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home:dirkmueller:12.1
libqt4
libqt4-CVE-2013-0254.patch
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File libqt4-CVE-2013-0254.patch of Package libqt4
commit 57756e72adf2081137b97f0e689dd16c770d10b1 Author: Thiago Macieira <thiago.macieira@intel.com> Date: Sat Dec 22 08:32:12 2012 -0800 Change all shmget calls to user-only memory Drop the read and write permissions for group and other users in the system. Change-Id: I8fc753f09126651af3fb82df3049050f0b14e876 (cherry-picked from Qt 5 commit 856f209fb63ae336bfb389a12d2a75fa886dc1c5) Reviewed-by: Richard J. Moore <rich@kde.org> (cherry picked from commit 20b26bdb3dd5e46b01b9a7e1ce8342074df3c89c) diff --git a/src/corelib/kernel/qsharedmemory_unix.cpp b/src/corelib/kernel/qsharedmemory_unix.cpp index 004ff71..6b99d47 100644 --- a/src/corelib/kernel/qsharedmemory_unix.cpp +++ b/src/corelib/kernel/qsharedmemory_unix.cpp @@ -199,7 +199,7 @@ bool QSharedMemoryPrivate::create(int size) } // create - if (-1 == shmget(unix_key, size, 0666 | IPC_CREAT | IPC_EXCL)) { + if (-1 == shmget(unix_key, size, 0600 | IPC_CREAT | IPC_EXCL)) { QString function = QLatin1String("QSharedMemory::create"); switch (errno) { case EINVAL: @@ -220,7 +220,7 @@ bool QSharedMemoryPrivate::create(int size) bool QSharedMemoryPrivate::attach(QSharedMemory::AccessMode mode) { // grab the shared memory segment id - int id = shmget(unix_key, 0, (mode == QSharedMemory::ReadOnly ? 0444 : 0660)); + int id = shmget(unix_key, 0, (mode == QSharedMemory::ReadOnly ? 0400 : 0600)); if (-1 == id) { setErrorString(QLatin1String("QSharedMemory::attach (shmget)")); return false; @@ -265,7 +265,7 @@ bool QSharedMemoryPrivate::detach() size = 0; // Get the number of current attachments - int id = shmget(unix_key, 0, 0444); + int id = shmget(unix_key, 0, 0400); cleanHandle(); struct shmid_ds shmid_ds; diff --git a/src/corelib/kernel/qsystemsemaphore_unix.cpp b/src/corelib/kernel/qsystemsemaphore_unix.cpp index 579d60a..7324c96 100644 --- a/src/corelib/kernel/qsystemsemaphore_unix.cpp +++ b/src/corelib/kernel/qsystemsemaphore_unix.cpp @@ -143,10 +143,10 @@ key_t QSystemSemaphorePrivate::handle(QSystemSemaphore::AccessMode mode) } // Get semaphore - semaphore = semget(unix_key, 1, 0666 | IPC_CREAT | IPC_EXCL); + semaphore = semget(unix_key, 1, 0600 | IPC_CREAT | IPC_EXCL); if (-1 == semaphore) { if (errno == EEXIST) - semaphore = semget(unix_key, 1, 0666 | IPC_CREAT); + semaphore = semget(unix_key, 1, 0600 | IPC_CREAT); if (-1 == semaphore) { setErrorString(QLatin1String("QSystemSemaphore::handle")); cleanHandle(); diff --git a/src/gui/image/qnativeimage.cpp b/src/gui/image/qnativeimage.cpp index b78bc29..4b31f98 100644 --- a/src/gui/image/qnativeimage.cpp +++ b/src/gui/image/qnativeimage.cpp @@ -173,7 +173,7 @@ QNativeImage::QNativeImage(int width, int height, QImage::Format format,bool /* bool ok; xshminfo.shmid = shmget(IPC_PRIVATE, xshmimg->bytes_per_line * xshmimg->height, - IPC_CREAT | 0777); + IPC_CREAT | 0700); ok = xshminfo.shmid != -1; if (ok) { xshmimg->data = (char*)shmat(xshminfo.shmid, 0, 0); diff --git a/src/gui/image/qpixmap_x11.cpp b/src/gui/image/qpixmap_x11.cpp index fd38ac4..80bf18c 100644 --- a/src/gui/image/qpixmap_x11.cpp +++ b/src/gui/image/qpixmap_x11.cpp @@ -193,7 +193,7 @@ static bool qt_create_mitshm_buffer(const QPaintDevice* dev, int w, int h) bool ok; xshminfo.shmid = shmget(IPC_PRIVATE, xshmimg->bytes_per_line * xshmimg->height, - IPC_CREAT | 0777); + IPC_CREAT | 0700); ok = xshminfo.shmid != -1; if (ok) { xshmimg->data = (char*)shmat(xshminfo.shmid, 0, 0); --- a/tools/qvfb/qvfbshmem.cpp +++ b/tools/qvfb/qvfbshmem.cpp @@ -174,13 +174,13 @@ QShMemViewProtocol::QShMemViewProtocol(int displayid, const QSize &s, uint data_offset_value = sizeof(QVFbHeader); int dataSize = bpl * h + data_offset_value; - shmId = shmget(key, dataSize, IPC_CREAT | 0666); + shmId = shmget(key, dataSize, IPC_CREAT | 0600); if (shmId != -1) data = (unsigned char *)shmat(shmId, 0, 0); else { struct shmid_ds shm; shmctl(shmId, IPC_RMID, &shm); - shmId = shmget(key, dataSize, IPC_CREAT | 0666); + shmId = shmget(key, dataSize, IPC_CREAT | 0600); if (shmId == -1) { perror("QShMemViewProtocol::QShMemViewProtocol"); qFatal("Cannot get shared memory 0x%08x", key);
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