Description
A buffer overflow vulnerability was found in the Linux kernel Intel’s iSMT SMBus host controller driver in the way it handled the I2C_SMBUS_BLOCK_PROC_CALL case (via the ioctl I2C_SMBUS) with malicious input data. This flaw could allow a local user to crash the system.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | kernel | fixed in kernel 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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 5.18.2-1 | — |
| Debian 13 | linux | 5.18.2-1 | — |
| Debian 12 | linux | 5.18.2-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux | 5.15.0-47.51 | — |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1019.23 | — |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1019.24 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1017.23 | — |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1015.18 | — |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1002.4 | — |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1013.15 | — |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1015.20 | — |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1017.21 | — |
| Ubuntu 22.04 LTS | linux-lowlatency | 5.15.0-47.53 | — |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1007.7 | — |
| Ubuntu 22.04 LTS | linux-oem-5.17 | 5.17.0-1013.14 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1017.22 | — |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1014.16 | — |
| Ubuntu 22.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv | 5.15.0-1018.21 | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1019.23~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1019.24~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1017.23~20.04.2 | — |
| Ubuntu 20.04 LTS | linux-gke-5.15 | 5.15.0-1015.18~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-48.54~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1015.20~20.04.2 | — |
| Ubuntu 20.04 LTS | linux-oem-5.14 | 5.14.0-1044.49 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1017.22~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-riscv +22 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1018.21~20.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +13 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1020.20 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | kernel-rt +12 | 5.14.0-162.12.1.rt21.175.el9_1 | RHSA-2023:0300 |
| RHEL 9 | perf +29 | 5.14.0-162.12.1.el9_1 | RHSA-2023:0334 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | kernel-rt +11 | 5.14.0-162.12.1.rt21.175.el9_1 | ALSA-2023:0300 |
| AlmaLinux 9 | perf +26 | 5.14.0-162.12.1.el9_1 | ALSA-2023:0334 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | kernel | 5.14.0-162.12.1.el9_1.cloud.0.1 | RXSA-2023:0334, RLSA-2023:0334 |
| Rocky Linux 9 | kernel-rt | 5.14.0-162.12.1.rt21.175.el9_1 | RLSA-2023:0300 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | kernel | No fix yet | — |
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.67.1-4 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | perf +21 | 5.14.0-162.12.1.el9_1 | ELSA-2023-0334 |
Advisories 9
- ALSA-2023:0334 Important: kernel security and bug fix update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:0300 Important: kernel-rt security and bug fix update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2023:0334 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2023:0300 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RLSA-2023:0300 Important: kernel-rt security and bug fix update Rocky Linux Security Advisories · Feb 4, 2026
- RLSA-2023:0334 Important: kernel security and bug fix update Rocky Linux Security Advisories · Feb 4, 2026
- RXSA-2023:0334 Important: kernel security and bug fix update Rocky Linux Security Advisories · Feb 4, 2026
- WID-SEC-2022-1074 Linux Kernel: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Oct 10, 2023
- ELSA-2023-0334 Important: kernel security and bug fix update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jan 25, 2023