CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 1CVE-2019-15791 – Reference count underflow in shiftfs
https://notcve.org/view.php?id=CVE-2019-15791
In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() installs an fd referencing a file from the lower filesystem without taking an additional reference to that file. After the btrfs ioctl completes this fd is closed, which then puts a reference to that file, leading to a refcount underflow. En shiftfs, un parche no upstream para el Kernel de Linux incluido en las series kernel de Ubuntu versiones 5.0 y 5.3, shiftfs_btrfs_ioctl_fd_replace() instala un fd que hace referencia a un archivo del sistema de archivos inferior sin tomar una referencia adicional a ese archivo. Después de que el btrfs ioctl completa este fd se cierra, lo que entonces pone una referencia a ese archivo, lo que lleva a un subflujo de recuento. • https://www.exploit-db.com/exploits/47693 https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=601a64857b3d7040ca15c39c929e6b9db3373ec1 https://usn.ubuntu.com/usn/usn-4183-1 https://usn.ubuntu.com/usn/usn-4184-1 • CWE-191: Integer Underflow (Wrap or Wraparound) CWE-672: Operation on a Resource after Expiration or Release •
CVSS: 7.2EPSS: 0%CPEs: 4EXPL: 1CVE-2019-15794 – Reference counting error in overlayfs/shiftfs error path when used in conjuction with aufs
https://notcve.org/view.php?id=CVE-2019-15794
Overlayfs in the Linux kernel and shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, both replace vma->vm_file in their mmap handlers. On error the original value is not restored, and the reference is put for the file to which vm_file points. On upstream kernels this is not an issue, as no callers dereference vm_file following after call_mmap() returns an error. However, the aufs patchs change mmap_region() to replace the fput() using a local variable with vma_fput(), which will fput() vm_file, leading to a refcount underflow. Overlayfs en el kernel de Linux y shiftfs, un parche no upstream para el kernel de Linux incluido en las series de kernel Ubuntu versiones 5.0 y 5.3, ambos reemplazan vma->vm_file en sus manejadores de mmap. • https://www.exploit-db.com/exploits/47692 https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=270d16ae48a4dbf1c7e25e94cc3e38b4bea37635 https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=ef81780548d20a786cc77ed4203fca146fd81ce3 https://usn.ubuntu.com/usn/usn-4208-1 https://usn.ubuntu.com/usn/usn-4209-1 • CWE-672: Operation on a Resource after Expiration or Release •
CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 0CVE-2019-18806
https://notcve.org/view.php?id=CVE-2019-18806
A memory leak in the ql_alloc_large_buffers() function in drivers/net/ethernet/qlogic/qla3xxx.c in the Linux kernel before 5.3.5 allows local users to cause a denial of service (memory consumption) by triggering pci_dma_mapping_error() failures, aka CID-1acb8f2a7a9f. Una pérdida de memoria en la función ql_alloc_large_buffers() en el archivo drivers/net/ethernet/qlogic/qla3xxx.c en el kernel de Linux versiones anteriores a 5.3.5, permite a usuarios locales causar una denegación de servicio (consumo de memoria) mediante la activación de fallos de la función pci_dma_mapping_error(), también se conoce como CID-1acb8f2a7a9f. • https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.5 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1acb8f2a7a9f10543868ddd737e37424d5c36cf4 • CWE-401: Missing Release of Memory after Effective Lifetime •
CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0CVE-2019-18807
https://notcve.org/view.php?id=CVE-2019-18807
Two memory leaks in the sja1105_static_config_upload() function in drivers/net/dsa/sja1105/sja1105_spi.c in the Linux kernel before 5.3.5 allow attackers to cause a denial of service (memory consumption) by triggering static_config_buf_prepare_for_upload() or sja1105_inhibit_tx() failures, aka CID-68501df92d11. Dos fugas de memoria en la función sja1105_static_config_upload() en el archivo drivers/net/dsa/sja1105/sja1105_spi.c en el kernel de Linux versiones anteriores a 5.3.5, permiten a atacantes causar una denegación de servicio (consumo de memoria) mediante la activación de fallos de la función static_config_buf_prepare_for_upload() o sja1105_inhibit_tx(), también se conoce como CID-68501df92d11. • https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.5 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=68501df92d116b760777a2cfda314789f926476f https://security.netapp.com/advisory/ntap-20191205-0001 • CWE-401: Missing Release of Memory after Effective Lifetime •
CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0CVE-2019-18808 – kernel: memory leak in ccp_run_sha_cmd() function in drivers/crypto/ccp/ccp-ops.c
https://notcve.org/view.php?id=CVE-2019-18808
A memory leak in the ccp_run_sha_cmd() function in drivers/crypto/ccp/ccp-ops.c in the Linux kernel through 5.3.9 allows attackers to cause a denial of service (memory consumption), aka CID-128c66429247. Una pérdida de memoria en la función ccp_run_sha_cmd() en el archivo drivers/crypto/ccp/ccp-ops.c en el kernel de Linux versiones hasta 5.3.9, permite a atacantes causar una denegación de servicio (consumo de memoria), también se conoce como CID-128c66429247. A flaw was found in the AMD Cryptographic Co-processor driver in the Linux kernel. An attacker, able to send invalid SHA type commands, could cause the system to crash. The highest threat from this vulnerability is to system availability. • http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html http://www.openwall.com/lists/oss-security/2021/09/14/1 https://github.com/torvalds/linux/commit/128c66429247add5128c03dc1e144ca56f05a4e2 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LYIFGYEDQXP5DVJQQUARQRK2PXKBKQGY https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YWWOOJKZ4NQYN4RMFIVJ3ZIXKJJI3MKP https://security.netapp.com/advisory/ntap-20191205-0001 https://usn.ubun • CWE-400: Uncontrolled Resource Consumption CWE-401: Missing Release of Memory after Effective Lifetime •