xen: insufficient TLB flushing / improper large page mappings with AMD IOMMUs

An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because TLB flushes do not always occur after IOMMU mapping changes.

php: NULL pointer dereference in ext/imap/php_imap.c resulting in a denial of service

ext/imap/php_imap.c in PHP 5.x and 7.x before 7.3.0 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty string in the message argument to the imap_mail function.

qt5-qtbase: QImage allocation failure in qgifhandler

An issue was discovered in Qt before 5.11.3. A malformed GIF image causes a NULL pointer dereference in QGifHandler resulting in a segmentation fault.

wawpack: Out-of-bounds read in WavpackVerifySingleBlock function leads to DoS

The function WavpackVerifySingleBlock in open_utils.c in libwavpack.a in WavPack through 5.1.0 allows attackers to cause a denial-of-service (out-of-bounds read and application crash) via a crafted WavPack Lossless Audio file, as demonstrated by wvunpack.

kernel: Use-after-free in sound/usb/card.c:usb_audio_probe()

In the Linux kernel through 4.19.6, a local user could exploit a use-after-free in the ALSA driver by supplying a malicious USB Sound device (with zero interfaces) that is mishandled in usb_audio_probe in sound/usb/card.c.

An open redirect was discovered in Symfony 2.7.x before 2.7.50, 2.8.x before 2.8.49, 3.x before 3.4.20, 4.0.x before 4.0.15, 4.1.x before 4.1.9 and 4.2.x before 4.2.1. By using backslashes in the `_failure_path` input field of login forms, an attacker can work around the redirection target restrictions and effectively redirect the user to any domain after login.

An issue was discovered in Symfony 2.7.x before 2.7.50, 2.8.x before 2.8.49, 3.x before 3.4.20, 4.0.x before 4.0.15, 4.1.x before 4.1.9, and 4.2.x before 4.2.1. When using the scalar type hint `string` in a setter method (e.g. `setName(string $name)`) of a class that's the `data_class` of a form, and when a file upload is submitted to the corresponding field instead of a normal text input, then `UploadedFile::__toString()` is called which will then return and disclose the path of the uploaded file. If combined with a local file inclusion issue in certain circumstances this could escalate it to a Remote Code Execution.

polkit: Improper handling of user with uid > INT_MAX leading to authentication bypass

A flaw was found in PolicyKit (aka polkit) 0.115 that allows a user with a uid greater than INT_MAX to successfully execute any systemctl command.

In Artifex MuPDF 1.14.0, there is an infinite loop in the function svg_dev_end_tile in fitz/svg-device.c, as demonstrated by mutool.

libsndfile: heap-based buffer over-read at wav.c in wav_write_header

There is a heap-based buffer over-read at wav.c in wav_write_header in libsndfile 1.0.28 that will cause a denial of service.

libsndfile: buffer over-read in the function i2alaw_array in alaw.c

An issue was discovered in libsndfile 1.0.28. There is a buffer over-read in the function i2alaw_array in alaw.c that will lead to a denial of service.

libsndfile: buffer over-read in the function i2ulaw_array in ulaw.c

An issue was discovered in libsndfile 1.0.28. There is a buffer over-read in the function i2ulaw_array in ulaw.c that will lead to a denial of service.

wireshark: ZigBee ZCL dissector crash

In Wireshark 2.6.0 to 2.6.4, the ZigBee ZCL dissector could crash. This was addressed in epan/dissectors/packet-zbee-zcl-lighting.c by preventing a divide-by-zero error.

wireshark: IxVeriWave parser crash

In Wireshark 2.6.0 to 2.6.4 and 2.4.0 to 2.4.10, the IxVeriWave file parser could crash. This was addressed in wiretap/vwr.c by adjusting a buffer boundary.

wireshark: DCOM dissector crash resulting in information leak

In Wireshark 2.6.0 to 2.6.4 and 2.4.0 to 2.4.10, the DCOM dissector could crash. This was addressed in epan/dissectors/packet-dcom.c by adding '\0' termination.

wireshark: Heap-based buffer over-read in the dissection engine

In Wireshark 2.6.0 to 2.6.4 and 2.4.0 to 2.4.10, the dissection engine could crash. This was addressed in epan/tvbuff_composite.c by preventing a heap-based buffer over-read.

wireshark: NULL pointer dereference resulting in a PVFS dissector crash

In Wireshark 2.6.0 to 2.6.4 and 2.4.0 to 2.4.10, the PVFS dissector could crash. This was addressed in epan/dissectors/packet-pvfs2.c by preventing a NULL pointer dereference.

wireshark: Heap buffer overflow in packet-lbmpdm.c:dissect_segment_ofstable() allows denial of service or possibly arbitrary code execution

In Wireshark 2.6.0 to 2.6.4 and 2.4.0 to 2.4.10, the LBMPDM dissector could crash. In addition, a remote attacker could write arbitrary data to any memory locations before the packet-scoped memory. This was addressed in epan/dissectors/packet-lbmpdm.c by disallowing certain negative values.

wireshark: Infinite loop in the MMSE dissector

In Wireshark 2.6.0 to 2.6.4 and 2.4.0 to 2.4.10, the MMSE dissector could go into an infinite loop. This was addressed in epan/dissectors/packet-mmse.c by preventing length overflows.

exiv2: heap-based buffer over-read in PngChunk::readRawProfile in pngchunk_int.cpp

In Exiv2 0.26 and previous versions, PngChunk::readRawProfile in pngchunk_int.cpp may cause a denial of service (application crash due to a heap-based buffer over-read) via a crafted PNG file.