vulnerability
Ubuntu: (Multiple Advisories) (CVE-2021-34556): Linux kernel vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 2 | (AV:L/AC:L/Au:N/C:P/I:N/A:N) | Aug 2, 2021 | Sep 28, 2021 | Mar 27, 2026 |
Severity
2
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Published
Aug 2, 2021
Added
Sep 28, 2021
Modified
Mar 27, 2026
Description
In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack.
Solutions
ubuntu-upgrade-linux-image-5-10-0-1050-oemubuntu-upgrade-linux-image-5-11-0-1017-azureubuntu-upgrade-linux-image-5-11-0-1017-kvmubuntu-upgrade-linux-image-5-11-0-1019-awsubuntu-upgrade-linux-image-5-11-0-1019-oracleubuntu-upgrade-linux-image-5-11-0-1019-raspiubuntu-upgrade-linux-image-5-11-0-1019-raspi-nolpaeubuntu-upgrade-linux-image-5-11-0-1020-gcpubuntu-upgrade-linux-image-5-11-0-37-genericubuntu-upgrade-linux-image-5-11-0-37-generic-64kubuntu-upgrade-linux-image-5-11-0-37-generic-lpaeubuntu-upgrade-linux-image-5-11-0-37-lowlatencyubuntu-upgrade-linux-image-5-13-0-1014-oemubuntu-upgrade-linux-image-5-4-0-1007-ibmubuntu-upgrade-linux-image-5-4-0-1021-bluefieldubuntu-upgrade-linux-image-5-4-0-1026-gkeopubuntu-upgrade-linux-image-5-4-0-1046-raspiubuntu-upgrade-linux-image-5-4-0-1049-kvmubuntu-upgrade-linux-image-5-4-0-1055-gkeubuntu-upgrade-linux-image-5-4-0-1057-gcpubuntu-upgrade-linux-image-5-4-0-1057-oracleubuntu-upgrade-linux-image-5-4-0-1059-awsubuntu-upgrade-linux-image-5-4-0-1063-azureubuntu-upgrade-linux-image-5-4-0-90-genericubuntu-upgrade-linux-image-5-4-0-90-generic-lpaeubuntu-upgrade-linux-image-5-4-0-90-lowlatencyubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-aws-lts-20-04ubuntu-upgrade-linux-image-azureubuntu-upgrade-linux-image-azure-edgeubuntu-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-18-04ubuntu-upgrade-linux-image-generic-lpae-hwe-20-04ubuntu-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-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-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-20-04
References
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