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CentOS: Security Advisory for bpftool (CESA-2021:0856)







CentOS Local Security Checks

CVSSv2 Base

CVSSv2 Base


CVSSv2 Vector

CVSSv2 Vector


Solution Type

Solution Type

Vendor Patch



1 year ago



1 year ago


The remote host is missing an update for the 'bpftool' package(s) announced via the CESA-2021:0856 advisory.



The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211) * kernel: SCSI target (LIO) write to any block on ILO backstore (CVE-2020-28374) * kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free (CVE-2020-29661) * kernel: malicious USB devices can lead to multiple out-of-bounds write (CVE-2019-19532) * kernel: out-of-bounds reads in pinctrl subsystem. (CVE-2020-0427) * kernel: use-after-free in i915_ppgtt_close in drivers/gpu/drm/i915/i915_gem_gtt.c (CVE-2020-7053) * kernel: performance counters race condition use-after-free (CVE-2020-14351) * kernel: Geneve/IPsec traffic may be unencrypted between two Geneve endpoints (CVE-2020-25645) * kernel: use-after-free in read in vt_do_kdgkb_ioctl (CVE-2020-25656) * kernel: ICMP rate limiting can be used for DNS poisoning attack (CVE-2020-25705) * kernel: increase slab leak leads to DoS (CVE-2021-20265) For 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. Bug Fix(es): * BUG: scheduling while atomic: memory allocation under spinlock in scsi_register_device_handler() (BZ#1619147) * WARNING in __iscsit_free_cmd during recovery Abort (BZ#1784540) * lpfc does not issue adisc to fcp-2 devices, does not respond to nvme target that send an adisc. (BZ#1875961) * Panic in semctl_nolock.constprop.15+0x25b (BZ#1877264) * [RHEL 7.7][md]Crash due to invalid pool workqueue pointer, work queue race (BZ#1889372) * Guest crash on intel CPU with -cpu host, -spec-ctrl, +ibpb (BZ#1890669) * RHEL7.9 - kernel/uv: handle length extension properly (BZ#1899172) * Commit b144f013fc16a06d7a4b9a4be668a3583fafeda2 'i40e: don't report link up for a VF who hasn't enabled queues' introducing issues with VM using DPDK (BZ#1901064) * writing to /sys/devices/(...)/net/eno49/queues/tx-16/xps_cpus triggers kernel panic (BZ#1903819) * [Hyper-V][RHEL-7.9]video: hyperv_fb: Fix the cache type when mapping the VRAM Edit (BZ#1908896) * kvm-rhel7.9 [AMD] - system crash observed while powering on virtual machine with attached VF interfaces. (BZ#1909036) * kernel: nvme nvme7: Connect command failed, error wo/DNR bit: 2 (BZ#1910817) * dm-mirror crashes from assuming underlying storage will have a non-NULL merge_bvec_fn (BZ#1916407) * watchdog: use nmi registers snapshot in hardlockup handler (BZ#1916589) * [DELL EMC 7.9 BUG] - Intel E810 NIC interfaces are not functional in RHEL 7.9 on system with AMD Rome CPUs (BZ#1918273) * [DELL EMC BUG] RHEL system log shows AMD-Vi error when system connected with Gen 4 NVMe drives. (BZ#1921187)

Affected Software

Affected Software

'bpftool' package(s) on CentOS 7.

Detection Method

Detection Method

Checks if a vulnerable package version is present on the target host.



Please install the updated package(s).

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