SUSE-SU-2021:3207-1

SUSE-SU-2021:3207-1 · Security update for the Linux Kernel

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The SUSE Linux Enterprise 15 SP2 kernel was updated to receive various security and bugfixes. The following security bugs were fixed: - CVE-2021-3759: Unaccounted ipc objects in Linux kernel could have lead to breaking memcg limits and DoS attacks (bsc#1190115). - CVE-2021-38160: Data corruption or loss could be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190117) - CVE-2021-3640: Fixed a Use-After-Free vulnerability in function sco_sock_sendmsg() in the bluetooth stack (bsc#1188172). - CVE-2021-3753: Fixed race out-of-bounds in virtual terminal handling (bsc#1190025). - CVE-2021-3743: Fixed OOB Read in qrtr_endpoint_post (bsc#1189883). - CVE-2021-3739: Fixed a NULL pointer dereference when deleting device by invalid id (bsc#1189832 ). - CVE-2021-3732: Mounting overlayfs inside an unprivileged user namespace can reveal files (bsc#1189706). - CVE-2021-3653: Missing validation of the `int_ctl` VMCB field and allows a malicious L1 guest to enable AVIC support for the L2 guest. (bsc#1189399). - CVE-2021-3656: Missing validation of the the `virt_ext` VMCB field and allows a malicious L1 guest to disable both VMLOAD/VMSAVE intercepts and VLS for the L2 guest (bsc#1189400). - CVE-2021-38198: arch/x86/kvm/mmu/paging_tmpl.h incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault (bnc#1189262). - CVE-2021-38207: drivers/net/ethernet/xilinx/ll_temac_main.c allowed remote attackers to cause a denial of service (buffer overflow and lockup) by sending heavy network traffic for about ten minutes (bnc#1189298). - CVE-2021-38205: drivers/net/ethernet/xilinx/xilinx_emaclite.c made it easier for attackers to defeat an ASLR protection mechanism because it prints a kernel pointer (i.e., the real IOMEM pointer) (bnc#1189292). - CVE-2021-38204: drivers/usb/host/max3421-hcd.c allowed physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations (bnc#1189291). - CVE-2021-3679: A lack of CPU resource in tracing module functionality was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service (bnc#1189057). - 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). The following non-security bugs were fixed: - ACPI: NFIT: Fix support for virtual SPA ranges (git-fixes). - ACPI: processor: Clean up acpi_processor_evaluate_cst() (bsc#1175543) - ACPI: processor: Export acpi_processor_evaluate_cst() (bsc#1175543) - ACPI: processor: Export function to claim _CST control (bsc#1175543) - ACPI: processor: Introduce acpi_processor_evaluate_cst() (bsc#1175543) - ACPI: processor: Make ACPI_PROCESSOR_CSTATE depend on ACPI_PROCESSOR (bsc#1175543) - ALSA: hda - fix the 'Capture Switch' value change notifications (git-fixes). - ALSA: hda/realtek: Enable 4-speaker output for Dell XPS 15 9510 laptop (git-fixes). - ALSA: hda/realtek: Fix headset mic for Acer SWIFT SF314-56 (ALC256) (git-fixes). - ALSA: hda/realtek: add mic quirk for Acer SF314-42 (git-fixes). - ALSA: hda/via: Apply runtime PM workaround for ASUS B23E (git-fixes). - ALSA: hda: Add quirk for ASUS Flow x13 (git-fixes). - ALSA: pcm: fix divide error in snd_pcm_lib_ioctl (git-fixes). - ALSA: seq: Fix racy deletion of subscriber (git-fixes). - ALSA: usb-audio: Add registration quirk for JBL Quantum 600 (git-fixes). - ALSA: usb-audio: Fix regression on Sony WALKMAN NW-A45 DAC (git-fixes). - ALSA: usb-audio: Fix superfluous autosuspend recovery (git-fixes). - ALSA: usb-audio: fix incorrect clock source setting (git-fixes). - ASoC: Intel: Skylake: Leave data as is when invoking TLV IPCs (git-fixes). - ASoC: cs42l42: Correct definition of ADC Volume control (git-fixes). - ASoC: cs42l42: Do not allow SND_SOC_DAIFMT_LEFT_J (git-fixes). - ASoC: cs42l42: Fix LRCLK frame start edge (git-fixes). - ASoC: cs42l42: Fix inversion of