vulnerability
Ubuntu: (Multiple Advisories) (CVE-2023-1583): Linux kernel (OEM) vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | Mar 24, 2023 | Apr 21, 2023 | Aug 18, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
Mar 24, 2023
Added
Apr 21, 2023
Modified
Aug 18, 2025
Description
A NULL pointer dereference was found in io_file_bitmap_get in io_uring/filetable.c in the io_uring sub-component in the Linux Kernel. When fixed files are unregistered, some context information (file_alloc_{start,end} and alloc_hint) is not cleared. A subsequent request that has auto index selection enabled via IORING_FILE_INDEX_ALLOC can cause a NULL pointer dereference. An unprivileged user can use the flaw to cause a system crash.
Solutions
ubuntu-upgrade-linux-image-6-1-0-1009-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-azureubuntu-upgrade-linux-image-gcpubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-64kubuntu-upgrade-linux-image-generic-lpaeubuntu-upgrade-linux-image-ibmubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-64kubuntu-upgrade-linux-image-oem-22-04cubuntu-upgrade-linux-image-oracleubuntu-upgrade-linux-image-raspiubuntu-upgrade-linux-image-raspi-nolpaeubuntu-upgrade-linux-image-virtual
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