CVE-2021-47223

In the Linux kernel, the following vulnerability has been resolved:

net: bridge: fix vlan tunnel dst null pointer dereference

This patch fixes a tunnel_dst null pointer dereference due to lockless access in the tunnel egress path. When deleting a vlan tunnel the tunnel_dst pointer is set to NULL without waiting a grace period (i.e. while it's still usable) and packets egressing are dereferencing it without checking. Use READ/WRITE_ONCE to annotate the lockless use of tunnel_id, use RCU for accessing tunnel_dst and make sure it is read only once and checked in the egress path. The dst is already properly RCU protected so we don't need to do anything fancy than to make sure tunnel_id and tunnel_dst are read only once and checked in the egress path.

In the Linux kernel, the following vulnerability has been resolved:

net: bridge: fix vlan tunnel dst null pointer dereference

This patch fixes a tunnel_dst null pointer dereference due to lockless access in the tunnel egress path. When deleting a vlan tunnel the tunnel_dst pointer is set to NULL without waiting a grace period (i.e. while it's still usable) and packets egressing are dereferencing it without checking. Use READ/WRITE_ONCE to annotate the lockless use of tunnel_id, use RCU for accessing tunnel_dst and make sure it is read only once and checked in the egress path. The dst is already properly RCU protected so we don't need to do anything fancy than to make sure tunnel_id and tunnel_dst are read only once and checked in the egress path.

In the Linux kernel, the following vulnerability has been resolved:

net: bridge: fix vlan tunnel dst null pointer dereference

This patch fixes a tunnel_dst null pointer dereference due to lockless access in the tunnel egress path. When deleting a vlan tunnel the tunnel_dst pointer is set to NULL without waiting a grace period (i.e. while it's still usable) and packets egressing are dereferencing it without checking. Use READ/WRITE_ONCE to annotate the lockless use of tunnel_id, use RCU for accessing tunnel_dst and make sure it is read only once and checked in the egress path. The dst is already properly RCU protected so we don't need to do anything fancy than to make sure tunnel_id and tunnel_dst are read only once and checked in the egress path.

In the Linux kernel, the following vulnerability has been resolved:

net: bridge: fix vlan tunnel dst null pointer dereference

This patch fixes a tunnel_dst null pointer dereference due to lockless access in the tunnel egress path. When deleting a vlan tunnel the tunnel_dst pointer is set to NULL without waiting a grace period (i.e. while it's still usable) and packets egressing are dereferencing it without checking. Use READ/WRITE_ONCE to annotate the lockless use of tunnel_id, use RCU for accessing tunnel_dst and make sure it is read only once and checked in the egress path. The dst is already properly RCU protected so we don't need to do anything fancy than to make sure tunnel_id and tunnel_dst are read only once and checked in the egress path.

In the Linux kernel, the following vulnerability has been resolved:

net: bridge: fix vlan tunnel dst null pointer dereference

This patch fixes a tunnel_dst null pointer dereference due to lockless access in the tunnel egress path. When deleting a vlan tunnel the tunnel_dst pointer is set to NULL without waiting a grace period (i.e. while it's still usable) and packets egressing are dereferencing it without checking. Use READ/WRITE_ONCE to annotate the lockless use of tunnel_id, use RCU for accessing tunnel_dst and make sure it is read only once and checked in the egress path. The dst is already properly RCU protected so we don't need to do anything fancy than to make sure tunnel_id and tunnel_dst are read only once and checked in the egress path.

In the Linux kernel, the following vulnerability has been resolved: net: bridge: fix vlan tunnel dst null pointer dereference This patch fixes a tunnel_dst null pointer dereference due to lockless access in the tunnel egress path. When deleting a vlan tunnel the tunnel_dst pointer is set to NULL without waiting a grace period (i.e. while it's still usable) and packets egressing are dereferencing it without checking. Use READ/WRITE_ONCE to annotate the lockless use of tunnel_id, use RCU for accessing tunnel_dst and make sure it is read only once and checked in the egress path. The dst is already properly RCU protected so we don't need to do anything fancy than to make sure tunnel_id and tunnel_dst are read only once and checked in the egress path.

In the Linux kernel, the following vulnerability has been resolved: net: bridge: fix vlan tunnel dst null pointer dereference This patch fixes a tunnel_dst null pointer dereference due to lockless access in the tunnel egress path. When deleting a vlan tunnel the tunnel_dst pointer is set to NULL without waiting a grace period (i.e. while it's still usable) and packets egressing are dereferencing it without checking. Use READ/WRITE_ONCE to annotate the lockless use of tunnel_id, use RCU for accessing tunnel_dst and make sure it is read only once and checked in the egress path. The dst is already properly RCU protected so we don't need to do anything fancy than to make sure tunnel_id and tunnel_dst are read only once and checked in the egress path.

