CVE-2021-47454

In the Linux kernel, the following vulnerability has been resolved: powerpc/smp: do not decrement idle task preempt count in CPU offline With PREEMPTCOUNT=y, when a CPU is offlined and then onlined again, we get: BUG: scheduling while atomic: swapper/1/0/0x00000000 no locks held by swapper/1/0...

CVE-2021-47463

CVE-2021-47463 concerns a Linux kernel NULL pointer dereference in mm/secretmem during GUP operations. The issue arises from dereferencing page->mapping without ensuring it is non-NULL as a page mapping can be nulled while gup() runs (e.g., by reclaim or truncation). A fix was implemented to ...

CVE-2021-47454 powerpc/smp: do not decrement idle task preempt count in CPU offline

In the Linux kernel, the following vulnerability has been resolved: powerpc/smp: do not decrement idle task preempt count in CPU offline With PREEMPTCOUNT=y, when a CPU is offlined and then onlined again, we get: BUG: scheduling while atomic: swapper/1/0/0x00000000 no locks held by swapper/1/0...

CVE-2023-52796

In the Linux kernel, the following vulnerability has been resolved: ipvlan: add ipvlanroutev6outbound helper Inspired by syzbot reports using a stack of multiple ipvlan devices. Reduce stack size needed in ipvlanprocessv6outbound by moving the flowi6 struct used for the route lookup in an non...

CVE-2023-52839 drivers: perf: Do not broadcast to other cpus when starting a counter

In the Linux kernel, the following vulnerability has been resolved: drivers: perf: Do not broadcast to other cpus when starting a counter This command: $ perf record -e cycles:k -e instructions:k -c 10000 -m 64M dd if=/dev/zero of=/dev/null count=1000 gives rise to this kernel warning: 444.364395...

CVE-2023-52796 ipvlan: add ipvlan_route_v6_outbound() helper

In the Linux kernel, the following vulnerability has been resolved: ipvlan: add ipvlanroutev6outbound helper Inspired by syzbot reports using a stack of multiple ipvlan devices. Reduce stack size needed in ipvlanprocessv6outbound by moving the flowi6 struct used for the route lookup in an non...

CVE-2023-52780 net: mvneta: fix calls to page_pool_get_stats

In the Linux kernel, the following vulnerability has been resolved: net: mvneta: fix calls to pagepoolgetstats Calling pagepoolgetstats in the mvneta driver without checks leads to kernel crashes. First the page pool is only available if the bm is not used. The page pool is also not allocated whe...

CVE-2023-52761

The CVE-2023-52761 entry concerns a Linux kernel vulnerability on riscv where VMAP_STACK overflow detection was made thread-safe. The patch (commit 31da94c25aea) adds support for CONFIG_VMAP_STACK and optimizes overflow handling by directly using the per-cpu overflow_stack, removing the shadow_st...

CVE-2023-52745 IB/IPoIB: Fix legacy IPoIB due to wrong number of queues

In the Linux kernel, the following vulnerability has been resolved: IB/IPoIB: Fix legacy IPoIB due to wrong number of queues The cited commit creates child PKEY interfaces over netlink will multiple tx and rx queues, but some devices doesn't support more than 1 tx and 1 rx queues. This causes to ...

CVE-2021-47375

In the Linux kernel, the following vulnerability has been resolved: blktrace: Fix uaf in blktrace access after removing by sysfs There is an use-after-free problem triggered by following process: P1sda P2sdb echo 0 /sys/block/sdb/trace/enable blktraceremovequeue synchronizercu blktracefree...

CVE-2021-47337

In the Linux kernel, the following vulnerability has been resolved: scsi: core: Fix bad pointer dereference when ehandler kthread is invalid Commit 66a834d09293 "scsi: core: Fix error handling of scsihostalloc" changed the allocation logic to call putdevice to perform host cleanup with the...

CVE-2021-47428 powerpc/64s: fix program check interrupt emergency stack path

In the Linux kernel, the following vulnerability has been resolved: powerpc/64s: fix program check interrupt emergency stack path Emergency stack path was jumping into a 3: label inside the GENCOMMONBODY macro for the normal path after it had finished, rather than jumping over it. By a small...

CVE-2021-47271 usb: cdnsp: Fix deadlock issue in cdnsp_thread_irq_handler

In the Linux kernel, the following vulnerability has been resolved: usb: cdnsp: Fix deadlock issue in cdnspthreadirqhandler Patch fixes the following critical issue caused by deadlock which has been detected during testing NCM class: smp: csd: Detected non-responsive CSD lock 1 on CPU0 smp: csd:...

SUSE CVE-2024-35819

In the Linux kernel, the following vulnerability has been resolved: soc: fsl: qbman: Use raw spinlock for cgrlock smpcallfunction always runs its callback in hard IRQ context, even on PREEMPTRT, where spinlocks can sleep. So we need to use a raw spinlock for cgrlock to ensure we aren't waiting on...

CVE-2024-35920 media: mediatek: vcodec: adding lock to protect decoder context list

In the Linux kernel, the following vulnerability has been resolved: media: mediatek: vcodec: adding lock to protect decoder context list Add a lock for the ctxlist, to avoid accessing a NULL pointer within the 'vpudecipihandler' function when the ctxlist has been deleted due to an unexpected...

UBUNTU-CVE-2024-35806

In the Linux kernel, the following vulnerability has been resolved: soc: fsl: qbman: Always disable interrupts when taking cgrlock smpcallfunctionsingle disables IRQs when executing the callback. To prevent deadlocks, we must disable IRQs when taking cgrlock elsewhere. This is already done by...

CVE-2024-35819 soc: fsl: qbman: Use raw spinlock for cgr_lock

In the Linux kernel, the following vulnerability has been resolved: soc: fsl: qbman: Use raw spinlock for cgrlock smpcallfunction always runs its callback in hard IRQ context, even on PREEMPTRT, where spinlocks can sleep. So we need to use a raw spinlock for cgrlock to ensure we aren't waiting on...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from the fact that smpcallfunction always runs its callbacks in a hard IRQ context...

CVE-2022-48692

In the Linux kernel, the following vulnerability has been resolved: RDMA/srp: Set scmnd-result only when scmnd is not NULL This change fixes the following kernel NULL pointer dereference which is reproduced by blktests srp/007 occasionally. BUG: kernel NULL pointer dereference, address:...

CVE-2024-27062 nouveau: lock the client object tree.

In the Linux kernel, the following vulnerability has been resolved: nouveau: lock the client object tree. It appears the client object tree has no locking unless I've missed something else. Fix races around adding/removing client objects, mostly vram bar mappings. 4562.099306 general protection...