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-2021-47338

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-2021-47304

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-2021-47287

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-2021-47297

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-2021-47293

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-2021-47291

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-2021-47301

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-2021-47309

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.