• net: bridge: fix vlan tunnel dst refcnt when egressing {CVE-2021-47222}
• net: bridge: fix vlan tunnel dst null pointer dereference {CVE-2021-47223}
• writeback: fix race between cgroup_writeback_umount() and inode_switch_wbs() {CVE-2026-64378}
• writeback, cgroup: increment isw_nr_in_flight before grabbing an inode {CVE-2026-64378}
• writeback, cgroup: add smp_mb() to cgroup_writeback_umount() {CVE-2026-64378}
• fs/writeback.c: use rcu_barrier() to wait for inflight wb switches going into workqueue when umount {CVE-2026-64378}
• libceph: validate banner payload length {CVE-2026-90067}
• drm/virtio: release the GEM object on virtio_gpu_vram_create() errors {CVE-2026-98606}
• procfs: fix missing RCU protection when reading real_parent in do_task_stat() {CVE-2026-46259}
• NFSv4/flexfiles: reject zero filehandle version count {CVE-2026-53392}
• smb: client: cancel reconnect work in clean_demultiplex_info() {CVE-2026-98175}
• smb: client: reject userspace cifs.idmap descriptions {CVE-2026-97564}
• smb: client: fix UAF and buffer leak in cifs_check_trans2() for malformed secondary T2 {CVE-2026-89637}
• smb: client: fix OOB read/write from unvalidated DataOffset in coalesce_t2() {CVE-2026-89633}
• net: usb: cx82310_eth: drop URB after 0xffff reboot sentinel to prevent partial_data heap overflow {CVE-2026-98025}
• RDMA/siw: Fix endpoint/socket association handling {CVE-2026-74345}
• RDMA/irdma: Fix out-of-bounds write in irdma_copy_user_pgaddrs {CVE-2026-74390}
• nfsd: fix clock domain mismatch in clients_still_reclaiming() {CVE-2026-89685}
• vdpa_sim_blk: reject out-of-range sector starts {CVE-2026-97991}
• Drivers: hv: vmbus: use generic driver_override infrastructure {CVE-2026-80676}
• HID: wacom: Fix OOB write in wacom_hid_set_device_mode() {CVE-2026-63916}
• nvme-tcp: do not accept C2HData based on blk_rq_payload_bytes() alone {CVE-2026-89482}
• nvmet-tcp: fix page fragment cache leak in error path {CVE-2026-74386}
• bpf: mark a NULL call argument precise {CVE-2026-98019}
• bpf: Don't predict JMP32 pointer vs zero comparisons {CVE-2026-98041}
• ASoC: SOF: ipc3-control: Fix heap overflow in bytes_ext put/get {CVE-2026-72262}
• ASoC: SOF: ipc3-topology: Move and correct size checks in sof_ipc3_control_load_bytes() {CVE-2026-72262}
• Bluetooth: L2CAP: fix chan mode for LE_CONN_REQ + EXT_FLOWCTL pchan {CVE-2026-98108}
• mm/page_reporting: use system_freezable_wq to fix UAF during suspend {CVE-2026-74481}
• netfilter: synproxy: refresh tcphdr after skb_ensure_writable {CVE-2026-64007}
• netfilter: nf_conntrack_sip: widen NAT rewrite delta to s32 in sip_help_tcp() {CVE-2026-74569}
• reboot: fix cad_pid use-after-free race {CVE-2026-97938}
• fs/resctrl: Fix UAF from worker threads when domains are removed {CVE-2026-93099}
• ext4: fix out-of-bounds read in ext4_read_inline_dir() {CVE-2026-89786}
• ext4: fix dirtyclusters double decrement on fs shutdown {CVE-2026-45920}
• openvswitch: Fix CT limit teardown use-after-free {CVE-2026-89488}
• sctp: fix NULL deref on untransmitted RECONF completion {CVE-2026-89477}
• netfilter: conntrack: remove sprintf usage {CVE-2026-53002}
• fuse: re-lock request before replacing page cache folio {CVE-2026-53388}
• fanotify: fix false positive on permission events {CVE-2026-46150}
• configfs_lookup(): don't leave ->s_dentry dangling on failure {CVE-2026-74359}
• sctp: add INIT verification after cookie unpacking {CVE-2026-72398}
• sctp: fix err_chunk memory leaks in INIT handling {CVE-2026-72413}
• sctp: validate embedded INIT chunk and address list lengths in cookie {CVE-2026-53224}
• sctp: stream: fully roll back denied add-stream state {CVE-2026-52929}
• sctp: validate cached peer INIT chunk length in COOKIE_ECHO processing {CVE-2026-53246}
• sctp: diag: reject stale associations in dump_one path {CVE-2026-52917}
• sctp: Hold sock lock while iterating over address list {CVE-2026-52917}
• sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL {CVE-2026-46227}
• nfsd: gate nfs3…

