UBUNTU-CVE-2022-50159

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...

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

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-2022-50232 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-2022-50230

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-2022-50096 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...

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-2022-50062

CVE-2022-50062 affects the Linux kernel net/bgmac path. The issue is a BUG_ON triggered by a race where, if an RX interrupt occurs between setting ring->end and netdev_sent_queue(), bgmac_dma_tx_free() can miscalculate the queue size when called from bgmac_poll(), causing a kernel BUG at lib/d...

CVE-2022-50058 vdpa_sim_blk: set number of address spaces and virtqueue groups

In the Linux kernel, the following vulnerability has been resolved: vdpasimblk: set number of address spaces and virtqueue groups Commit bda324fd037a "vdpasim: control virtqueue support" added two new fields nas, ngroups to vdpasimdevattr, but we forgot to initialize them for vdpasimblk. When...

CVE-2022-50044

CVE-2022-50044 stems from a race in the Linux kernel’s net: qrtr MHI channel handling. After enabling, an MHI event/interrupt can occur either before dev_set_drvdata is completed (causing qrtr-ns to fail service enumeration) or after dev_set_drvdata but before qrtr_endpoint_register (potential ke...

CVE-2022-49960 drm/i915: fix null pointer dereference

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...