CVE-2022-49789

The CVE-2022-49789 entry documents a Linux kernel issue in the SCSI zfcp path: double free of an FSF request due to caching the FSF request ID in a signed 32-bit int, causing truncation and sign-extension when converting to 64-bit, leading to mismatches in the internal hash table and a stale poin...

CVE-2022-49787

Summary (CVE-2022-49787): In the Linux kernel, the mmc: sdhci-pci fix prevents a memory leak by ensuring proper PCI device reference counting. The root cause is that pci_get_device() increases the pci_dev reference count and may not be balanced with pci_dev_put() before amd_probe() returns; the f...

CVE-2022-49787 mmc: sdhci-pci: Fix possible memory leak caused by missing pci_dev_put()

In the Linux kernel, the following vulnerability has been resolved: mmc: sdhci-pci: Fix possible memory leak caused by missing pcidevput pcigetdevice will increase the reference count for the returned pcidev. We need to use pcidevput to decrease the reference count before amdprobe returns. There ...

CVE-2022-49785

The CVE-2022-49785 entry concerns the Linux kernel SGX subsystem. The issue arises in sgx_validate_offset_length(), which verifies userspace-provided offset and length but lacked an overflow check on their addition. The documented fix adds an overflow check to prevent arithmetic overflow when com...

CVE-2022-49785

In the Linux kernel, the following vulnerability has been resolved: x86/sgx: Add overflow check in sgxvalidateoffsetlength sgxvalidateoffsetlength function verifies "offset" and "length" arguments provided by userspace, but was missing an overflow check on their addition. Add it...

CVE-2022-49784

CVE-2022-49784 affects the Linux kernel perf/x86/amd/uncore subsystem. The issue is a memory leak where the events array in per-CPU NB/LLC uncore contexts is freed late, after the uncore context is freed when a CPU comes online. The documented fix is to free the events array before freeing the un...

CVE-2022-49783

CVE-2022-49783 — In the Linux kernel, the issue arises when fpu_inherit_perms() is invoked under fpregs_lock() in PREEMPT_RT builds, causing a sleeping function to be called from an atomic context due to spin_lock_irq() usage. The root cause is that fpu_state_size_dynamic() can return true even t...

CVE-2022-49784 perf/x86/amd/uncore: Fix memory leak for events array

In the Linux kernel, the following vulnerability has been resolved: perf/x86/amd/uncore: Fix memory leak for events array When a CPU comes online, the per-CPU NB and LLC uncore contexts are freed but not the events array within the context structure. This causes a memory leak as identified by the...

CVE-2022-49782 perf: Improve missing SIGTRAP checking

In the Linux kernel, the following vulnerability has been resolved: perf: Improve missing SIGTRAP checking To catch missing SIGTRAP we employ a WARN in perfeventoverflow, which fires if pendingsigtrap was already set: returning to user space without consuming pendingsigtrap, and then having the...

CVE-2022-49781 perf/x86/amd: Fix crash due to race between amd_pmu_enable_all, perf NMI and throttling

In the Linux kernel, the following vulnerability has been resolved: perf/x86/amd: Fix crash due to race between amdpmuenableall, perf NMI and throttling amdpmuenableall does: if !testbitidx, cpuc-activemask continue; amdpmuenableeventcpuc-eventsidx; A perf NMI of another event can come between...

CVE-2022-49781

CVE-2022-49781 corresponds to a Linux kernel vulnerability in perf/x86/amd where a race between amd_pmu_enable_all and perf NMI/throttling could lead to a NULL event dereference and kernel crash. The issue arises when perf NMI disables/enables all events while amd_pmu_enable_all is in progress, p...

CVE-2022-49779 kprobes: Skip clearing aggrprobe's post_handler in kprobe-on-ftrace case

In the Linux kernel, the following vulnerability has been resolved: kprobes: Skip clearing aggrprobe's posthandler in kprobe-on-ftrace case In unregisterkprobetop, if the currently unregistered probe has posthandler but other child probes of the aggrprobe do not have posthandler, the posthandler ...

CVE-2022-49779

CVE-2022-49779 affects the Linux kernel kprobes subsystem, specifically the kprobe-on-ftrace path. Description: when unregistering an aggrprobe, if the currently unregistered probe has a post_handler but sibling probes do not, the aggrprobe’s post_handler may be cleared. If the probe is ftrace-ba...

CVE-2022-49777 Input: i8042 - fix leaking of platform device on module removal

In the Linux kernel, the following vulnerability has been resolved: Input: i8042 - fix leaking of platform device on module removal Avoid resetting the module-wide i8042platformdevice pointer in i8042probe or i8042remove, so that the device can be properly destroyed by i8042exit on module unload...

CVE-2022-49778 arm64/mm: fix incorrect file_map_count for non-leaf pmd/pud

In the Linux kernel, the following vulnerability has been resolved: arm64/mm: fix incorrect filemapcount for non-leaf pmd/pud The page table check trigger BUGON unexpectedly when collapse hugepage: ------------ cut here ------------ kernel BUG at mm/pagetablecheck.c:82! Internal error: Oops - BUG...

CVE-2022-49776 macvlan: enforce a consistent minimal mtu

In the Linux kernel, the following vulnerability has been resolved: macvlan: enforce a consistent minimal mtu macvlan should enforce a minimal mtu of 68, even at link creation. This patch avoids the current behavior which could lead to crashes in ipv6 stack if the link is brought up $ ip link add...

CVE-2022-49776

CVE-2022-49776 affects the Linux kernel macvlan code; it fixes a low-level issue by enforcing a minimal MTU of 68 at link creation to prevent crashes in the IPv6 stack. The advisory notes that macvlan0 should reject mtu values below the device minimum (e.g., 67 rejected, 68 accepted), with the fi...

CVE-2022-49776 macvlan: enforce a consistent minimal mtu

In the Linux kernel, the following vulnerability has been resolved: macvlan: enforce a consistent minimal mtu macvlan should enforce a minimal mtu of 68, even at link creation. This patch avoids the current behavior which could lead to crashes in ipv6 stack if the link is brought up $ ip link add...

CVE-2022-49774

CVE-2022-49774 affects the Linux kernel (KVM: x86/xen) and concerns eventfd error handling in kvm_xen_eventfd_assign(). The root cause was calling eventfd_ctx_put() on error; a patch introduces a new goto target to handle the error instead. The documents confirm the fix has been applied and refer...

CVE-2022-49775

CVE-2022-49775 (Linux kernel) affects the tcp_cdg congestion control. The advisory notes that when MPTCP calls tcp_disconnect() on an already-disconnected flow under CDG, it may trigger a double-free in the SLAB allocator. The vulnerability arises from the ability to call tcp_cdg_release() multip...