Linux Kernel Security Vulnerabilities

CVE-2021-47147

In the Linux kernel, the following vulnerability has been resolved: ptp: ocp: Fix a resource leak in an error handling path If an error occurs after a successful 'pci_ioremap_bar()' call, it must beundone by a corresponding 'pci_iounmap()' call, as already done in theremove function.

CVE-2021-47148

In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: fix a buffer overflow in otx2_set_rxfh_context() This function is called from ethtool_set_rxfh() and "*rss_context"comes from the user. Add some bounds checking to prevent memorycorruption.

CVE-2021-47149

In the Linux kernel, the following vulnerability has been resolved: net: fujitsu: fix potential null-ptr-deref In fmvj18x_get_hwinfo(), if ioremap fails there will be NULL pointerderef. To fix this, check the return value of ioremap and return -1to the caller in case of failure.

CVE-2021-47150

In the Linux kernel, the following vulnerability has been resolved: net: fec: fix the potential memory leak in fec_enet_init() If the memory allocated for cbd_base is failed, it shouldfree the memory allocated for the queues, otherwise it causesmemory leak. And if the memory allocated for the queue...

CVE-2021-47151

In the Linux kernel, the following vulnerability has been resolved: interconnect: qcom: bcm-voter: add a missing of_node_put() Add a missing of_node_put() in of_bcm_voter_get() to avoid thereference leak.

CVE-2021-47152

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix data stream corruption Maxim reported several issues when forcing a TCP transparent proxyto use the MPTCP protocol for the inbound connections. He alsoprovided a clean reproducer. The problem boils down to 'mptcp_frag_ca...

CVE-2021-47153

In the Linux kernel, the following vulnerability has been resolved: i2c: i801: Don't generate an interrupt on bus reset Now that the i2c-i801 driver supports interrupts, setting the KILL bitin a attempt to recover from a timed out transaction triggers aninterrupt. Unfortunately, the interrupt handl...

CVE-2021-47158

In the Linux kernel, the following vulnerability has been resolved: net: dsa: sja1105: add error handling in sja1105_setup() If any of sja1105_static_config_load(), sja1105_clocking_setup() orsja1105_devlink_setup() fails, we can't just return in the middle ofsja1105_setup() or memory will leak. Ad...

CVE-2021-47159

In the Linux kernel, the following vulnerability has been resolved: net: dsa: fix a crash if ->get_sset_count() fails If ds->ops->get_sset_count() fails then it "count" is a negative errorcode such as -EOPNOTSUPP. Because "i" is an unsigned int, the negativeerror code is type promoted to a...

CVE-2021-47160

In the Linux kernel, the following vulnerability has been resolved: net: dsa: mt7530: fix VLAN traffic leaks PCR_MATRIX field was set to all 1's when VLAN filtering is enabled, butwas not reset when it is disabled, which may cause traffic leaks: ip link add br0 type bridge vlan_filtering 1 ip link ...

CVE-2021-47161

In the Linux kernel, the following vulnerability has been resolved: spi: spi-fsl-dspi: Fix a resource leak in an error handling path 'dspi_request_dma()' should be undone by a 'dspi_release_dma()' call in theerror handling path of the probe function, as already done in the removefunction

CVE-2021-47162

In the Linux kernel, the following vulnerability has been resolved: tipc: skb_linearize the head skb when reassembling msgs It's not a good idea to append the frag skb to a skb's frag_list ifthe frag_list already has skbs from elsewhere, such as this skb wascreated by pskb_copy() where the frag_lis...

CVE-2021-47163

In the Linux kernel, the following vulnerability has been resolved: tipc: wait and exit until all work queues are done On some host, a crash could be triggered simply by repeating thesecommands several times: modprobe tipc tipc bearer enable media udp name UDP1 localip 127.0.0.1 rmmod tipc [] BUG: ...

CVE-2021-47164

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix null deref accessing lag dev It could be the lag dev is null so stop processing the event.In bond_enslave() the active/backup slave being set before setting theupper dev so first event is without an upper dev.After s...

CVE-2021-47165

In the Linux kernel, the following vulnerability has been resolved: drm/meson: fix shutdown crash when component not probed When main component is not probed, by example when the dw-hdmi module isnot loaded yet or in probe defer, the following crash appears on shutdown: Unable to handle kernel NULL...

CVE-2021-47166

In the Linux kernel, the following vulnerability has been resolved: NFS: Don't corrupt the value of pg_bytes_written in nfs_do_recoalesce() The value of mirror->pg_bytes_written should only be updated after asuccessful attempt to flush out the requests on the list.

CVE-2021-47167

In the Linux kernel, the following vulnerability has been resolved: NFS: Fix an Oopsable condition in __nfs_pageio_add_request() Ensure that nfs_pageio_error_cleanup() resets the mirror array contents,so that the structure reflects the fact that it is now empty.Also change the test in nfs_pageio_do...

