{
  "cveId": "CVE-2021-3656",
  "url": "https://patchblox.com/security/cve/CVE-2021-3656",
  "summary": "CVE-2021-3656 is fixed in 48 products on 1 platform, first by RHSA-2021:4056, released November 2, 2021. It is not reported as exploited. Patch Radar priority: High.",
  "title": "bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: u...",
  "description": "The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: use-after-free in drivers/infiniband/core/ucma.c ctx use-after-free (CVE-2020-36385)\n\n* kernel: out-of-bounds write due to a heap buffer overflow in __hidinput_change_resolution_multipliers() of hid-input.c (CVE-2021-0512)\n\n* kernel: SVM nested virtualization issue in KVM (VMLOAD/VMSAVE) (CVE-2021-3656)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nBug Fix(es):\n\n* [HPE 8.3 bug] No EDAC MC0 message with one-DIMM two-processor configuration under RHEL8.3 (BZ#1982182)\n\n* mlx: devlink port function shows all zero hw_addr (BZ#1986837)\n\n* net/sched: act_mirred: allow saving the last chain processed on xmit path (BZ#1992230)\n\n* RHEL8.3 - System hang and / or r/o fs during SVC/v5k/v7k maintenance with ibmvfc (BZ#1993892)\n\n* RHEL8.1 Snapshot3 - PVT:940:virt:4TB:LPM operation failed by returning HSCLA2CF, HSCL365C SRC\u0027s - Linux partition suspend timeout (-\u003E documentation/Linux Alert through LTC bug 182549) (BZ#1993952)\n\n* RHEL8.4 - benchTableRepDMLAsyncBarrier regresses by 34% on RHEL8.4 on POWER9 compared to RHEL8.2 (performance) (BZ#1997431)\n\n* [panic] call trace: ice_probe\u002B0x238/0x10f0 [ice] (BZ#1997539)\n\n* [ice, PTP] ice: fix GPIO 1PPS signal  (BZ#1997572)\n\n* Fix locality handling in the tpm_tis driver (BZ#1998219)\n\n* [ice, PTP]: fix Tx queue iteration for Tx timestamp enablement (BZ#2000128)\n\n* PCI passthrough with NVidia GPU \u0022Invalid device 0003:01:00.0 iommu_group file /sys/bus/pci/devices/0003:01:00.0/iommu_group is not a symlink\u0022 (BZ#2000602)\n\n* [DELL 8.4 BUG] - System Hangs at Dell Logo When Boot to OS(e1000e with wrong GbE checksum) (BZ#2002335)\n\n* RHEL8.4 - kernel: Fix hanging ioctl caused by wrong msg counter (BZ#2002635)\n\n* kernel: get_timespec64 does not ignore padding in compat syscalls (BZ#2003569)\n\n* [mlx5] eth0: hw csum failure (BZ#2005980)\n\n* xlog_grant_head_wait() does not return and system hangs (BZ#2007413)\n\n* panic while breaking a lease/delegation after user mode helper invocation (BZ#2010331)\n\n* Lockd invalid cast to nlm_lockowner (BZ#2010820)\n\n* [xfstests generic/388] XFS: Assertion failed: 0, file: fs/xfs/xfs_mount.c, line: 1218 (BZ#2011919)\n\nEnhancement(s):\n\n* [Intel 8.5 FEAT] ice: Enable PTP Support (BZ#1998220)\n\n* [Intel 8.5 FEAT] ice: Enable GPIO/SDP Support (BZ#1998221)",
  "published": "2021-11-02T00:00:00Z",
  "severity": "Important",
  "cvss": 8.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
  "epss": 0.00658,
  "epssPercentile": 0.51733,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
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