vulnerability

Ubuntu: (Multiple Advisories) (CVE-2021-4001): Linux kernel (OEM) vulnerabilities

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Severity
5
CVSS
(AV:L/AC:M/Au:N/C:N/I:C/A:N)
Published
Jan 5, 2022
Added
Jan 6, 2022
Modified
Nov 7, 2024

Description

A race condition was found in the Linux kernel's ebpf verifier between bpf_map_update_elem and bpf_map_freeze due to a missing lock in kernel/bpf/syscall.c. In this flaw, a local user with a special privilege (cap_sys_admin or cap_bpf) can modify the frozen mapped address space. This flaw affects kernel versions prior to 5.16 rc2.

Solution(s)

ubuntu-upgrade-linux-image-5-10-0-1053-oemubuntu-upgrade-linux-image-5-11-0-1028-azureubuntu-upgrade-linux-image-5-11-0-1028-oracleubuntu-upgrade-linux-image-5-11-0-1029-gcpubuntu-upgrade-linux-image-5-13-0-1011-kvmubuntu-upgrade-linux-image-5-13-0-1012-awsubuntu-upgrade-linux-image-5-13-0-1013-gcpubuntu-upgrade-linux-image-5-13-0-1016-oracleubuntu-upgrade-linux-image-5-13-0-1016-raspiubuntu-upgrade-linux-image-5-13-0-1016-raspi-nolpaeubuntu-upgrade-linux-image-5-13-0-1029-oemubuntu-upgrade-linux-image-5-13-0-28-genericubuntu-upgrade-linux-image-5-13-0-28-generic-64kubuntu-upgrade-linux-image-5-13-0-28-generic-lpaeubuntu-upgrade-linux-image-5-13-0-28-lowlatencyubuntu-upgrade-linux-image-5-14-0-1022-oemubuntu-upgrade-linux-image-5-4-0-1023-iotubuntu-upgrade-linux-image-5-4-0-1031-xilinx-zynqmpubuntu-upgrade-linux-image-5-4-0-1058-ibmubuntu-upgrade-linux-image-5-4-0-1072-bluefieldubuntu-upgrade-linux-image-5-4-0-1078-gkeopubuntu-upgrade-linux-image-5-4-0-1095-raspiubuntu-upgrade-linux-image-5-4-0-1100-kvmubuntu-upgrade-linux-image-5-4-0-1110-oracleubuntu-upgrade-linux-image-5-4-0-1111-awsubuntu-upgrade-linux-image-5-4-0-1115-gcpubuntu-upgrade-linux-image-5-4-0-1117-azureubuntu-upgrade-linux-image-5-4-0-164-genericubuntu-upgrade-linux-image-5-4-0-164-generic-lpaeubuntu-upgrade-linux-image-5-4-0-164-lowlatencyubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-aws-lts-20-04ubuntu-upgrade-linux-image-azureubuntu-upgrade-linux-image-azure-lts-20-04ubuntu-upgrade-linux-image-bluefieldubuntu-upgrade-linux-image-gcpubuntu-upgrade-linux-image-gcp-lts-20-04ubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-64kubuntu-upgrade-linux-image-generic-64k-hwe-20-04ubuntu-upgrade-linux-image-generic-hwe-18-04ubuntu-upgrade-linux-image-generic-hwe-20-04ubuntu-upgrade-linux-image-generic-lpaeubuntu-upgrade-linux-image-generic-lpae-hwe-20-04ubuntu-upgrade-linux-image-gkeubuntu-upgrade-linux-image-gkeopubuntu-upgrade-linux-image-gkeop-5-4ubuntu-upgrade-linux-image-ibmubuntu-upgrade-linux-image-ibm-lts-20-04ubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-hwe-18-04ubuntu-upgrade-linux-image-lowlatency-hwe-20-04ubuntu-upgrade-linux-image-oemubuntu-upgrade-linux-image-oem-20-04ubuntu-upgrade-linux-image-oem-20-04bubuntu-upgrade-linux-image-oem-20-04cubuntu-upgrade-linux-image-oem-20-04dubuntu-upgrade-linux-image-oem-osp1ubuntu-upgrade-linux-image-oracleubuntu-upgrade-linux-image-oracle-lts-20-04ubuntu-upgrade-linux-image-raspiubuntu-upgrade-linux-image-raspi-hwe-18-04ubuntu-upgrade-linux-image-raspi-nolpaeubuntu-upgrade-linux-image-raspi2ubuntu-upgrade-linux-image-snapdragon-hwe-18-04ubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-hwe-18-04ubuntu-upgrade-linux-image-virtual-hwe-20-04ubuntu-upgrade-linux-image-xilinx-zynqmp

References

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