[El-errata] ELSA-2020-5995 Important: Oracle Linux 7 Unbreakable Enterprise kernel security update

Errata Announcements for Oracle Linux el-errata at oss.oracle.com
Mon Dec 14 18:49:00 PST 2020

Oracle Linux Security Advisory ELSA-2020-5995


The following updated rpms for Oracle Linux 7 have been uploaded to the 
Unbreakable Linux Network:



Description of changes:

- RDMA/umem: Move to allocate SG table from pages (Maor Gottlieb) 
[Orabug: 32005117]
- lib/scatterlist: Add support in dynamic allocation of SG table from 
pages (Maor Gottlieb) [Orabug: 32005117]
- lib/scatterlist: Add SG_CHAIN and SG_END macros for LSB encodings 
(Anshuman Khandual) [Orabug: 32005117]
- lib/scatterlist: Avoid potential scatterlist entry overflow (Tvrtko 
Ursulin) [Orabug: 32005117]
- lib/scatterlist: Fix offset type in sg_alloc_table_from_pages (Tvrtko 
Ursulin) [Orabug: 32005117]
- uek-rpm: Don't build emb2 kernel for mips (Dave Kleikamp) [Orabug: 
- vt: Disable KD_FONT_OP_COPY (Daniel Vetter) [Orabug: 32187748] 
- page_frag: Recover from memory pressure (Dongli Zhang) [Orabug: 32201999]
- xen/events: block rogue events for some time (Juergen Gross) [Orabug: 
32177538] {CVE-2020-27673}
- xen/events: defer eoi in case of excessive number of events (Juergen 
Gross) [Orabug: 32177538] {CVE-2020-27673}
- xen/events: use a common cpu hotplug hook for event channels (Juergen 
Gross) [Orabug: 32177538] {CVE-2020-27673}
- xen/events: switch user event channels to lateeoi model (Juergen 
Gross) [Orabug: 32177538] {CVE-2020-27673}
- xen/pciback: use lateeoi irq binding (Juergen Gross) [Orabug: 
32177538] {CVE-2020-27673}
- xen/pvcallsback: use lateeoi irq binding (Juergen Gross) [Orabug: 
32177538] {CVE-2020-27673}
- xen/scsiback: use lateeoi irq binding (Juergen Gross) [Orabug: 
32177538] {CVE-2020-27673}
- xen/netback: use lateeoi irq binding (Juergen Gross) [Orabug: 
32177538] {CVE-2020-27673}
- xen/blkback: use lateeoi irq binding (Juergen Gross) [Orabug: 
32177538] {CVE-2020-27673}
- xen/events: add a new "late EOI" evtchn framework (Juergen Gross) 
[Orabug: 32177538] {CVE-2020-27673}
- xen/events: fix race in evtchn_fifo_unmask() (Juergen Gross) [Orabug: 
32177538] {CVE-2020-27673}
- xen/events: add a proper barrier to 2-level uevent unmasking (Juergen 
Gross) [Orabug: 32177538] {CVE-2020-27673}
- xen/events: avoid removing an event channel while handling it (Juergen 
Gross) [Orabug: 32177548]

- tty: make FONTX ioctl use the tty pointer they were actually passed 
(Linus Torvalds) [Orabug: 32122729] {CVE-2020-25668}
- vt: keyboard, extend func_buf_lock to readers (Jiri Slaby) [Orabug: 
32122952] {CVE-2020-25656} {CVE-2020-25656}
- vt: keyboard, simplify vt_kdgkbsent (Jiri Slaby) [Orabug: 32122952] 
- perf/core: Fix a memory leak in perf_event_parse_addr_filter() 
(kiyin(尹亮)) [Orabug: 32131175] {CVE-2020-25704}
- perf/core: Fix bad use of igrab() (Song Liu) [Orabug: 32131175] 
- IB/mlx4: Adjust delayed work when a dup is observed (Håkon Bugge) 
[Orabug: 32136898]
- IB/mlx4: Add support for REJ due to timeout (Håkon Bugge) [Orabug: 
- IB/mlx4: Fix starvation in paravirt mux/demux (Håkon Bugge) [Orabug: 
- IB/mlx4: Separate tunnel and wire bufs parameters (Håkon Bugge) 
[Orabug: 32136898]
- IB/mlx4: Add support for MRA (Håkon Bugge) [Orabug: 32136898]
- IB/mlx4: Add and improve logging (Håkon Bugge) [Orabug: 32136898]
- xen/gntdev: fix up blockable calls to mn_invl_range_start (Michal 
Hocko) [Orabug: 32139244]

