🛡️ SUSE-SU-2021:3723-1 — kernel-rt (CVE-2021-3655 +13 more)

Security update for the Linux Kernel

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

The following security bugs were fixed:

• CVE-2021-3655: Fixed a missing size validations on inbound SCTP packets, which may have allowed the kernel to read uninitialized memory (bsc#1188563).
• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• CVE-2021-33033: Fixed a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled (bsc#1186109).
• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).
• CVE-2021-42739: The firewire subsystem had a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bsc#1184673).
• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).
• CVE-2021-34556: Fixed side-channel attack via a Speculative Store Bypass via unprivileged BPF program that could have obtain sensitive information from kernel memory (bsc#1188983).
• CVE-2021-35477: Fixed BPF stack frame pointer which could have been abused to disclose content of arbitrary kernel memory (bsc#1188985).
• CVE-2021-42252: Fixed an issue inside aspeed_lpc_ctrl_mmap that could have allowed local attackers to access the Aspeed LPC control interface to overwrite memory in the kernel and potentially execute privileges (bnc#1190479).
• CVE-2021-41864: Fixed prealloc_elems_and_freelist that allowed unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write (bnc#1191317).
• CVE-2021-42008: Fixed a slab out-of-bounds write in the decode_data function in drivers/net/hamradio/6pack.c. Input from a process that had the CAP_NET_ADMIN capability could have lead to root access (bsc#1191315).
• CVE-2021-37159: Fixed use-after-free and a double free in hso_free_net_device in drivers/net/usb/hso.c when unregister_netdev is called without checking for the NETREG_REGISTERED state (bnc#1188601).
• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).

The following non-security bugs were fixed:

• IB/hfi1: Fix abba locking issue with sc_disable() (git-fixes)
• ICMPv6: Add ICMPv6 Parameter Problem, code 3 definition (bsc#1191241).
• IPv6: reply ICMP error if the first fragment do not include all headers (bsc#1191241).
• KVM: PPC: Book3S HV: Save host FSCR in the P7/8 path (bsc#1065729).
• NFS: Do uncached readdir when we're seeking a cookie in an empty page cache (bsc#1191628).
• PM: base: power: do not try to use non-existing RTC for storing data (git-fixes).
• SMB3.1.1: Fix ids returned in POSIX query dir (bsc#1190317).
• SMB3.1.1: do not log warning message if server does not populate salt (bsc#1190317).
• SMB3.1.1: fix mount failure to some servers when compression enabled (bsc#1190317).
• SMB3.1.1: remove confusing mount warning when no SPNEGO info on negprot rsp (bsc#1190317).
• SMB3.1.1: update comments clarifying SPNEGO info in negprot response (bsc#1190317).
• SMB3: Add new info level for query directory (bsc#1190317).
• SMB3: Add support for getting and setting SACLs (bsc#1190317).
• SMB3: Fix mkdir when idsfromsid configured on mount (bsc#1190317).
• SMB3: Resolve data corruption of TCP server info fields (bsc#1190317).
• SMB3: add support for recognizing WSL reparse tags (bsc#1190317).
• SMB3: avoid confusing warning message on mount to Azure (bsc#1190317).
• SMB3: fix readpage for large swap cache (bsc#1190317).
• SMB3: incorrect file id in requests compounded with open (bsc#1190317).
• SMB3: update structures for new compression protocol definitions (bsc#1190317).
• USB: cdc-acm: fix break reporting (git-fixes).
• USB: cdc-acm: fix racy tty buffer accesses (git-fixes).
• USB: serial: cp210x: add ID for GW Instek GDM-834x Digital Multimeter (git-fixes).
• USB: serial: option: add Telit LN920 compositions (git-fixes).
• USB: serial: option: add device id for Foxconn T99W265 (git-fixes).
• USB: xhci: dbc: fix tty registration race (git-fixes).
• bitmap: remove unused function declaration (git-fixes).
• blktrace: Fix uaf in blk_trace access after removing by sysfs (bsc#1191452).
• cdc_ncm: Set NTB format again after altsetting switch for Huawei devices (git-fixes).
• cifs: Add get_security_type_str function to return sec type (bsc#1190317).
• cifs: Avoid field over-reading memcpy() (bsc#1190317).
• cifs: Change SIDs in ACEs while transferring file ownership (bsc#1190317).
• cifs: Clarify SMB1 code for POSIX Create (bsc#1190317).
• cifs: Clarify SMB1 code for POSIX Lock (bsc#1190317).
• cifs: Clarify SMB1 code for POSIX delete file (bsc#1190317).
• cifs: Clarify SMB1 code for SetFileSize (bsc#1190317).
• cifs: Clarify SMB1 code for UnixCreateSymLink (bsc#1190317).
• cifs: Clarify SMB1 code for UnixSetPathInfo (bsc#1190317).
• cifs: Clarify SMB1 code for