CVE-2021-47168

In the Linux kernel, the following vulnerability has been resolved: NFS: fix an incorrect limit in filelayout_decode_layout() The "sizeof(struct nfs_fh)" is two bytes too large and could lead tomemory corruption. It should be NFS_MAXFHSIZE because that's the sizeof the ->data[] buffer. I reverse...

CVE-2021-47169

In the Linux kernel, the following vulnerability has been resolved: serial: rp2: use 'request_firmware' instead of 'request_firmware_nowait' In 'rp2_probe', the driver registers 'rp2_uart_interrupt' then calls'rp2_fw_cb' through 'request_firmware_nowait'. In 'rp2_fw_cb', if thefirmware don't exists...

CVE-2021-47170

In the Linux kernel, the following vulnerability has been resolved: USB: usbfs: Don't WARN about excessively large memory allocations Syzbot found that the kernel generates a WARNing if the user tries tosubmit a bulk transfer through usbfs with a buffer that is way toolarge. This isn't a bug in the...

CVE-2021-47171

In the Linux kernel, the following vulnerability has been resolved: net: usb: fix memory leak in smsc75xx_bind Syzbot reported memory leak in smsc75xx_bind().The problem was is non-freed memory in case oferrors after memory allocation. backtrace:[<ffffffff84245b62>] kmalloc include/linux/slab...

CVE-2021-47172

In the Linux kernel, the following vulnerability has been resolved: iio: adc: ad7124: Fix potential overflow due to non sequential channel numbers Channel numbering must start at 0 and then not have any holes, orit is possible to overflow the available storage. Note this bug wasintroduced as part o...

CVE-2021-47173

In the Linux kernel, the following vulnerability has been resolved: misc/uss720: fix memory leak in uss720_probe uss720_probe forgets to decrease the refcount of usbdev in uss720_probe.Fix this by decreasing the refcount of usbdev by usb_put_dev. BUG: memory leakunreferenced object 0xffff8881011138...

CVE-2021-47174

In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_set_pipapo_avx2: Add irq_fpu_usable() check, fallback to non-AVX2 version Arturo reported this backtrace: [709732.358791] WARNING: CPU: 3 PID: 456 at arch/x86/kernel/fpu/core.c:128 kernel_fpu_begin_mask+0xae/0xe0[709...

CVE-2021-47175

In the Linux kernel, the following vulnerability has been resolved: net/sched: fq_pie: fix OOB access in the traffic path the following script: tc qdisc add dev eth0 handle 0x1 root fq_pie flows 2 tc qdisc add dev eth0 clsact tc filter add dev eth0 egress matchall action skbedit priority 0x10002 pi...

CVE-2021-47176

In the Linux kernel, the following vulnerability has been resolved: s390/dasd: add missing discipline function Fix crash with illegal operation exception in dasd_device_tasklet.Commit b72949328869 ("s390/dasd: Prepare for additional path event handling")renamed the verify_path function for ECKD but...

CVE-2021-47177

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix sysfs leak in alloc_iommu() iommu_device_sysfs_add() is called before, so is has to be cleaned on subsequenterrors.

CVE-2021-47178

In the Linux kernel, the following vulnerability has been resolved: scsi: target: core: Avoid smp_processor_id() in preemptible code The BUG message "BUG: using smp_processor_id() in preemptible [00000000]code" was observed for TCMU devices with kernel config DEBUG_PREEMPT. The message was observed...

CVE-2021-47179

In the Linux kernel, the following vulnerability has been resolved: NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return() Commit de144ff4234f changes _pnfs_return_layout() to callpnfs_mark_matching_lsegs_return() passing NULL as the structpnfs_layout_range argument. Unfortunate...

CVE-2021-47180

In the Linux kernel, the following vulnerability has been resolved: NFC: nci: fix memory leak in nci_allocate_device nfcmrvl_disconnect fails to free the hci_dev field in struct nci_dev.Fix this by freeing hci_dev in nci_free_device. BUG: memory leakunreferenced object 0xffff888111ea6800 (size 1024...

CVE-2021-47181

In the Linux kernel, the following vulnerability has been resolved: usb: musb: tusb6010: check return value after calling platform_get_resource() It will cause null-ptr-deref if platform_get_resource() returns NULL,we need check the return value.

CVE-2021-47182

In the Linux kernel, the following vulnerability has been resolved: scsi: core: Fix scsi_mode_sense() buffer length handling Several problems exist with scsi_mode_sense() buffer length handling: The allocation length field of the MODE SENSE(10) command is 16-bits,occupying bytes 7 and 8 of the CDB....

CVE-2021-47183

In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix link down processing to address NULL pointer dereference If an FC link down transition while PLOGIs are outstanding to fabric wellknown addresses, outstanding ABTS requests may result in a NULL pointerdereference. D...

CVE-2021-47184

In the Linux kernel, the following vulnerability has been resolved: i40e: Fix NULL ptr dereference on VSI filter sync Remove the reason of null pointer dereference in sync VSI filters.Added new I40E_VSI_RELEASING flag to signalize deleting and releasingof VSI resources to sync this thread with sync...

