kexec-tools security, bug fix, and enhancement update

2.0.20-57.0.3 - Merge 8.4 extra patches for SB boot environment Orabug: 33512440 2.0.20-57.0.2 - Merge SRPM/ol8-u4 orabug patches into SRPM/ol8-u5 Orabug: 33471981 2.0.20-57.0.1 - makedumpfile: Add support for newer kernels up to v5.12 Orabug: 33250117 2.0.20-57 - kdumpctl: enable secure boot on...

Denial Of Service (DoS)

kexec-tools is vulnerable to denial of service. An attacker can crash the application when kdump generates the dmesg file with incorrect permissions...

kexec-tools: incorrect permissions on kdump dmesg file

A flaw was found in the permissions of a log file created by kexec-tools. This flaw allows a local unprivileged user to read this file and leak kernel internal information from a previous panic. The highest threat from this vulnerability is to confidentiality...

CVE-2021-38205

drivers/net/ethernet/xilinx/xilinxemaclite.c in the Linux kernel before 5.13.3 makes it easier for attackers to defeat an ASLR protection mechanism because it prints a kernel pointer i.e., the real IOMEM pointer...

CVE-2018-5953

A flaw was found in the Linux kernel where the swiotlbprintinfo function in lib/swiotlb.c allows local users to obtain some kernel address information by reading the kernel log dmesg. This address is not useful to commit a further attack...

CVE-2018-5995

An information-exposure flaw was found in the Linux kernel where the pcpuembedfirstchunk function in mm/percpu.c allows local users to obtain kernel-object address information by reading the kernel log dmesg. However, this address is not static and cannot be used to commit a further attack...

CVE-2018-7273

In the Linux kernel, through 4.15.4, the floppy driver reveals the addresses of kernel functions and global variables using printk calls within the function showfloppy in drivers/block/floppy.c. An attacker can read this information from dmesg and use the addresses to find the locations of kernel...

CVE-2018-5750

The acpismbushcadd function in drivers/acpi/sbshc.c in the Linux kernel, through 4.14.15, allows local users to obtain sensitive address information by reading dmesg data from an SBS HC printk call...

CVE-2018-14656

A missing address check in the callers of the showopcodes in the Linux kernel allows an attacker to dump the kernel memory at an arbitrary kernel address into the dmesg log...

CVE-2019-19039

btrfsfreeextent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12 calls btrfsprintleaf in a certain ENOENT case, which allows local users to obtain potentially sensitive information about register values via the dmesg program. NOTE: The BTRFS development team disputes this issues as no...

DEBIAN-CVE-2019-19039

btrfsfreeextent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12 calls btrfsprintleaf in a certain ENOENT case, which allows local users to obtain potentially sensitive information about register values via the dmesg program. NOTE: The BTRFS development team disputes this issues as no...

CVE-2019-19039

btrfsfreeextent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12 calls btrfsprintleaf in a certain ENOENT case, which allows local users to obtain potentially sensitive information about register values via the dmesg program. NOTE: The BTRFS development team disputes this issues as no...

CVE-2019-19039

btrfsfreeextent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12 calls btrfsprintleaf in a certain ENOENT case, which allows local users to obtain potentially sensitive information about register values via the dmesg program. NOTE: The BTRFS development team disputes this issues as no...

Design/Logic Flaw

DISPUTED btrfsfreeextent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12 calls btrfsprintleaf in a certain ENOENT case, which allows local users to obtain potentially sensitive information about register values via the dmesg program. NOTE: The BTRFS development team disputes this...

UBUNTU-CVE-2019-19039

btrfsfreeextent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12 calls btrfsprintleaf in a certain ENOENT case, which allows local users to obtain potentially sensitive information about register values via the dmesg program. NOTE: The BTRFS development team disputes this issues as no...

CVE-2019-19039

btrfsfreeextent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12 calls btrfsprintleaf in a certain ENOENT case, which allows local users to obtain potentially sensitive information about register values via the dmesg program. NOTE: The BTRFS development team disputes this issues as no...

CVE-2019-19039

CVE-2019-19039 is a Linux kernel vulnerability affecting btrfs: the function __btrfs_free_extent in fs/btrfs/extent-tree.c may trigger a path in btrfs_print_leaf during an ENOENT case, enabling a local attacker to obtain potentially sensitive information about register values via dmesg. The descr...

CVE-2019-19039

btrfsfreeextent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12 calls btrfsprintleaf in a certain ENOENT case, which allows local users to obtain potentially sensitive information about register values via the dmesg program. NOTE: The BTRFS development team disputes this issues as no...

CVE-2019-19039

btrfsfreeextent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12 calls btrfsprintleaf in a certain ENOENT case, which allows local users to obtain potentially sensitive information about register values via the dmesg program. NOTE: The BTRFS development team disputes this issues as no...

Linux kernel information disclosure vulnerability (CNVD-2019-42534)

The Linux kernel is a computer operating system kernel written in C and assembly language, compliant with the POSIX standard, and distributed under the GNU General Public License. An information disclosure vulnerability exists in Linux kernel 5.3.12 and earlier versions. The vulnerability stems...