- lockdown: By default run in integrity mode. (Konrad Rzeszutek Wilk) 
[Orabug: 32131561]
- Revert "iomap: Fix pipe page leakage during splicing" (George Kennedy) 
[Orabug: 32136519]
- kernel: add panic_on_taint (Rafael Aquini) [Orabug: 32138016]
- Revert "pci: hardcode enumeration" (Dave Aldridge) [Orabug: 32152249]
- hv_utils: drain the timesync packets on onchannelcallback (Vineeth 
Pillai) [Orabug: 32152144]
- hv_utils: return error if host timesysnc update is stale (Vineeth 
Pillai) [Orabug: 32152144]

- powercap: restrict energy meter to root access (Kanth Ghatraju) 
[Orabug: 32138487] {CVE-2020-8694} {CVE-2020-8695}
- Btrfs: fix selftests failure due to uninitialized i_mode in test 
inodes (Filipe Manana) [Orabug: 31864726]
- btrfs: fix return value mixup in btrfs_get_extent (Pavel Machek) 
[Orabug: 31864726]
- btrfs: inode: Verify inode mode to avoid NULL pointer dereference (Qu 
Wenruo) [Orabug: 31864726] {CVE-2019-19816}
- x86/apic: Get rid of multi CPU affinity (Thomas Gleixner) [Orabug: 
- hv_netvsc: Set probe mode to sync (Haiyang Zhang) [Orabug: 32132413]
- net/rds: Check for NULL rds_ibdev in rds_ib_rx() only if 
rds_ib_srq_enabled (Sharath Srinivasan) [Orabug: 32113843]
- perf symbols: Check if we read regular file in dso__load() (Jiri Olsa) 
[Orabug: 30696035]
- rds: Restore MR use-once semantics (Håkon Bugge) [Orabug: 31990092] 
[Orabug: 31990095]
- rds: Fix incorrect cmsg status and use-after-free (Håkon Bugge) 
[Orabug: 32003078] [Orabug: 32003081]
- dm cache: remove all obsolete writethrough-specific code (Mike 
Snitzer) [Orabug: 32010352]
- dm cache: pass cache structure to mode functions (Mike Snitzer) 
[Orabug: 32010352]
- dm rq: don't call blk_mq_queue_stopped() in dm_stop_queue() (Ming Lei) 
[Orabug: 32010352]
- bcache: allocate meta data pages as compound pages (Coly Li) [Orabug: 
- md/raid5: Fix Force reconstruct-write io stuck in degraded raid5 
(ChangSyun Peng) [Orabug: 32010352]
- bcache: fix super block seq numbers comparision in 
register_cache_set() (Coly Li) [Orabug: 32010352]
- md-cluster: fix wild pointer of unlock_all_bitmaps() (Zhao Heming) 
[Orabug: 32010352]
- dm: use noio when sending kobject event (Mikulas Patocka) [Orabug: 
- dm zoned: assign max_io_len correctly (Hou Tao) [Orabug: 32010352]
- md: add feature flag MD_FEATURE_RAID0_LAYOUT (NeilBrown) [Orabug: 
- dm zoned: return NULL if dmz_get_zone_for_reclaim() fails to find a 
zone (Hannes Reinecke) [Orabug: 32010352]
- dm mpath: switch paths in dm_blk_ioctl() code path (Martin Wilck) 
[Orabug: 32010352]
- dm crypt: avoid truncating the logical block size (Eric Biggers) 
[Orabug: 32010352]
- md: don't flush workqueue unconditionally in md_open (Guoqing Jiang) 
[Orabug: 32010352]
- x86/mce/therm_throt: Undo thermal polling properly on CPU offline 
(Thomas Gleixner) [Orabug: 32010658]
