Description
The Linux kernel before 5.18.13 lacks a certain clear operation for the block starting symbol (.bss). This allows Xen PV guest OS users to cause a denial of service or gain privileges.
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 | 5.18.14-1 | — |
| Debian 13 | linux | 5.18.14-1 | — |
| Debian 12 | linux | 5.18.14-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | kernel-livepatch-6.1.10-15.42 | 1.0-0.amzn2023 | ALAS2023-2023-070 |
| Amazon Linux 2023 | perf +12 | 6.1.10-15.42.amzn2023 | ALAS2023-2023-070 |
| Amazon Linux 2 | kernel-livepatch-4.14.290-217.505 +1 | 1.0-0.amzn2 | ALAS2-2025-2790, ALAS2-2022-1852, ALAS2-2022-1833 |
| Amazon Linux 2 | perf +8 | 4.14.290-217.505.amzn2 | ALAS2-2025-2790, ALAS2-2022-1852, ALAS2-2022-1833 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.67.1-4 | — |
Advisories 10
- SSA-794697 SSA-794697: Vulnerabilities in the Additional GNU/Linux Subsystem of the SIMATIC S7-1500 TM MFP Before V1.1 Siemens ProductCERT · Oct 13, 2026
- NCSC-2025-0382 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · Dec 9, 2025
- SSA-202008 SSA-202008: Multiple Vulnerabilities in Ruggedcom Rox Before V2.17.0 Siemens ProductCERT · Dec 9, 2025
- ALAS2-2022-1852 Important: kernel security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Aug 26, 2025
- ALAS2-2025-2790 Important: kernel security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · May 19, 2025
- WID-SEC-2022-0865 Linux Kernel: Schwachstelle ermöglicht Privilegieneskalation BSI CERT-Bund (WID) · Mar 25, 2025
- ALAS2023-2023-070 Important: kernel security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Apr 10, 2024
- ICSA-23-166-11 Siemens SIMATIC S7-1500 TM MFP Linux Kernel CISA ICS & IT advisories · Apr 9, 2024
- WID-SEC-2023-1432 Siemens SIMATIC S7: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 22, 2023
- ALAS2-2022-1833 Moderate: kernel security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Aug 19, 2022
References
- https://sick.codes/sick-2022-128
- https://github.com/sickcodes/security/blob/master/advisories/SICK-2022-128.md
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.13
- https://github.com/torvalds/linux/commit/96e8fc5818686d4a1591bb6907e7fdb64ef29884
- https://github.com/torvalds/linux/commit/74a0032b8524ee2bd4443128c0bf9775928680b0
- https://security.netapp.com/advisory/ntap-20220901-0003/