CVE-2023-0240
Summary
| CVE | CVE-2023-0240 |
|---|
| State | PUBLIC |
|---|
| Assigner | [email protected] |
|---|
| Source Priority | CVE Program / NVD first with legacy fallback |
|---|
| Published | 2023-01-30 14:15:00 UTC |
|---|
| Updated | 2023-11-07 03:59:00 UTC |
|---|
| Description | There is a logic error in io_uring's implementation which can be used to trigger a use-after-free vulnerability leading to privilege escalation. In the io_prep_async_work function the assumption that the last io_grab_identity call cannot return false is not true, and in this case the function will use the init_cred or the previous linked requests identity to do operations instead of using the current identity. This can lead to reference counting issues causing use-after-free. We recommend upgrading past version 5.10.161. |
|---|
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|
| Operating System |
Linux |
Linux Kernel |
All |
All |
All |
All |
References
| Reference | Source | Link | Tags |
|---|
| kernel/git/stable/linux.git - Linux kernel stable tree |
MISC |
git.kernel.org |
|
| ???????? |
MISC |
kernel.dance |
|
| io_uring: COW io_identity on mismatch · gregkh/linux@1e6fa52 · GitHub |
MISC |
github.com |
|
| CVE Program record |
CVE.ORG |
www.cve.org |
canonical |
| NVD vulnerability detail |
NVD |
nvd.nist.gov |
canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 181574 Debian Security Update for linux (CVE-2023-0240)
- 181618 Debian Security Update for linux-5.10 (DLA 3349-1)
- 673121 EulerOS Security Update for kernel (EulerOS-SA-2023-2296)
- 673157 EulerOS Security Update for kernel (EulerOS-SA-2023-2272)