The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2021-47222: net: bridge: fix vlan tunnel dst refcnt when egressing (bsc#1224857).
• CVE-2021-47223: net: bridge: fix vlan tunnel dst null pointer dereference (bsc#1224856).
• CVE-2024-26644: btrfs: do not abort filesystem when attempting to snapshot deleted subvolume (bsc#1222072).
• CVE-2024-47809: dlm: fix possible lkb_resource null dereference (bsc#1235714).
• CVE-2024-48881: bcache: revert replacing IS_ERR_OR_NULL with IS_ERR again (bsc#1235727).
• CVE-2024-49948: net: add more sanity checks to qdisc_pkt_len_init() (bsc#1232161).
• CVE-2024-50142: xfrm: validate new SA's prefixlen using SA family when sel.family is unset (bsc#1233028).
• CVE-2024-52332: igb: Fix potential invalid memory access in igb_init_module() (bsc#1235700).
• CVE-2024-53155: ocfs2: fix uninitialized value in ocfs2_file_read_iter() (bsc#1234855).
• CVE-2024-53185: smb: client: fix NULL ptr deref in crypto_aead_setkey() (bsc#1234901).
• CVE-2024-53197: ALSA: usb-audio: Fix potential out-of-bound accesses for Extigy and Mbox devices (bsc#1235464).
• CVE-2024-53227: scsi: bfa: Fix use-after-free in bfad_im_module_exit() (bsc#1235011).
• CVE-2024-55916: Drivers: hv: util: Avoid accessing a ringbuffer not initialized yet (bsc#1235747).
• CVE-2024-56369: drm/modes: Avoid divide by zero harder in drm_mode_vrefresh() (bsc#1235750).
• CVE-2024-56532: ALSA: us122l: Use snd_card_free_when_closed() at disconnection (bsc#1235059).
• CVE-2024-56533: ALSA: usx2y: Use snd_card_free_when_closed() at disconnection (bsc#1235053).
• CVE-2024-56539: wifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_config_scan() (bsc#1234963).
• CVE-2024-56574: media: ts2020: fix null-ptr-deref in ts2020_probe() (bsc#1235040).
• CVE-2024-56593: wifi: brcmfmac: Fix oops due to NULL pointer dereference in brcmf_sdiod_sglist_rw() (bsc#1235252).
• CVE-2024-56594: drm/amdgpu: set the right AMDGPU sg segment limitation (bsc#1235413).
• CVE-2024-56600: net: inet6: do not leave a dangling sk pointer in inet6_create() (bsc#1235217).
• CVE-2024-56601: net: inet: do not leave a dangling sk pointer in inet_create() (bsc#1235230).
• CVE-2024-56615: bpf: fix OOB devmap writes when deleting elements (bsc#1235426).
• CVE-2024-56623: scsi: qla2xxx: Fix use after free on unload (bsc#1235466).
• CVE-2024-56630: ocfs2: free inode when ocfs2_get_init_inode() fails (bsc#1235479).
• CVE-2024-56637: netfilter: ipset: Hold module reference while requesting a module (bsc#1235523).
• CVE-2024-56641: net/smc: initialize close_work early to avoid warning (bsc#1235526).
• CVE-2024-56643: dccp: Fix memory leak in dccp_feat_change_recv (bsc#1235132).
• CVE-2024-56650: netfilter: x_tables: fix LED ID check in led_tg_check() (bsc#1235430).
• CVE-2024-56662: acpi: nfit: vmalloc-out-of-bounds Read in acpi_nfit_ctl (bsc#1235533).
• CVE-2024-56681: crypto: bcm - add error check in the ahash_hmac_init function (bsc#1235557).
• CVE-2024-56700: media: wl128x: Fix atomicity violation in fmc_send_cmd() (bsc#1235500).
• CVE-2024-56722: RDMA/hns: Fix cpu stuck caused by printings during reset (bsc#1235570).
• CVE-2024-56739: rtc: check if __rtc_read_time was successful in rtc_timer_do_work() (bsc#1235611).
• CVE-2024-56747: scsi: qedi: Fix a possible memory leak in qedi_alloc_and_init_sb() (bsc#1234934).
• CVE-2024-56748: scsi: qedf: Fix a possible memory leak in qedf_alloc_and_init_sb() (bsc#1235627).
• CVE-2024-56759: btrfs: fix use-after-free when COWing tree bock and tracing is enabled (bsc#1235645).
• CVE-2024-56763: tracing: Prevent bad count for tracing_cpumask_write (bsc#1235638).
• CVE-2024-56769: media: dvb-frontends: dib3000mb: fix uninit-value in dib3000_write_reg (bsc#1235155).
• CVE-2024-57884: mm: vmscan: account for free pages to prevent infinite Loop in throttle_direct_reclaim() (bsc#1235948).
• CVE-2024-57890: RDMA/uverbs: Prevent integer overflow issue…