Description
A use-after-free flaw was found in the Linux kernel’s io_uring subsystem in the way a user sets up a ring with IORING_SETUP_IOPOLL with more than one task completing submissions on this ring. This flaw allows a local user to crash or escalate their privileges on the system.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | kernel | kernel v5.10 and v5.11 | — |
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 5.14.6-1 | — |
| Debian 13 | linux | 5.14.6-1 | — |
| Debian 12 | linux | 5.14.6-1 | — |
| Debian 11 | linux | 5.10.120-1 | DSA-5161-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | linux-riscv +16 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +12 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | kernel-uek +4 | 5.4.17-2136.307.3.4.el8uek | ELSA-2022-9425 |
| Oracle Linux 7 | kernel-uek-container +1 | 5.4.17-2136.307.3.4.el8 | ELSA-2022-9426 |
| Oracle Linux 7 | perf +3 | 5.4.17-2136.307.3.4.el7uek | ELSA-2022-9425 |
Advisories 5
- DSA-5161-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2022-0887 Android Patchday August 2022 BSI CERT-Bund (WID) · Sep 29, 2024
- WID-SEC-2022-0016 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 24, 2024
- ELSA-2022-9426 Important: Unbreakable Enterprise kernel-container security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 24, 2022
- ELSA-2022-9425 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 24, 2022