🛡️ SUSE-SU-2021:3640-1 — kernel-azure (CVE-2021-3772 +10 more)

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP2 Azure kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

  • CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).
  • 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-2021-43056: Fixed possible KVM host crash via malicious KVM guest on Power8 (bnc#1192107).
  • CVE-2021-3896: Fixed a array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (bsc#1191958).
  • 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-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
  • 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).

The following non-security bugs were fixed:

  • ACPI: bgrt: Fix CFI violation (git-fixes).
  • ACPI: fix NULL pointer dereference (git-fixes).
  • ALSA: hda/realtek - ALC236 headset MIC recording issue (git-fixes).
  • ALSA: hda/realtek: Add quirk for Clevo PC50HS (git-fixes).
  • ALSA: hda/realtek: Add quirk for Clevo X170KM-G (git-fixes).
  • ALSA: hda/realtek: Complete partial device name to avoid ambiguity (git-fixes).
  • ALSA: hda/realtek: Fix the mic type detection issue for ASUS G551JW (git-fixes).
  • ALSA: hda: avoid write to STATESTS if controller is in reset (git-fixes).
  • ALSA: seq: Fix a potential UAF by wrong private_free call order (git-fixes).
  • ALSA: usb-audio: Add quirk for VF0770 (git-fixes).
  • ALSA: usb-audio: Provide quirk for Sennheiser GSP670 Headset (git-fixes).
  • ASoC: DAPM: Fix missing kctl change notifications (git-fixes).
  • ASoC: wm8960: Fix clock configuration on slave mode (git-fixes).
  • Add obsolete_rebuilds_subpackage (boo#1172073 bsc#1191731).
  • HID: apple: Fix logical maximum and usage maximum of Magic Keyboard JIS (git-fixes).
  • HID: betop: fix slab-out-of-bounds Write in betop_probe (git-fixes).
  • HID: u2fzero: ignore incomplete packets without data (git-fixes).
  • HID: usbhid: free raw_report buffers in usbhid_stop (git-fixes).
  • HID: wacom: Add new Intuos BT (CTL-4100WL/CTL-6100WL) device IDs (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).
  • Input: snvs_pwrkey - add clk handling (git-fixes).
  • Input: xpad - add support for another USB ID of Nacon GC-100 (git-fixes).
  • KVM: PPC: Book3S HV Nested: Reflect guest PMU in-use to L0 when guest SPRs are live (bsc#1156395).
  • KVM: PPC: Book3S HV Nested: Sanitise H_ENTER_NESTED TM state (bsc#1156395).
  • KVM: PPC: Book3S HV: Save host FSCR in the P7/8 path (bsc#1065729).
  • KVM: PPC: Book3S HV: Tolerate treclaim. in fake-suspend mode changing registers (bsc#1156395).
  • KVM: PPC: Fix clearing never mapped TCEs in realmode (bsc#1156395).
  • KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak (bsc#1156395).
  • KVM: s390: index kvm->arch.idle_mask by vcpu_idx (bsc#1133021).
  • KVM: s390: VSIE: correctly handle MVPG when in VSIE (bsc#1133021).
  • KVM: s390: extend kvm_s390_shadow_fault to return entry pointer (bsc#1133021).
  • KVM: s390: split kvm_s390_logical_to_effective (bsc#1133021).
  • NFC: digital: fix possible memory leak in digital_in_send_sdd_req() (git-fixes).
  • NFC: digital: fix possible memory leak in digital_tg_listen_mdaa() (git-fixes).
  • NFS: Do uncached readdir when we're seeking a cookie in an empty page cache (bsc#1191628).
  • PCI: Fix pci_host_bridge struct device release/free handling (git-fixes).
  • USB: cdc-acm: clean up probe error labels (git-fixes).
  • USB: cdc-acm: fix minor-number release (git-fixes).
  • USB: serial: option: add Quectel EC200S-CN module support (git-fixes).
  • USB: serial: option: add Telit LE910Cx composition 0x1204 (git-fixes).
  • USB: serial: option: add prod. id for Quectel EG91 (git-fixes).
  • USB: serial: qcserial: add EM9191 QDL support (git-fixes).
  • USB: xhci: dbc: fix tty registration race (git-fixes).
  • acpi/arm64: fix next_platform_timer() section mismatch error (git-fixes).
  • ata: ah

Affected software

SUSE-SU-2021:3640-1 is recorded against 3 packages.

  • kernel-azure (fixed in 5.3.18-18.72.2)
  • kernel-source-azure (fixed in 5.3.18-18.72.2)
  • kernel-syms-azure (fixed in 5.3.18-18.72.1)

Timeline and source

Published on 9 November 2021 and last revised on 4 February 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.suse.com (Advisory)
bugzilla.suse.com (Report)
bugzilla.suse.com (Report)
bugzilla.suse.com (Report)
bugzilla.suse.com (Report)
bugzilla.suse.com (Report)
bugzilla.suse.com (Report)
bugzilla.suse.com (Report)
bugzilla.suse.com (Report)
bugzilla.suse.com (Report)
bugzilla.suse.com (Report)
bugzilla.suse.com (Report)
bugzilla.suse.com (Report)
bugzilla.suse.com (Report)
bugzilla.suse.com (Report)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2021-11-09
Updated 2026-08-20
Modified 2026-02-04
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel-azure 5.3.18-18.72.2
kernel-source-azure 5.3.18-18.72.2
kernel-syms-azure 5.3.18-18.72.1

References

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