Vulnerability · Published Jan 25, 2023 · Assigned by redhat
CVE-2023-0468
Medium 4.7
In plain English
A medium-severity use-after-free in Kernel. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)4.7Medium
Exploit odds (30 days)0.3%top 79.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A use-after-free flaw was found in io_uring/poll.c in io_poll_check_events in the io_uring subcomponent in the Linux Kernel due to a race condition of poll_refs. This flaw may cause a NULL pointer dereference.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | linux | 6.0.12-1 | DEBIAN-CVE-2023-0468 |
| Debian:13 | linux | 6.0.12-1 | DEBIAN-CVE-2023-0468 |
| Debian:14 | linux | 6.0.12-1 | DEBIAN-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux | 5.15.0-67.74 | USN-5912-1 |
| Ubuntu:22.04:LTS | linux | 5.15.0-67.74 | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1031.35 | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1031.35 | USN-5912-1 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1034.41 | USN-5912-1 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1034.41 | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | 5.19.0-1023.24~22.04.1 | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1034.41.1 | USN-5912-1 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1034.41.1 | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1030.37 | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1030.37 | USN-5912-1 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1028.33 | USN-5912-1 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1028.33 | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1016.21 | USN-5938-1 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1016.21 | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | 5.19.0-40.41~22.04.1 | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | 5.19.0-40.41~22.04.1 | USN-6024-1 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1026.29 | USN-5935-1 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1026.29 | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1026.31 | USN-5962-1 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1026.31 | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1029.34 | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1029.34 | USN-5941-1 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-67.74 | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-67.74 | USN-5912-1 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | 5.19.0-1022.23~22.04.1 | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1023.23 | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | 5.17.0-1031.32 | USN-6071-1 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | 5.17.0-1031.32 | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | 6.0.0-1015.15 | USN-6072-1 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | 6.0.0-1015.15 | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1030.36 | USN-5912-1 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1030.36 | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1025.27 | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1025.27 | USN-5935-1 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2023-0468 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2023-0468 |
Affected products (as reported)
Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H