Description
An issue was discovered in the Linux kernel before 6.5.9, exploitable by local users with userspace access to MMIO registers. Incorrect access checking in the #VC handler and instruction emulation of the SEV-ES emulation of MMIO accesses could lead to arbitrary write access to kernel memory (and thus privilege escalation). This depends on a race condition through which userspace can replace an instruction before the #VC handler reads it.
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 | 6.5.10-1 | — |
| Debian 13 | linux | 6.5.10-1 | — |
| Debian 12 | linux | 6.1.64-1 | — |
| Debian 11 | linux | 5.10.205-2 | DSA-5594-1 |
| Debian 10 | linux-5.10 | 5.10.205-2~deb10u1 | DLA-3711-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1035.37 | — |
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-94.104 | USN-6626-2, USN-6626-1 |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1053.58 | USN-6626-1 |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1056.64 | USN-6626-3 |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1056.64.1 | USN-6626-3 |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1051.59 | USN-6626-1 |
| Ubuntu 22.04 LTS | linux-gke +1 | 5.15.0-1050.55 | USN-6626-1 |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1036.42 | USN-6626-1 |
| Ubuntu 22.04 LTS | linux-hwe-6.5 | 6.5.0-17.17~22.04.1 | USN-6624-1 |
| Ubuntu 22.04 LTS | linux-ibm +1 | 5.15.0-1046.49 | USN-6626-2, USN-6626-1 |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1047.53 | USN-6628-1 |
| Ubuntu 22.04 LTS | linux-lowlatency-hwe-6.5 | 6.5.0-17.17.1.1.1~22.04.1 | USN-6624-1 |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1044.44 | USN-6626-1 |
| Ubuntu 22.04 LTS | linux-nvidia-6.5 | 6.5.0-1014.14 | — |
| Ubuntu 22.04 LTS | linux-nvidia-tegra | 5.15.0-1022.22 | — |
| Ubuntu 22.04 LTS | linux-nvidia-tegra-igx | 5.15.0-1009.9 | — |
| Ubuntu 22.04 LTS | linux-oem-6.1 | 6.1.0-1027.27 | USN-6533-1 |
| Ubuntu 22.04 LTS | linux-oem-6.5 | 6.5.0-1014.15 | USN-6624-1 |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1051.57 | USN-6626-1 |
| Ubuntu 22.04 LTS | linux-riscv +24 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-xilinx-zynqmp | 5.15.0-1027.31 | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1053.58~20.04.1 | USN-6626-1 |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1056.64~20.04.1 | USN-6626-3 |
| Ubuntu 20.04 LTS | linux-azure-fde-5.15 | 5.15.0-1056.64~20.04.1.1 | USN-6626-3 |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1051.59~20.04.1 | USN-6626-1 |
| Ubuntu 20.04 LTS | linux-gke +26 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gkeop-5.15 | 5.15.0-1036.42~20.04.1 | USN-6626-1 |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-94.104~20.04.1 | USN-6626-1 |
| Ubuntu 20.04 LTS | linux-ibm-5.15 | 5.15.0-1046.49~20.04.1 | USN-6626-1 |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1048.54~20.04.1 | USN-6628-2 |
| Ubuntu 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1022.22~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1051.57~20.04.1 | USN-6626-1 |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1049.53~20.04.2 | — |
| Ubuntu 18.04 LTS | linux-gcp +13 | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1046.48 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1054.60 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-aws-fips | 5.15.0-1053.58+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-fips | 5.15.0-94.104+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-gcp-fips | 5.15.0-1055.63+fips2 | — |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-fips +3 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | bpftool | 7.2.0-362.18.1.el9_3 | RHSA-2024:0461 |
| RHEL 9 | rv +64 | 5.14.0-362.18.1.el9_3 | RHSA-2024:0461 |
| RHEL 8 | kernel-rt +12 | 4.18.0-513.18.1.rt7.320.el8_9 | RHSA-2024:0881 |
| RHEL 8 | perf +26 | 4.18.0-513.18.1.el8_9 | RHSA-2024:0897 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhev Hypervisor 4 | perf +2 | 4.18.0-372.91.1.el8_6 | RHSA-2024:0724 |
| RHEL 9.2 EUS | bpftool | 7.0.0-284.48.1.el9_2 | RHSA-2024:0448 |
| RHEL 9.2 EUS | kernel-rt +14 | 5.14.0-284.48.1.rt14.333.el9_2 | RHSA-2024:0439 |
| RHEL 9.2 EUS | perf +48 | 5.14.0-284.48.1.el9_2 | RHSA-2024:0448 |
| RHEL 9.0 EUS | kernel-rt +12 | 5.14.0-70.85.1.rt21.156.el9_0 | RHSA-2024:0431 |
| RHEL 9.0 EUS | perf +29 | 5.14.0-70.85.1.el9_0 | RHSA-2024:0432 |
