vulnerability
Ubuntu: (Multiple Advisories) (CVE-2021-4159): Linux kernel vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:L/AC:L/Au:M/C:C/I:N/A:N) | Feb 10, 2022 | Oct 11, 2022 | Aug 18, 2025 |
Severity
4
CVSS
(AV:L/AC:L/Au:M/C:C/I:N/A:N)
Published
Feb 10, 2022
Added
Oct 11, 2022
Modified
Aug 18, 2025
Description
A vulnerability was found in the Linux kernel's EBPF verifier when handling internal data structures. Internal memory locations could be returned to userspace. A local attacker with the permissions to insert eBPF code to the kernel can use this to leak internal kernel memory details defeating some of the exploit mitigations in place for the kernel.
Solutions
ubuntu-upgrade-linux-image-4-15-0-1058-dell300xubuntu-upgrade-linux-image-4-15-0-1112-oracleubuntu-upgrade-linux-image-4-15-0-1125-raspi2ubuntu-upgrade-linux-image-4-15-0-1133-kvmubuntu-upgrade-linux-image-4-15-0-1142-gcpubuntu-upgrade-linux-image-4-15-0-1143-snapdragonubuntu-upgrade-linux-image-4-15-0-1147-awsubuntu-upgrade-linux-image-4-15-0-1147-aws-hweubuntu-upgrade-linux-image-4-15-0-1158-azureubuntu-upgrade-linux-image-4-15-0-201-genericubuntu-upgrade-linux-image-4-15-0-201-generic-lpaeubuntu-upgrade-linux-image-4-15-0-201-lowlatencyubuntu-upgrade-linux-image-5-4-0-1034-ibmubuntu-upgrade-linux-image-5-4-0-1047-bluefieldubuntu-upgrade-linux-image-5-4-0-1054-gkeopubuntu-upgrade-linux-image-5-4-0-1071-raspiubuntu-upgrade-linux-image-5-4-0-1076-kvmubuntu-upgrade-linux-image-5-4-0-1084-gkeubuntu-upgrade-linux-image-5-4-0-1084-oracleubuntu-upgrade-linux-image-5-4-0-1086-awsubuntu-upgrade-linux-image-5-4-0-1090-gcpubuntu-upgrade-linux-image-5-4-0-1092-azure-fdeubuntu-upgrade-linux-image-5-4-0-128-genericubuntu-upgrade-linux-image-5-4-0-128-generic-lpaeubuntu-upgrade-linux-image-5-4-0-128-lowlatencyubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-aws-hweubuntu-upgrade-linux-image-aws-lts-18-04ubuntu-upgrade-linux-image-aws-lts-20-04ubuntu-upgrade-linux-image-azureubuntu-upgrade-linux-image-azure-fdeubuntu-upgrade-linux-image-azure-lts-18-04ubuntu-upgrade-linux-image-bluefieldubuntu-upgrade-linux-image-dell300xubuntu-upgrade-linux-image-gcpubuntu-upgrade-linux-image-gcp-lts-18-04ubuntu-upgrade-linux-image-gcp-lts-20-04ubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-hwe-16-04ubuntu-upgrade-linux-image-generic-hwe-18-04ubuntu-upgrade-linux-image-generic-lpaeubuntu-upgrade-linux-image-generic-lpae-hwe-18-04ubuntu-upgrade-linux-image-gkeubuntu-upgrade-linux-image-gke-5-4ubuntu-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-16-04ubuntu-upgrade-linux-image-lowlatency-hwe-18-04ubuntu-upgrade-linux-image-oemubuntu-upgrade-linux-image-oem-osp1ubuntu-upgrade-linux-image-oracleubuntu-upgrade-linux-image-oracle-lts-18-04ubuntu-upgrade-linux-image-oracle-lts-20-04ubuntu-upgrade-linux-image-raspiubuntu-upgrade-linux-image-raspi-hwe-18-04ubuntu-upgrade-linux-image-raspi2ubuntu-upgrade-linux-image-snapdragonubuntu-upgrade-linux-image-snapdragon-hwe-18-04ubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-hwe-16-04ubuntu-upgrade-linux-image-virtual-hwe-18-04
References
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