- x86/mce/therm_throt: Do not access uninitialized therm_work 
(Chuansheng Liu) [Orabug: 32010658]
- x86/mce/therm_throt: Mark throttle_active_work() as __maybe_unused 
(Arnd Bergmann) [Orabug: 32010658]
- x86/mce/therm_throt: Mask out read-only and reserved MSR bits 
(Srinivas Pandruvada) [Orabug: 32010658]
- x86/mce/therm_throt: Optimize notifications of thermal throttle 
(Srinivas Pandruvada) [Orabug: 32010658]
- jiffies: add utility function to calculate delta in ms (Matteo Croce) 
[Orabug: 32010658]
- rds: Force ordering of {set,clear}_bit operating on m_flags (Håkon 
Bugge) [Orabug: 31505749] [Orabug: 32014809]
- rds: Do not send canceled operations to the transport layer (Håkon 
Bugge) [Orabug: 31505749] [Orabug: 32014809]
- rds: Introduce rds_conn_to_path helper (Håkon Bugge) [Orabug: 
31505749] [Orabug: 32014809]
- Revert "RDS: Drop the connection as part of cancel to avoid hangs" 
(Håkon Bugge) [Orabug: 31505749] [Orabug: 32014809]
- Revert "rds: fix warning in rds_send_drop_to()" (Håkon Bugge) [Orabug: 
31505749] [Orabug: 32014809]
- Revert "rds: Use correct conn when dropping connections due to cancel" 
(Håkon Bugge) [Orabug: 31505749] [Orabug: 32014809]
- Revert "rds: prevent use-after-free of rds conn in rds_send_drop_to()" 
(Håkon Bugge) [Orabug: 31505749] [Orabug: 32014809]
- Revert "rds: Use bitmap to designate dropped connections" (Håkon 
Bugge) [Orabug: 31505749] [Orabug: 32014809]
- Bluetooth: A2MP: Fix not initializing all members (Luiz Augusto von 
Dentz) [Orabug: 32021288] {CVE-2020-12352}
- x86/kvm: move kvm_load/put_guest_xcr0 into atomic context (WANG Chao) 
[Orabug: 32021855]
- arm64: Corrects warning: ISO C90 forbids mixed declarations and code 
(John Donnelly) [Orabug: 32040061]
- hwrng: cavium: Corrects warning: unused variable 'dev_id' (John 
Donnelly) [Orabug: 32040066]
- Lock down /proc/kcore (redux!) (Konrad Rzeszutek Wilk) [Orabug: 32053127]
- lockdown: Lock down perf when in confidentiality mode (David Howells) 
[Orabug: 32053127]
- Lock down kprobes (redux!) (Konrad Rzeszutek Wilk) [Orabug: 32053127]
- debugfs: whitelist spectre mitigation when locked down (Eric Snowberg) 
[Orabug: 32053127]
- debugfs: Return -EPERM when locked down (Eric Snowberg) [Orabug: 32053127]
- debugfs: Restrict debugfs when the kernel is locked down (David 
Howells) [Orabug: 32053127]
- lockdown: Add __kernel_is_confidentiality_mode to figure out whether 
.. (Konrad Rzeszutek Wilk) [Orabug: 32053127]
- dtrace: Restrict access when the kernel is locked down in 
confidentiality mode (Konrad Rzeszutek Wilk) [Orabug: 32053127]
- bpf: Restrict bpf when kernel lockdown is in confidentiality mode 
(David Howells) [Orabug: 32053127]
- security: Add a static lockdown policy LSM [diet-version] (Matthew 
Garrett) [Orabug: 32053127]
- net/rds: Check for NULL rid_dev_rem_complete (Ka-Cheong Poon) [Orabug: 