| RHEL 8.8 EUS | perf +26 | 4.18.0-477.43.1.el8_8 | RHSA-2024:0575 |
| RHEL 8.6 EUS | perf +26 | 4.18.0-372.91.1.el8_6 | RHSA-2024:0724 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | perf +23 | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | kernel-64kb +6 | 5.14.21-150500.55.36.1 | SUSE-SU-2023:4375-1 |
| SLES 15 SP5 | kernel-azure +2 | 5.14.21-150500.33.23.1 | SUSE-SU-2023:4414-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.36.1.150500.6.15.3 | SUSE-SU-2023:4375-1 |
| SLES 15 SP4 | kernel-azure +2 | 5.14.21-150400.14.72.1 | SUSE-SU-2023:4345-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 5.5 | kernel-default | 5.14.21-150500.55.36.1 | SUSE-SU-2023:4375-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.36.1.150500.6.15.3 | SUSE-SU-2023:4375-1 |
| SLE Micro 5.5 | kernel-rt | 5.14.21-150500.13.27.2 | SUSE-SU-2023:4732-1 |
| SLE Micro 5.4 | kernel-rt | 5.14.21-150400.15.59.1 | SUSE-SU-2023:4351-1 |
| SLE Micro 5.3 | kernel-rt | 5.14.21-150400.15.59.1 | SUSE-SU-2023:4351-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.36.1 | SUSE-SU-2023:4375-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5-RT_Update_1 | 8-150500.2.2 | SUSE-SU-2024:0995-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5-RT_Update_5 | 6-150500.2.2 | SUSE-SU-2024:0986-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5-RT_Update_8 | 1-150500.11.3.2 | SUSE-SU-2023:4732-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_0 +1 | 9-150500.6.2 | SUSE-SU-2024:1097-1, SUSE-SU-2024:1039-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_2 | 8-150500.2.3 | SUSE-SU-2024:1023-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_5 | 6-150500.2.3 | SUSE-SU-2024:1045-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_7 | 1-150500.11.5.1 | SUSE-SU-2023:4375-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4-RT_Update_15 | 1-150400.1.3.1 | SUSE-SU-2023:4351-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_11 | 11-150400.2.3 | SUSE-SU-2024:1063-1 |
| SUSE Real Time Module 15 SP5 | kernel-rt +2 | 5.14.21-150500.13.27.2 | SUSE-SU-2023:4732-1 |
| SUSE Real Time Module 15 SP5 | kernel-syms-rt | 5.14.21-150500.13.27.1 | SUSE-SU-2023:4732-1 |
| SUSE Real Time Module 15 SP4 | kernel-rt +3 | 5.14.21-150400.15.59.1 | SUSE-SU-2023:4351-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | kernel-source | 6.6.1-1.1 | openSUSE-SU-2024:13704-1, openSUSE-SU-2024:13405-1 |
| openSUSE Leap 15.5 | dtb-aarch64 +10 | 5.14.21-150500.55.36.1 | SUSE-SU-2023:4375-1 |
| openSUSE Leap 15.5 | kernel-azure +2 | 5.14.21-150500.33.23.1 | SUSE-SU-2023:4414-1 |
| openSUSE Leap 15.5 | kernel-default-base | 5.14.21-150500.55.36.1.150500.6.15.3 | SUSE-SU-2023:4375-1 |
| openSUSE Leap 15.5 | kernel-rt +2 | 5.14.21-150500.13.27.2 | SUSE-SU-2023:4732-1 |
| openSUSE Leap 15.5 | kernel-syms-rt | 5.14.21-150500.13.27.1 | SUSE-SU-2023:4732-1 |
| openSUSE Leap 15.4 | kernel-azure +2 | 5.14.21-150400.14.72.1 | SUSE-SU-2023:4345-1 |
| openSUSE Leap 15.4 | kernel-rt +3 | 5.14.21-150400.15.59.1 | SUSE-SU-2023:4351-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.4 | kernel-rt | 5.14.21-150400.15.59.1 | SUSE-SU-2023:4351-1 |
| openSUSE Leap Micro 5.3 | kernel-rt | 5.14.21-150400.15.59.1 | SUSE-SU-2023:4351-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | kernel-livepatch-6.1.61-85.141 | 1.0-0.amzn2023 | ALAS2023-2023-430 |
| Amazon Linux 2023 | perf +13 | 6.1.61-85.141.amzn2023 | ALAS2023-2023-430 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | hyperv-daemons | 6.6.29.1-1 | — |
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.137.1-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | bpftool | 7.2.0-362.18.0.1.el9_3 | ELSA-2024-12094, ELSA-2024-0461 |
| Oracle Linux 9 | rv +25 | 5.14.0-362.18.0.1.el9_3 | ELSA-2024-12094, ELSA-2024-0461 |
| Oracle Linux 8 | kernel-uek +12 | 5.15.0-203.146.5.1.el9uek | ELSA-2024-12159 |
| Oracle Linux 8 | perf +19 | 4.18.0-513.18.0.2.el8_9 | ELSA-2024-12187, ELSA-2024-12159, ELSA-2024-0897 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
-
Freax13/cve-2023-46813-poc ★ 8 · May 29, 2023
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 41
- ALSA-2024:0897 Important: kernel security update AlmaLinux Security Advisories · Oct 29, 2026
