vulnerability
Ubuntu: (Multiple Advisories) (CVE-2023-3777): Linux kernel vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:S/C:C/I:C/A:C) | Aug 29, 2023 | Aug 31, 2023 | Mar 27, 2026 |
Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
Aug 29, 2023
Added
Aug 31, 2023
Modified
Mar 27, 2026
Description
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.
When nf_tables_delrule() is flushing table rules, it is not checked whether the chain is bound and the chain's owner rule can also release the objects in certain circumstances.
We recommend upgrading past commit 6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8.
Solutions
ubuntu-upgrade-linux-image-5-15-0-1026-gkeopubuntu-upgrade-linux-image-5-15-0-1031-nvidiaubuntu-upgrade-linux-image-5-15-0-1031-nvidia-lowlatencyubuntu-upgrade-linux-image-5-15-0-1036-ibmubuntu-upgrade-linux-image-5-15-0-1036-raspiubuntu-upgrade-linux-image-5-15-0-1038-intel-iotgubuntu-upgrade-linux-image-5-15-0-1040-gcpubuntu-upgrade-linux-image-5-15-0-1040-gkeubuntu-upgrade-linux-image-5-15-0-1040-kvmubuntu-upgrade-linux-image-5-15-0-1041-oracleubuntu-upgrade-linux-image-5-15-0-1043-awsubuntu-upgrade-linux-image-5-15-0-1045-azureubuntu-upgrade-linux-image-5-15-0-1045-azure-fdeubuntu-upgrade-linux-image-5-15-0-82-genericubuntu-upgrade-linux-image-5-15-0-82-generic-64kubuntu-upgrade-linux-image-5-15-0-82-generic-lpaeubuntu-upgrade-linux-image-5-15-0-82-lowlatencyubuntu-upgrade-linux-image-5-15-0-82-lowlatency-64kubuntu-upgrade-linux-image-6-0-0-1021-oemubuntu-upgrade-linux-image-6-1-0-1020-oemubuntu-upgrade-linux-image-6-2-0-1003-starfiveubuntu-upgrade-linux-image-6-2-0-1008-ibmubuntu-upgrade-linux-image-6-2-0-1010-awsubuntu-upgrade-linux-image-6-2-0-1010-azureubuntu-upgrade-linux-image-6-2-0-1010-oracleubuntu-upgrade-linux-image-6-2-0-1011-kvmubuntu-upgrade-linux-image-6-2-0-1011-lowlatencyubuntu-upgrade-linux-image-6-2-0-1011-lowlatency-64kubuntu-upgrade-linux-image-6-2-0-1011-raspiubuntu-upgrade-linux-image-6-2-0-1012-gcpubuntu-upgrade-linux-image-6-2-0-31-genericubuntu-upgrade-linux-image-6-2-0-31-generic-64kubuntu-upgrade-linux-image-6-2-0-31-generic-lpaeubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-aws-lts-22-04ubuntu-upgrade-linux-image-azureubuntu-upgrade-linux-image-azure-cvmubuntu-upgrade-linux-image-azure-fde-lts-22-04ubuntu-upgrade-linux-image-azure-lts-22-04ubuntu-upgrade-linux-image-gcpubuntu-upgrade-linux-image-gcp-lts-22-04ubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-64kubuntu-upgrade-linux-image-generic-64k-hwe-20-04ubuntu-upgrade-linux-image-generic-64k-hwe-22-04ubuntu-upgrade-linux-image-generic-hwe-20-04ubuntu-upgrade-linux-image-generic-hwe-22-04ubuntu-upgrade-linux-image-generic-lpaeubuntu-upgrade-linux-image-generic-lpae-hwe-20-04ubuntu-upgrade-linux-image-generic-lpae-hwe-22-04ubuntu-upgrade-linux-image-gkeubuntu-upgrade-linux-image-gke-5-15ubuntu-upgrade-linux-image-gkeopubuntu-upgrade-linux-image-gkeop-5-15ubuntu-upgrade-linux-image-ibmubuntu-upgrade-linux-image-intelubuntu-upgrade-linux-image-intel-iotgubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-64kubuntu-upgrade-linux-image-lowlatency-64k-hwe-20-04ubuntu-upgrade-linux-image-lowlatency-64k-hwe-22-04ubuntu-upgrade-linux-image-lowlatency-hwe-20-04ubuntu-upgrade-linux-image-lowlatency-hwe-22-04ubuntu-upgrade-linux-image-nvidiaubuntu-upgrade-linux-image-nvidia-lowlatencyubuntu-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-22-04bubuntu-upgrade-linux-image-oem-22-04cubuntu-upgrade-linux-image-oracleubuntu-upgrade-linux-image-oracle-lts-22-04ubuntu-upgrade-linux-image-raspiubuntu-upgrade-linux-image-raspi-nolpaeubuntu-upgrade-linux-image-starfiveubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-hwe-20-04ubuntu-upgrade-linux-image-virtual-hwe-22-04
References
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.