- scsi: Corrects warning: passing argument 1 of 'wwn_to_u64' mismatch 
(John Donnelly) [Orabug: 32059622]
- ipvlan: Corrects warning: label 'unregister_netdev' defined but not 
used (John Donnelly) [Orabug: 32059740]
- mm, compaction: raise compaction priority after it withdrawns 
(Vlastimil Babka) [Orabug: 32065218]
- mm, reclaim: cleanup should_continue_reclaim() (Vlastimil Babka) 
[Orabug: 32065218]
- mm, reclaim: make should_continue_reclaim perform dryrun detection 
(Hillf Danton) [Orabug: 32065218]
- KVM: Drop "const" attribute from old memslot in commit_memory_region() 
(Sean Christopherson) [Orabug: 32068898]
- octeontx2-pf: Return proper RSS indirection table size always (Sunil 
Goutham) [Orabug: 32095651]
- octeontx2-af: Free RVU REE irq properly (Smadar Fuks) [Orabug: 32095651]
- octeontx2-af: Free RVU NIX IRQs properly. (Rakesh Babu) [Orabug: 32095651]
- octeontx2-af: Fix the BPID mask (Subbaraya Sundeep) [Orabug: 32095651]
- octeontx2-pf: Fix receive buffer size calculation (Sunil Goutham) 
[Orabug: 32095651]
- octeontx2-af: Fix updating wrong multicast list index in NIX_RX_ACTION 
(Naveen Mamindlapalli) [Orabug: 32095651]
- octeontx2-af: Ratelimit prints from AF error interrupt handlers 
(Naveen Mamindlapalli) [Orabug: 32095651]
- octeontx2-pf: Avoid null pointer dereference (Subbaraya Sundeep) 
[Orabug: 32095651]
- octeontx2-af: Check the msix offset return value (Subbaraya Sundeep) 
[Orabug: 32095651]
- octeontx2-af: make tx nibble fixup is always apply (Stanislaw Kardach) 
[Orabug: 32095651]
- octeontx2-af: Stop kpu parsing at layer3 for ipv6 fragmented packets. 
(Abhijit Ayarekar) [Orabug: 32095651]
- octeontx2-pf: Call mbox_reset before incrementing ack (Hariprasad 
Kelam) [Orabug: 32095651]
- octeontx2-af: Simplify otx2_mbox_reset call (Hariprasad Kelam) 
[Orabug: 32095651]
- A/A Bonding: Increase number and interval of GARPs sent by rdmaip 
(Sharath Srinivasan) [Orabug: 32095768]
- net/rds: Force ARP flush upon RDMA_CM_EVENT_ADDR_CHANGE (Gerd Rausch) 
[Orabug: 32095962]
- rds/ib: Fix: (rds: Deregister all FRWR mr with free_mr) (Manjunath 
Patil) [Orabug: 32113532]

- ocfs2: fix remounting needed after setfacl command (Gang He)
- Fix multiple variable definition with syzkaller (Hans Westgaard Ry) 
[Orabug: 32008770]
- drm/vmwgfx: Use the dma scatter-gather iterator to get dma addresses 
(Thomas Hellstrom) [Orabug: 32010349]
- i40e: Corrects i40e_setup_tc and i40e_xdp defined but not used 
warnings (John Donnelly) [Orabug: 32034050]
- bnxt: Corrects warning: 'struct tc_cls_flower_offload' (John Donnelly) 
[Orabug: 32041757]
- SCSI: Corrects 'ret' not used warning (John Donnelly) [Orabug: 32041763]
- IB/mlx4: disable CQ time stamping (aru kolappan) [Orabug: 32042520]
- qed: Corrects warning: 'qed_iwarp_ll2_slowpath' defined but not used 
(John Donnelly) [Orabug: 32052276]

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