CVE-2021-0920

In unix_scm_to_skb of af_unix.c, there is a possible use after free bug due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-196926917R...

CVE-2021-4154

A use-after-free flaw was found in cgroup1_parse_param in kernel/cgroup/cgroup-v1.c in the Linux kernel's cgroup v1 parser. A local attacker with a user privilege could cause a privilege escalation by exploiting the fsconfig syscall parameter leading to a container breakout and a denial of service ...

CVE-2021-3653

A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the "int_ctl" field, this issue could allow a malicio...

CVE-2021-3655

A vulnerability was found in the Linux kernel in versions prior to v5.14-rc1. Missing size validations on inbound SCTP packets may allow the kernel to read uninitialized memory.

CVE-2021-3679

A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service...

CVE-2021-3656

A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the "virt_ext" field, this issue could allow a malici...

CVE-2021-3743

An out-of-bounds (OOB) memory read flaw was found in the Qualcomm IPC router protocol in the Linux kernel. A missing sanity check allows a local attacker to gain access to out-of-bounds memory, leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerab...

CVE-2021-3732

A flaw was found in the Linux kernel's OverlayFS subsystem in the way the user mounts the TmpFS filesystem with OverlayFS. This flaw allows a local user to gain access to hidden files that should not be accessible.

CVE-2021-47289

In the Linux kernel, the following vulnerability has been resolved: ACPI: fix NULL pointer dereference Commit 71f642833284 ("ACPI: utils: Fix reference counting infor_each_acpi_dev_match()") started doing "acpi_dev_put()" on a pointerthat was possibly NULL. That fails miserably, because that helper...

CVE-2021-47310

In the Linux kernel, the following vulnerability has been resolved: net: ti: fix UAF in tlan_remove_one priv is netdev private data and it cannot beused after free_netdev() call. Using priv after free_netdev()can cause UAF bug. Fix it by moving free_netdev() at the end of thefunction.

CVE-2021-47311

In the Linux kernel, the following vulnerability has been resolved: net: qcom/emac: fix UAF in emac_remove adpt is netdev private data and it cannot beused after free_netdev() call. Using adpt after free_netdev()can cause UAF bug. Fix it by moving free_netdev() at the end of thefunction.

CVE-2021-47304

In the Linux kernel, the following vulnerability has been resolved: tcp: fix tcp_init_transfer() to not reset icsk_ca_initialized This commit fixes a bug (found by syzkaller) that could cause spuriousdouble-initializations for congestion control modules, which could causememory leaks or other probl...

CVE-2021-47338

In the Linux kernel, the following vulnerability has been resolved: fbmem: Do not delete the mode that is still in use The execution of fb_delete_videomode() is not based on the result of theprevious fbcon_mode_deleted(). As a result, the mode is directly deleted,regardless of whether it is still i...

CVE-2021-47287

In the Linux kernel, the following vulnerability has been resolved: driver core: auxiliary bus: Fix memory leak when driver_register() fail If driver_register() returns with error we need to free the memoryallocated for auxdrv->driver.name before returning from__auxiliary_driver_register()

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 scsi_host_alloc()")changed the allocation logic to call put_device() to perform host cleanupwith the a...

CVE-2021-47288

In the Linux kernel, the following vulnerability has been resolved: media: ngene: Fix out-of-bounds bug in ngene_command_config_free_buf() Fix an 11-year old bug in ngene_command_config_free_buf() whileaddressing the following warnings caught with -Warray-bounds: arch/alpha/include/asm/string.h:22:...

CVE-2021-47293

In the Linux kernel, the following vulnerability has been resolved: net/sched: act_skbmod: Skip non-Ethernet packets Currently tcf_skbmod_act() assumes that packets use Ethernet as their L2protocol, which is not always the case. As an example, for CAN devices: $ ip link add dev vcan0 type vcan $ ip...

CVE-2021-47301

In the Linux kernel, the following vulnerability has been resolved: igb: Fix use-after-free error during reset Cleans the next descriptor to watch (next_to_watch) when cleaning theTX ring. Failure to do so can cause invalid memory accesses. If igb_poll() runswhile the controller is reset this can l...

CVE-2021-47297

In the Linux kernel, the following vulnerability has been resolved: net: fix uninit-value in caif_seqpkt_sendmsg When nr_segs equal to zero in iovec_from_user, the objectmsg->msg_iter.iov is uninit stack memory in caif_seqpkt_sendmsgwhich is defined in ___sys_sendmsg. So we cann't just judgemsg-...