- USN-6626-1 linux, linux-aws, linux-aws-5.15, linux-gcp, linux-gcp-5.15, linux-gke, linux-gkeop, linux-gkeop-5.15, linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-kvm, linux-lowlatency-hwe-5.15, linux-nvidia, linux-oracle, linux-oracle-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6626-3 linux-azure, linux-azure-5.15, linux-azure-fde, linux-azure-fde-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6628-1 linux-intel-iotg vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6628-2 linux-intel-iotg-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6626-2 linux-lowlatency, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6624-1 linux, linux-aws, linux-gcp, linux-hwe-6.5, linux-laptop, linux-lowlatency, linux-lowlatency-hwe-6.5, linux-oem-6.5, linux-oracle, linux-raspi, linux-starfive vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- USN-6533-1 linux-oem-6.1 vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- RHSA-2024:0575 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2024:0432 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2024:0431 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2024:0897 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2024:0881 Red Hat Security Advisory: kernel-rt security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2024:0724 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2024:0461 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2024:0448 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2024:0439 Red Hat Security Advisory: kernel-rt security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- DSA-5594-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3711-1 linux-5.10 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- ALAS2023-2023-430 Important: kernel security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Feb 8, 2026
- SUSE-SU-2024:1039-1 Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP5) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:1045-1 Security update for the Linux Kernel (Live Patch 5 for SLE 15 SP5) SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13704-1 kernel-devel-longterm-6.6.17-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4732-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:1097-1 Security update for the Linux Kernel RT (Live Patch 0 for SLE 15 SP5) SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13405-1 kernel-devel-6.6.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:0986-1 Security update for the Linux Kernel RT (Live Patch 5 for SLE 15 SP5) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4345-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4351-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4375-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:1023-1 Security update for the Linux Kernel (Live Patch 2 for SLE 15 SP5) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:0995-1 Security update for the Linux Kernel RT (Live Patch 1 for SLE 15 SP5) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:1063-1 Security update for the Linux Kernel (Live Patch 11 for SLE 15 SP4) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4414-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-1086 IBM QRadar SIEM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 19, 2025
- WID-SEC-2023-2760 Linux Kernel: Schwachstelle ermöglicht Privilegieneskalation BSI CERT-Bund (WID) · Jul 17, 2024
- ELSA-2024-0461 Important: kernel security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Mar 7, 2024
- ELSA-2024-0897 Important: kernel security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Mar 6, 2024
- ELSA-2024-12187 Important: kernel security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Feb 29, 2024
- ELSA-2024-12159 Important: Unbreakable Enterprise kernel security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Feb 13, 2024
- ELSA-2024-12094 Important: kernel security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jan 26, 2024
References
- https://bugzilla.suse.com/show_bug.cgi?id=1212649
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=63e44bc52047f182601e7817da969a105aa1f721
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b9cb9c45583b911e0db71d09caa6b56469eb2bdf
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a37cd2a59d0cb270b1bba568fd3a3b8668b9d3ba
- https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.9
- [debian-lts-announce] 20240111 [SECURITY] [DLA 3711-1] linux-5.10 security update mailing-list