Threat Encyclopedia

RHSA-2021:2314-Security Advisory

Description

The vulnerabilities in the following products could cause the system to become vulnerable to malicious security attack: kernel

Analysis

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): kernel: Integer overflow in Intel(R) Graphics Drivers (CVE-2020-12362) kernel: Use after free via PI futex state (CVE-2021-3347) kernel: use-after-free in n_tty_receive_buf_common function in drivers/tty/n_tty.c (CVE-2020-8648) kernel: Improper input validation in some Intel(R) Graphics Drivers (CVE-2020-12363) kernel: Null pointer dereference in some Intel(R) Graphics Drivers (CVE-2020-12364) kernel: Speculation on pointer arithmetic against bpf_context pointer (CVE-2020-27170) kernel: Integer overflow in Intel(R) Graphics Drivers (CVE-2020-12362) kernel: Use after free via PI futex state (CVE-2021-3347) kernel: use-after-free in n_tty_receive_buf_common function in drivers/tty/n_tty.c (CVE-2020-8648) kernel: Improper input validation in some Intel(R) Graphics Drivers (CVE-2020-12363) kernel: Null pointer dereference in some Intel(R) Graphics Drivers (CVE-2020-12364) kernel: Speculation on pointer arithmetic against bpf_context pointer (CVE-2020-27170) 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): kernel crash when call the timer function (sctp_generate_proto_unreach_event) of sctp module (BZ#1707184) SCSI error handling process on HP P440ar controller gets stuck indefinitely in device reset operation (BZ#1830268) netfilter: reproducible deadlock on nft_log module autoload (BZ#1858329) netfilter: NULL pointer dereference in nf_tables_set_lookup() (BZ#1873171) [DELL EMC 7.9 Bug]: No acpi_pad threads on top command for 'power cap policy equal to 0 watts' (BZ#1883174) A race between i40e_ndo_set_vf_mac() and i40e_vsi_clear() in the i40e driver causes a use after free condition of the kmalloc-4096 slab cache. (BZ#1886003) netxen driver performs poorly with RT kernel (BZ#1894274) gendisk->disk_part_tbl->last_lookup retains pointer after partition deletion (BZ#1898596) Kernel experiences panic in update_group_power() due to division error even with Bug 1701115 fix (BZ#1910763) RHEL7.9 - zfcp: fix handling of FCP_RESID_OVER bit in fcp ingress path (BZ#1917839) RHEL7.9 - mm/THP: do not access vma->vm_mm after calling handle_userfault (BZ#1917840) raid: wrong raid io account (BZ#1927106) qla2x00_status_cont_entry() missing upstream patch that prevents unnecessary ABRT/warnings (BZ#1933784) RHEL 7.9.z - System hang caused by workqueue stall in qla2xxx driver (BZ#1937945) selinux: setsebool can trigger a deadlock (BZ#1939091) [Hyper-V][RHEL-7] Cannot boot kernel 3.10.0-1160.21.1.el7.x86_64 on Hyper-V (BZ#1941841) kernel crash when call the timer function (sctp_generate_proto_unreach_event) of sctp module (BZ#1707184) SCSI error handling process on HP P440ar controller gets stuck indefinitely in device reset operation (BZ#1830268) netfilter: reproducible deadlock on nft_log module autoload (BZ#1858329) netfilter: NULL pointer dereference in nf_tables_set_lookup() (BZ#1873171) [DELL EMC 7.9 Bug]: No acpi_pad threads on top command for 'power cap policy equal to 0 watts' (BZ#1883174) A race between i40e_ndo_set_vf_mac() and i40e_vsi_clear() in the i40e driver causes a use after free condition of the kmalloc-4096 slab cache. (BZ#1886003) netxen driver performs poorly with RT kernel (BZ#1894274) gendisk->disk_part_tbl->last_lookup retains pointer after partition deletion (BZ#1898596) Kernel experiences panic in update_group_power() due to division error even with Bug 1701115 fix (BZ#1910763) RHEL7.9 - zfcp: fix handling of FCP_RESID_OVER bit in fcp ingress path (BZ#1917839) RHEL7.9 - mm/THP: do not access vma->vm_mm after calling handle_userfault (BZ#1917840) raid: wrong raid io account (BZ#1927106) qla2x00_status_cont_entry() missing upstream patch that prevents unnecessary ABRT/warnings (BZ#1933784) RHEL 7.9.z - System hang caused by workqueue stall in qla2xxx driver (BZ#1937945) selinux: setsebool can trigger a deadlock (BZ#1939091) [Hyper-V][RHEL-7] Cannot boot kernel 3.10.0-1160.21.1.el7.x86_64 on Hyper-V (BZ#1941841) SolutionFor details on how to apply this update, which includes the changes described in this advisory, refer to:https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect.

Affected Products

kernel