Description
A NULL pointer dereference issue was discovered in the Linux kernel in io_files_update_with_index_alloc. A local user could use this flaw to potentially crash the system causing a denial of service.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Linux kernel (io_uring) | Fixed in 5.19 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | linux-riscv | No fix yet | — |
| Ubuntu 20.04 LTS | linux-riscv +22 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.82.1-1 | — |
Advisories 1
- WID-SEC-2022-2212 Linux Kernel: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Dec 1, 2022