Linux Kernel vulnerabilities
Published CVEs affecting Linux Kernel products: 5 record(s), with severity, exploitation and fixes.
CVE-2022-2503
Medium · 6.7
CWE-287 Aug 12, 2022
Linux Kernel LoadPin bypass via dm-verity table reload
Dm-verity is used for extending root-of-trust to root filesystems. LoadPin builds on this property to restrict module/firmware loads to just the trusted root filesystem. Device-mapper table reloads currently allow users with root privileges to switch out the target with an equivalent dm-linear target and bypass verification till reboot. This allows root to bypass LoadPin and can be used to load untrusted and unverified kernel modules and firmware, which implies arbitrary kernel execution and persistence for peripherals that do not verify firmware updates. We recommend upgrading past commit 4caae58406f8ceb741603eee460d79bacca9b1b5
CVE-2022-2327
High · 7.8
CWE-415 Jul 22, 2022
Use-after-free in io_uring ad work_flags in Linux Kernel
io_uring use work_flags to determine which identity need to grab from the calling process to make sure it is consistent with the calling process when executing IORING_OP. Some operations are missing some types, which can lead to incorrect reference counts which can then lead to a double free. We recommend upgrading the kernel past commit df3f3bb5059d20ef094d6b2f0256c4bf4127a859
CVE-2021-22600
High · 7.0
KEV High · 61 Public exploit CWE-415 Jan 26, 2022
Linux Kernel Privilege Escalation Vulnerability
A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755
CVE-2020-10781
Medium · 5.5
CWE-732 Sep 16, 2020
Incorrect Permission Assignment for Critical Resource in Linux Linux Kernel
A flaw was found in the Linux Kernel before 5.8-rc6 in the ZRAM kernel module, where a user with a local account and the ability to read the /sys/class/zram-control/hot_add file can create ZRAM device nodes in the /dev/ directory. This read allocates kernel memory and is not accounted for a user that triggers the creation of that ZRAM device. With this vulnerability, continually reading the device may consume a large amount of system memory and cause the Out-of-Memory (OOM) killer to activate and terminate random userspace processes, possibly making the system inoperable.
CVE-2020-14304
Medium · 4.4
CWE-460 Sep 15, 2020
A memory disclosure flaw was found in the Linux kernel's ethernet drivers, in the way it…
A memory disclosure flaw was found in the Linux kernel's ethernet drivers, in the way it read data from the EEPROM of the device. This flaw allows a local user to read uninitialized values from the kernel memory. The highest threat from this vulnerability is to confidentiality.