CVE-2021-47291

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix another slab-out-of-bounds in fib6_nh_flush_exceptions While running the self-tests on a KASAN enabled kernel, I observed aslab-out-of-bounds splat very similar to the one reported incommit 821bbf79fe46 ("ipv6: Fix KASAN:...

CVE-2021-47309

In the Linux kernel, the following vulnerability has been resolved: net: validate lwtstate->data before returning from skb_tunnel_info() skb_tunnel_info() returns pointer of lwtstate->data as ip_tunnel_infotype without validation. lwtstate->data can have various types such asmpls_iptunnel_...

CVE-2021-47295

In the Linux kernel, the following vulnerability has been resolved: net: sched: fix memory leak in tcindex_partial_destroy_work Syzbot reported memory leak in tcindex_set_parms(). The problem was innon-freed perfect hash in tcindex_partial_destroy_work(). In tcindex_set_parms() new tcindex_data is ...

CVE-2021-47302

In the Linux kernel, the following vulnerability has been resolved: igc: Fix use-after-free error during reset Cleans the next descriptor to watch (next_to_watch) when cleaning theTX ring. Failure to do so can cause invalid memory accesses. If igc_poll() runswhile the controller is being reset this...

CVE-2021-47305

In the Linux kernel, the following vulnerability has been resolved: dma-buf/sync_file: Don't leak fences on merge failure Each add_fence() call does a dma_fence_get() on the relevant fence. Inthe error path, we weren't calling dma_fence_put() so all those fencesgot leaked. Also, in the krealloc_arr...

CVE-2021-47303

In the Linux kernel, the following vulnerability has been resolved: bpf: Track subprog poke descriptors correctly and fix use-after-free Subprograms are calling map_poke_track(), but on program release there is nohook to call map_poke_untrack(). However, on program release, the aux memory(and poke ...

CVE-2021-47294

In the Linux kernel, the following vulnerability has been resolved: netrom: Decrease sock refcount when sock timers expire Commit 63346650c1a9 ("netrom: switch to sock timer API") switched to usesock timer API. It replaces mod_timer() by sk_reset_timer(), anddel_timer() by sk_stop_timer(). Function...

CVE-2021-47300

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix tail_call_reachable rejection for interpreter when jit failed During testing of f263a81451c1 ("bpf: Track subprog poke descriptors correctlyand fix use-after-free") under various failure conditions, for example, whenjit_su...

CVE-2021-47296

In the Linux kernel, the following vulnerability has been resolved: KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak vcpu_put is not called if the user copy fails. This can result in preemptnotifier corruption and crashes, among other issues.

CVE-2021-47290

In the Linux kernel, the following vulnerability has been resolved: scsi: target: Fix NULL dereference on XCOPY completion CPU affinity control added with commit 39ae3edda325 ("scsi: target: core:Make completion affinity configurable") makes target_complete_cmd() queuework on a CPU based on se_tpg-...

CVE-2021-47306

In the Linux kernel, the following vulnerability has been resolved: net: fddi: fix UAF in fza_probe fp is netdev private data and it cannot beused after free_netdev() call. Using fp after free_netdev()can cause UAF bug. Fix it by moving free_netdev() after error message. TURBOchannel adapter")

CVE-2021-47299

In the Linux kernel, the following vulnerability has been resolved: xdp, net: Fix use-after-free in bpf_xdp_link_release The problem occurs between dev_get_by_index() and dev_xdp_attach_link().At this point, dev_xdp_uninstall() is called. Then xdp link will not bedetached automatically when dev is ...

CVE-2021-47341

In the Linux kernel, the following vulnerability has been resolved: KVM: mmio: Fix use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio BUG: KASAN: use-after-free in kvm_vm_ioctl_unregister_coalesced_mmio+0x7c/0x1ec arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:183Read of size 8 at add...

CVE-2021-47286

In the Linux kernel, the following vulnerability has been resolved: bus: mhi: core: Validate channel ID when processing command completions MHI reads the channel ID from the event ring element sent by thedevice which can be any value between 0 and 255. In order toprevent any out of bound accesses, ...

CVE-2021-47292

In the Linux kernel, the following vulnerability has been resolved: io_uring: fix memleak in io_init_wq_offload() I got memory leak report when doing fuzz test: BUG: memory leakunreferenced object 0xffff888107310a80 (size 96):comm "syz-executor.6", pid 4610, jiffies 4295140240 (age 20.135s)hex dump...

CVE-2021-47298

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix potential memory leak on unlikely error case If skb_linearize is needed and fails we could leak a msg on the errorhandling. To fix ensure we kfree the msg block before returning error.Found during code review.