Description
In the Unbreakable Enterprise Kernel (UEK), the RDS module in UEK has two setsockopt(2) options, RDS_CONN_RESET and RDS6_CONN_RESET, that are not re-entrant. A malicious local user with CAP_NET_ADMIN can use this to crash the kernel. CVSS 3.1 Base Score 5.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Oracle | Oracle Linux | Oracle Linux: 6, Oracle Linux: 7, Oracle Linux: 8, Oracle Linux: 9 | — |
| Oracle | Oracle VM | Oracle VM: 3 | — |
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.
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | kernel-uek +34 | 6.12.0-101.33.4.3.el10uek | ELSA-2025-20530, ELSA-2025-20480 |
| Oracle Linux 8 | bpftool +11 | 5.15.0-105.125.6.2.1.el9uek | ELSA-2023-12858, ELSA-2023-12798 |
| Oracle Linux 8 | kernel-uek-container +1 | 5.4.17-2136.323.8.1.el8 | ELSA-2023-12911, ELSA-2023-12858, ELSA-2023-12801 |
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-124.78.4.1.el7uek | ELSA-2023-12875, ELSA-2023-12874, ELSA-2023-12842 |
| Oracle Linux 7 | kernel-uek-container +1 | 5.4.17-2136.323.8.1.el7 | ELSA-2023-12910, ELSA-2023-12802 |
| Oracle Linux 7 | perf +5 | 4.14.35-2047.529.3.1.el7uek | ELSA-2023-12875, ELSA-2023-12874, ELSA-2023-12803 |
Advisories 15
- ELSA-2025-20530 Important: Unbreakable Enterprise kernel security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Aug 18, 2025
- WID-SEC-2023-2415 Oracle Linux: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Jul 20, 2025
- ELSA-2025-20480 Important: Unbreakable Enterprise kernel security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jul 17, 2025
- ELSA-2023-12874 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 17, 2023
- ELSA-2023-12910 Important: Unbreakable Enterprise kernel-container security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 13, 2023
- ELSA-2023-12875 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 13, 2023
- ELSA-2023-12911 Important: Unbreakable Enterprise kernel-container security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Oct 13, 2023
- ELSA-2023-12858 Important: Unbreakable Enterprise kernel security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Oct 10, 2023
- ELSA-2023-12842 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 3, 2023
- ELSA-2023-12803 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 16, 2023
- ELSA-2023-12802 Important: Unbreakable Enterprise kernel-container security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 16, 2023
- ELSA-2023-12798 Important: Unbreakable Enterprise kernel security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Sep 16, 2023
- ELSA-2023-12799 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 16, 2023
- ELSA-2023-12801 Important: Unbreakable Enterprise kernel-container security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Sep 16, 2023
- ELSA-2023-12800 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 16, 2023
References
- Oracle Advisory vendor-advisory