UBUNTU-CVE-2022-49997

In the Linux kernel, the following vulnerability has been resolved: net: lantiqxrx200: restore buffer if memory allocation failed In a situation where memory allocation fails, an invalid buffer address is stored. When this descriptor is used again, the system panics in the buildskb function when...

UBUNTU-CVE-2022-50232

In the Linux kernel, the following vulnerability has been resolved: arm64: set UXN on swapper page tables This issue was fixed upstream by accident in c3cee924bd85 "arm64: head: cover entire kernel image in initial ID map" as part of a large refactoring of the arm64 boot flow. This simple fix is...

UBUNTU-CVE-2022-49960

In the Linux kernel, the following vulnerability has been resolved: drm/i915: fix null pointer dereference Asus chromebook CX550 crashes during boot on v5.17-rc1 kernel. The root cause is null pointer defeference of binext in tglgetbwinfo in drivers/gpu/drm/i915/display/intelbw.c. BUG: kernel NUL...

UBUNTU-CVE-2022-50230

In the Linux kernel, the following vulnerability has been resolved: arm64: set UXN on swapper page tables This issue was fixed upstream by accident in c3cee924bd85 "arm64: head: cover entire kernel image in initial ID map" as part of a large refactoring of the arm64 boot flow. This simple fix is...

CVE-2022-50232 arm64: set UXN on swapper page tables

In the Linux kernel, the following vulnerability has been resolved: arm64: set UXN on swapper page tables This issue was fixed upstream by accident in c3cee924bd85 "arm64: head: cover entire kernel image in initial ID map" as part of a large refactoring of the arm64 boot flow. This simple fix is...

CVE-2022-50232

CVE-2022-50232 affects the Linux kernel on arm64 with FEAT_EPAN: UXN was not set on swapper PTEs, causing idmap_kpti_install_ng_mappings to panic when accessing __idmap_kpti_flag. Upstream fix sets UXN on swapper page tables; originated from a boot-flow refactor (commit c3cee924bd85) and a simple...

CVE-2022-50230

In the Linux kernel (arm64), the idmap access problem occurred on systems implementing FEAT_EPAN where UXN was not set on swapper page tables, causing idmap_kpti_install_ng_mappings to panic when accessing __idmap_kpti_flag. The issue was fixed upstream by applying UXN to the swapper PTEs as part...

CVE-2022-50195 ARM: dts: qcom: replace gcc PXO with pxo_board fixed clock

In the Linux kernel, the following vulnerability has been resolved: ARM: dts: qcom: replace gcc PXO with pxoboard fixed clock Replace gcc PXO phandle to pxoboard fixed clock declared in the dts. gcc driver doesn't provide PXOSRC as it's a fixed-clock. This cause a kernel panic if any driver...

CVE-2022-50195

The CVE-2022-50195 entry concerns the Linux kernel (ARM) where the device tree for Qualcomm clocks declared a fixed-clock pxo_board, replacing the gcc PXO phandle. The gcc driver does not provide PXO_SRC because it’s a fixed clock, which could lead to a kernel panic if a driver tries to use it. T...

CVE-2022-50174

The CVE-2022-50174 issue affects the Linux kernel net/hinic path when a hinic device is used as a bond slave and statistics are read from the master bond device. The root cause is in hinic_get_stats64(), which previously called down(&nic_dev->mgmt_lock) to protect a critical section, risking s...

CVE-2022-50174 net: hinic: avoid kernel hung in hinic_get_stats64()

In the Linux kernel, the following vulnerability has been resolved: net: hinic: avoid kernel hung in hinicgetstats64 When using hinic device as a bond slave device, and reading device stats of master bond device, the kernel may hung. The kernel panic calltrace as follows: Kernel panic - not...

CVE-2022-50159

CVE-2022-50159 concerns the Linux kernel: the function that restores ima-kexec-buffer may read outside the addressable RAM if the previous kernel’s buffer lies beyond the new kernel’s memory map, risking kernel panic when booting with mem=X. A fix was implemented to validate the returned PFN rang...

CVE-2022-50159 of: check previous kernel's ima-kexec-buffer against memory bounds

In the Linux kernel, the following vulnerability has been resolved: of: check previous kernel's ima-kexec-buffer against memory bounds Presently imagetkexecbuffer doesn't check if the previous kernel's ima-kexec-buffer lies outside the addressable memory range. This can result in a kernel panic i...

CVE-2022-50159 of: check previous kernel's ima-kexec-buffer against memory bounds

In the Linux kernel, the following vulnerability has been resolved: of: check previous kernel's ima-kexec-buffer against memory bounds Presently imagetkexecbuffer doesn't check if the previous kernel's ima-kexec-buffer lies outside the addressable memory range. This can result in a kernel panic i...

CVE-2022-50132

CVE-2022-50132 (Linux kernel) affects the usb: cdns3 gadget code. The root cause is an invalid dereference when ep is NULL due to the placement of the priv_ep assignment. The vulnerability is resolved by changing the assignment location in cdns3_gadget_ep_dequeue() and cdns3_gadget_ep_enable(), p...

CVE-2022-50132 usb: cdns3: change place of 'priv_ep' assignment in cdns3_gadget_ep_dequeue(), cdns3_gadget_ep_enable()

In the Linux kernel, the following vulnerability has been resolved: usb: cdns3: change place of 'privep' assignment in cdns3gadgetepdequeue, cdns3gadgetepenable If 'ep' is NULL, result of eptocdns3epep is invalid pointer and its dereference with privep-cdns3dev may cause panic. Found by Linux...

CVE-2022-50103 sched, cpuset: Fix dl_cpu_busy() panic due to empty cs->cpus_allowed

In the Linux kernel, the following vulnerability has been resolved: sched, cpuset: Fix dlcpubusy panic due to empty cs-cpusallowed With cgroup v2, the cpuset's cpusallowed mask can be empty indicating that the cpuset will just use the effective CPUs of its parent. So cpusetcanattach can call...

CVE-2022-50103

CVE-2022-50103: In the Linux kernel, sched/cpuset handling with cgroup v2 can lead to a panic when cpus_allowed is empty, causing dl_cpu_busy() to crash due to an out-of-bounds percpu access. The fix uses the effective_cpus mask instead of cpus_allowed, for both v1 (where they’re the same) and v2...

CVE-2022-50096 x86/kprobes: Update kcb status flag after singlestepping

In the Linux kernel, the following vulnerability has been resolved: x86/kprobes: Update kcb status flag after singlestepping Fix kprobes to update kcb kprobes control block status flag to KPROBEHITSSDONE even if the kp-posthandler is not set. This bug may cause a kernel panic if another INT3 user...

CVE-2022-50096

CVE-2022-50096 – Linux kernel (x86/kprobes) : The issue arises from kprobes not correctly updating the kcb status flag after single-stepping, which could cause a kernel panic if another INT3 user runs immediately after due to misinterpretation of INT3 as kprobe single-stepping. The connected docu...