ADC Notch Switch control (git-fixes). - ASoC: cs42l42: Remove duplicate control for WNF filter frequency (git-fixes). - ASoC: intel: atom: Fix breakage for PCM buffer address setup (git-fixes). - ASoC: intel: atom: Fix reference to PCM buffer address (git-fixes). - ASoC: ti: delete some dead code in omap_abe_probe() (git-fixes). - ASoC: tlv320aic31xx: Fix jack detection after suspend (git-fixes). - ASoC: tlv320aic31xx: fix reversed bclk/wclk master bits (git-fixes). - ASoC: wcd9335: Disable irq on slave ports in the remove function (git-fixes). - ASoC: wcd9335: Fix a double irq free in the remove function (git-fixes). - ASoC: wcd9335: Fix a memory leak in the error handling path of the probe function (git-fixes). - ASoC: xilinx: Fix reference to PCM buffer address (git-fixes). - Bluetooth: add timeout sanity check to hci_inquiry (git-fixes). - Bluetooth: defer cleanup of resources in hci_unregister_dev() (git-fixes). - Bluetooth: fix repeated calls to sco_sock_kill (git-fixes). - Bluetooth: hidp: use correct wait queue when removing ctrl_wait (git-fixes). - Bluetooth: increase BTNAMSIZ to 21 chars to fix potential buffer overflow (git-fixes). - Bluetooth: sco: prevent information leak in sco_conn_defer_accept() (git-fixes). - Documentation: admin-guide: PM: Add intel_idle document (bsc#1175543) - Drop watchdog iTCO_wdt patch that causes incompatible behavior (bsc#1189449) Also blacklisted - Fix breakage of swap over NFS (bsc#1188924). - Fix kabi of prepare_to_wait_exclusive() (bsc#1189575). - HID: i2c-hid: Fix Elan touchpad regression (git-fixes). - HID: input: do not report stylus battery state as 'full' (git-fixes). - KVM: VMX: Drop guest CPUID check for VMXE in vmx_set_cr4() (bsc#1188786). - KVM: VMX: Enable machine check support for 32bit targets (bsc#1188787). - KVM: VMX: Explicitly clear RFLAGS.CF and RFLAGS.ZF in VM-Exit RSB path (bsc#1188788). - KVM: nVMX: Really make emulated nested preemption timer pinned (bsc#1188780). - KVM: nVMX: Reset the segment cache when stuffing guest segs (bsc#1188781). - KVM: nVMX: Skip IBPB when switching between vmcs01 and vmcs02 (bsc#1188782). - KVM: nVMX: Sync unsync'd vmcs02 state to vmcs12 on migration (bsc#1188783). - KVM: nVMX: Truncate bits 63:32 of VMCS field on nested check in !64-bit (bsc#1188784). - KVM: x86: bit 8 of non-leaf PDPEs is not reserved (bsc#1188790). - Move upstreamed BT fixes into sorted section - NFS: Correct size calculation for create reply length (bsc#1189870). - NFSv4.1: Do not rebind to the same source port when (bnc#1186264 bnc#1189021) - NFSv4/pNFS: Do not call _nfs4_pnfs_v3_ds_connect multiple times (git-fixes). - NFSv4: Initialise connection to the server in nfs4_alloc_client() (bsc#1040364). - PCI/MSI: Correct misleading comments (git-fixes). - PCI/MSI: Do not set invalid bits in MSI mask (git-fixes). - PCI/MSI: Enable and mask MSI-X early (git-fixes). - PCI/MSI: Enforce MSI[X] entry updates to be visible (git-fixes). - PCI/MSI: Enforce that MSI-X table entry is masked for update (git-fixes). - PCI/MSI: Mask all unused MSI-X entries (git-fixes). - PCI/MSI: Skip masking MSI-X on Xen PV (git-fixes). - PCI/MSI: Use msi_mask_irq() in pci_msi_shutdown() (git-fixes). - PCI: Increase D3 delay for AMD Renoir/Cezanne XHCI (git-fixes). - PCI: PM: Avoid forcing PCI_D0 for wakeup reasons inconsistently (git-fixes). - PCI: PM: Enable PME if it can be signaled from D3cold (git-fixes). - README: Modernize build instructions. - Revert 'ACPICA: Fix memory leak caused by _CID repair function' (git-fixes). - Revert 'USB: serial: ch341: fix character loss at high transfer rates' (git-fixes). - Revert 'dmaengine: imx-sdma: refine to load context only

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Publication

2021-09-23T14:19:32Z

Mise à jour

2026-02-04T03:00:28.290961Z

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