vulnerability
Ubuntu: (Multiple Advisories) (CVE-2023-2235): Linux kernel vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:S/C:C/I:C/A:C) | May 1, 2023 | Jun 19, 2023 | Jan 30, 2025 |
Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
May 1, 2023
Added
Jun 19, 2023
Modified
Jan 30, 2025
Description
A use-after-free vulnerability in the Linux Kernel Performance Events system can be exploited to achieve local privilege escalation.
The perf_group_detach function did not check the event's siblings' attach_state before calling add_event_to_groups(), but remove_on_exec made it possible to call list_del_event() on before detaching from their group, making it possible to use a dangling pointer causing a use-after-free vulnerability.
We recommend upgrading past commit fd0815f632c24878e325821943edccc7fde947a2.
Solution(s)
ubuntu-upgrade-linux-image-5-15-0-1025-gkeopubuntu-upgrade-linux-image-5-15-0-1030-nvidiaubuntu-upgrade-linux-image-5-15-0-1030-nvidia-lowlatencyubuntu-upgrade-linux-image-5-15-0-1035-ibmubuntu-upgrade-linux-image-5-15-0-1035-raspiubuntu-upgrade-linux-image-5-15-0-1037-intel-iotgubuntu-upgrade-linux-image-5-15-0-1039-gcpubuntu-upgrade-linux-image-5-15-0-1039-gkeubuntu-upgrade-linux-image-5-15-0-1039-kvmubuntu-upgrade-linux-image-5-15-0-1040-oracleubuntu-upgrade-linux-image-5-15-0-1041-awsubuntu-upgrade-linux-image-5-15-0-1042-awsubuntu-upgrade-linux-image-5-15-0-1043-azure-fdeubuntu-upgrade-linux-image-5-15-0-1045-azureubuntu-upgrade-linux-image-5-15-0-1045-azure-fdeubuntu-upgrade-linux-image-5-15-0-79-genericubuntu-upgrade-linux-image-5-15-0-79-generic-64kubuntu-upgrade-linux-image-5-15-0-79-generic-lpaeubuntu-upgrade-linux-image-5-15-0-79-lowlatencyubuntu-upgrade-linux-image-5-15-0-79-lowlatency-64kubuntu-upgrade-linux-image-6-0-0-1021-oemubuntu-upgrade-linux-image-6-2-0-1003-ibmubuntu-upgrade-linux-image-6-2-0-1005-awsubuntu-upgrade-linux-image-6-2-0-1005-azureubuntu-upgrade-linux-image-6-2-0-1005-lowlatencyubuntu-upgrade-linux-image-6-2-0-1005-lowlatency-64kubuntu-upgrade-linux-image-6-2-0-1005-oracleubuntu-upgrade-linux-image-6-2-0-1006-kvmubuntu-upgrade-linux-image-6-2-0-1006-raspiubuntu-upgrade-linux-image-6-2-0-1006-raspi-nolpaeubuntu-upgrade-linux-image-6-2-0-1007-gcpubuntu-upgrade-linux-image-6-2-0-23-genericubuntu-upgrade-linux-image-6-2-0-23-generic-64kubuntu-upgrade-linux-image-6-2-0-23-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-fdeubuntu-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-hwe-20-04ubuntu-upgrade-linux-image-generic-lpaeubuntu-upgrade-linux-image-generic-lpae-hwe-20-04ubuntu-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-hwe-20-04ubuntu-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-oracleubuntu-upgrade-linux-image-raspiubuntu-upgrade-linux-image-raspi-nolpaeubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-hwe-20-04
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