) + by 0x4F0685: MapWindow (window.c:2693) + by 0x4A344A: ProcMapWindow (dispatch.c:922) + by 0x4A25B5: Dispatch (dispatch.c:560) + by 0x4B082A: dix_main (main.c:282) + by 0x429233: main (stubmain.c:34) + Uninitialised value was created by a heap allocation + at 0x4841866: malloc (vg_replace_malloc.c:446) + by 0x4F47BC: compRedirectWindow (compalloc.c:171) + by 0x4FA8AD: compCreateWindow (compwindow.c:592) + by 0x4EBB89: CreateWindow (window.c:925) + by 0x4A2E6E: ProcCreateWindow (dispatch.c:768) + by 0x4A25B5: Dispatch (dispatch.c:560) + by 0x4B082A: dix_main (main.c:282) + by 0x429233: main (stubmain.c:34) + + Conditional jump or move depends on uninitialised value(s) + at 0x48EEE33: UnknownInlinedFun (pixman-region.c:2241) + by 0x48EEE33: pixman_region_translate (pixman-region.c:2225) + by 0x4F9255: RegionTranslate (regionstr.h:312) + by 0x4F9B7E: compClipNotify (compwindow.c:319) + by 0x484FC9: miComputeClips (mivaltree.c:476) + by 0x48559A: miValidateTree (mivaltree.c:679) + by 0x4F0685: MapWindow (window.c:2693) + by 0x4A344A: ProcMapWindow (dispatch.c:922) + by 0x4A25B5: Dispatch (dispatch.c:560) + by 0x4B082A: dix_main (main.c:282) + by 0x429233: main (stubmain.c:34) + Uninitialised value was created by a heap allocation + at 0x4841866: malloc (vg_replace_malloc.c:446) + by 0x4F47BC: compRedirectWindow (compalloc.c:171) + by 0x4FA8AD: compCreateWindow (compwindow.c:592) + by 0x4EBB89: CreateWindow (window.c:925) + by 0x4A2E6E: ProcCreateWindow (dispatch.c:768) + by 0x4A25B5: Dispatch (dispatch.c:560) + by 0x4B082A: dix_main (main.c:282) + by 0x429233: main (stubmain.c:34) + +Fix compAllocPixmap() to initialize the border clip even if the creation +of the backing pixmap has failed, to avoid depending later on +uninitialized border clip values. + +Related to CVE-2025-26599, ZDI-CAN-25851 + +Signed-off-by: Olivier Fourdan <ofour...@redhat.com> +Acked-by: Peter Hutterer <peter.hutte...@who-t.net> +Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1828> + +Upstream-Status: Backport [https://gitlab.freedesktop.org/xorg/xserver/-/commit/b07192a8] +CVE: CVE-2025-26599 +Signed-off-by: Vijay Anusuri <vanus...@mvista.com> +--- + composite/compalloc.c | 11 ++++++++--- + 1 file changed, 8 insertions(+), 3 deletions(-) + +diff --git a/composite/compalloc.c b/composite/compalloc.c +index 7cf7351e00..4a1243170d 100644 +--- a/composite/compalloc.c ++++ b/composite/compalloc.c +@@ -605,9 +605,12 @@ compAllocPixmap(WindowPtr pWin) + int h = pWin->drawable.height + (bw << 1); + PixmapPtr pPixmap = compNewPixmap(pWin, x, y, w, h); + CompWindowPtr cw = GetCompWindow(pWin); ++ Bool status; + +- if (!pPixmap) +- return FALSE; ++ if (!pPixmap) { ++ status = FALSE; ++ goto out; ++ } + if (cw->update == CompositeRedirectAutomatic) + pWin->redirectDraw = RedirectDrawAutomatic; + else +@@ -621,14 +624,16 @@ compAllocPixmap(WindowPtr pWin) + DamageRegister(&pWin->drawable, cw->damage); + cw->damageRegistered = TRUE; + } ++ status = TRUE; + ++out: + /* Make sure our borderClip is up to date */ + RegionUninit(&cw->borderClip); + RegionCopy(&cw->borderClip, &pWin->borderClip); + cw->borderClipX = pWin->drawable.x; + cw->borderClipY = pWin->drawable.y; + +- return TRUE; ++ return status; + } + + void +-- +GitLab + diff --git a/meta/recipes-graphics/xorg-xserver/xserver-xorg_21.1.8.bb b/meta/recipes-graphics/xorg-xserver/xserver-xorg_21.1.8.bb index 5b77dad16a..e50d7bfb9e 100644 --- a/meta/recipes-graphics/xorg-xserver/xserver-xorg_21.1.8.bb +++ b/meta/recipes-graphics/xorg-xserver/xserver-xorg_21.1.8.bb @@ -28,6 +28,8 @@ SRC_URI += "file://0001-xf86pciBus.c-use-Intel-ddx-only-for-pre-gen4-hardwar.pat file://CVE-2025-26596.patch \ file://CVE-2025-26597.patch \ file://CVE-2025-26598.patch \ + file://CVE-2025-26599-1.patch \ + file://CVE-2025-26599-2.patch \ " SRC_URI[sha256sum] = "38aadb735650c8024ee25211c190bf8aad844c5f59632761ab1ef4c4d5aeb152" -- 2.25.1
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