CVE-2021-47185

In the Linux kernel, the following vulnerability has been resolved: tty: tty_buffer: Fix the softlockup issue in flush_to_ldisc When running ltp testcase(ltp/testcases/kernel/pty/pty04.c) with arm64, there is a soft lockup,which look like this one: Workqueue: events_unbound flush_to_ldiscCall trace...

CVE-2021-47186

In the Linux kernel, the following vulnerability has been resolved: tipc: check for null after calling kmemdup kmemdup can return a null pointer so need to check for it, otherwisethe null key will be dereferenced later in tipc_crypto_key_xmit ascan be seen in the trace [1]. [1] https://syzkaller.ap...

CVE-2021-47187

In the Linux kernel, the following vulnerability has been resolved: arm64: dts: qcom: msm8998: Fix CPU/L2 idle state latency and residency The entry/exit latency and minimum residency in state for the idlestates of MSM8998 were ..bad: first of all, for all of them thetimings were written for CPU sl...

CVE-2021-47188

In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: Improve SCSI abort handling The following has been observed on a test setup: WARNING: CPU: 4 PID: 250 at drivers/scsi/ufs/ufshcd.c:2737 ufshcd_queuecommand+0x468/0x65cCall trace:ufshcd_queuecommand+0x468/0x65cscsi_...

CVE-2021-47189

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix memory ordering between normal and ordered work functions Ordered work functions aren't guaranteed to be handled by the same threadwhich executed the normal work functions. The only way execution betweennormal/ordered fu...

CVE-2021-47190

In the Linux kernel, the following vulnerability has been resolved: perf bpf: Avoid memory leak from perf_env__insert_btf() perf_env__insert_btf() doesn't insert if a duplicate BTF id isencountered and this causes a memory leak. Modify the function to returna success/error value and then free the m...

CVE-2021-47191

In the Linux kernel, the following vulnerability has been resolved: scsi: scsi_debug: Fix out-of-bound read in resp_readcap16() The following warning was observed running syzkaller: [ 3813.830724] sg_write: data in/out 65466/242 bytes for SCSI command 0x9e-- guessing data in;[ 3813.830724] program ...

CVE-2021-47192

In the Linux kernel, the following vulnerability has been resolved: scsi: core: sysfs: Fix hang when device state is set via sysfs This fixes a regression added with: commit f0f82e2476f6 ("scsi: core: Fix capacity set to zero afterofflinining device") The problem is that after iSCSI recovery, iscsi...

CVE-2021-47193

In the Linux kernel, the following vulnerability has been resolved: scsi: pm80xx: Fix memory leak during rmmod Driver failed to release all memory allocated. This would lead to memoryleak during driver removal. Properly free memory when the module is removed.

CVE-2021-47194

In the Linux kernel, the following vulnerability has been resolved: cfg80211: call cfg80211_stop_ap when switch from P2P_GO type If the userspace tools switch from NL80211_IFTYPE_P2P_GO toNL80211_IFTYPE_ADHOC via send_msg(NL80211_CMD_SET_INTERFACE), itdoes not call the cleanup cfg80211_stop_ap(), t...

CVE-2021-47195

In the Linux kernel, the following vulnerability has been resolved: spi: fix use-after-free of the add_lock mutex Commit 6098475d4cb4 ("spi: Fix deadlock when adding SPI controllers onSPI buses") introduced a per-controller mutex. But mutex_unlock() ofsaid lock is called after the controller is alr...

CVE-2021-47196

In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Set send and receive CQ before forwarding to the driver Preset both receive and send CQ pointers prior to call to the drivers andoverwrite it later again till the mlx4 is going to be changed do notoverwrite ibqp properti...

CVE-2021-47197

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: nullify cq->dbg pointer in mlx5_debug_cq_remove() Prior to this patch in case mlx5_core_destroy_cq() failed it proceedsto rest of destroy operations. mlx5_core_destroy_cq() could be called againby user and cause addit...

CVE-2021-47198

In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix use-after-free in lpfc_unreg_rpi() routine An error is detected with the following report when unloading the driver:"KASAN: use-after-free in lpfc_unreg_rpi+0x1b1b" The NLP_REG_LOGIN_SEND nlp_flag is set in lpfc_reg...

CVE-2021-47199

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: CT, Fix multiple allocations and memleak of mod acts CT clear action offload adds additional mod hdr actions to theflow's original mod actions in order to clear the registers whichhold ct_state.When such flow also includ...

CVE-2021-47200

In the Linux kernel, the following vulnerability has been resolved: drm/prime: Fix use after free in mmap with drm_gem_ttm_mmap drm_gem_ttm_mmap() drops a reference to the gem object on success. Ifthe gem object's refcount == 1 on entry to drm_gem_prime_mmap(), thatdrop will free the gem object, an...