Description
In the Linux kernel, the following vulnerability has been resolved:
KVM: arm64: vgic-its: Drop the translation cache reference only for the erased entry
vgic_its_invalidate_cache() walks the per-ITS translation cache with
xa_for_each() and drops the cache's reference on each entry with
vgic_put_irq(). It puts the iterated pointer, though, rather than the
value returned by xa_erase().
The function is called from contexts that do not exclude one another: the
ITS command handlers hold its_lock, the GITS_CTLR write path holds
cmd_lock, and the path that clears EnableLPIs in a redistributor's
GICR_CTLR holds neither. Two or more of them can drain the same cache
concurrently, and if each one observes the same entry, erases it and then
puts it, the single reference the cache holds on that entry is dropped
more than once. The entry can then be freed while an ITE still maps it.
xa_erase() is atomic and returns the previous entry, so put only the entry
that this context actually removed. The cache reference is then dropped
exactly once per entry even when the invalidations run concurrently, and
the behavior is unchanged when only one context runs.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 6.10 | 6.12.93 |
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 | 7.0.12-1 | — |
| Debian 13 | linux | 6.12.94-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | linux | 7.0.0-27.27 | USN-8488-1 |
| Ubuntu 26.04 LTS | linux-aws +1 | 7.0.0-1008.8 | USN-8489-1, USN-8488-1 |
| Ubuntu 26.04 LTS | linux-azure | 7.0.0-1010.10 | USN-8603-1 |
| Ubuntu 26.04 LTS | linux-gcp +1 | 7.0.0-1007.7 | USN-8488-1 |
| Ubuntu 26.04 LTS | linux-ibm +1 | 7.0.0-1009.9 | USN-8603-1, USN-8488-1 |
| Ubuntu 26.04 LTS | linux-nvidia | 7.0.0-1013.13 | USN-8507-1 |
| Ubuntu 26.04 LTS | linux-raspi | 7.0.0-1014.14 | USN-8488-2 |
| Ubuntu 26.04 LTS | linux-riscv +1 | 7.0.0-27.27.1 | USN-8488-1 |
| Ubuntu 25.10 | linux | 6.17.0-40.40 | USN-8490-1 |
| Ubuntu 25.10 | linux-aws | 6.17.0-1019.19 | USN-8490-1 |
| Ubuntu 25.10 | linux-azure +1 | No fix yet | — |
| Ubuntu 25.10 | linux-gcp | 6.17.0-1020.22 | USN-8490-1 |
| Ubuntu 25.10 | linux-oracle | 6.17.0-1018.18 | USN-8490-1 |
| Ubuntu 25.10 | linux-raspi | 6.17.0-1021.21 | USN-8546-1 |
| Ubuntu 25.10 | linux-realtime | 6.17.0-1017.19 | USN-8490-2 |
| Ubuntu 25.10 | linux-riscv | 6.17.0-40.40.1 | — |
| Ubuntu 24.04 LTS | linux-aws-6.17 | 6.17.0-1019.19~24.04.1 | USN-8490-1 |
| Ubuntu 24.04 LTS | linux-azure-6.17 | 6.17.0-1021.21~24.04.1 | USN-8604-1 |
| Ubuntu 24.04 LTS | linux-azure-7.0 | 7.0.0-1014.14~24.04.1 | USN-8728-2 |
| Ubuntu 24.04 LTS | linux-azure-fde-7.0 | 7.0.0-1013.13~24.04.1 | — |
| Ubuntu 24.04 LTS | linux-gcp-6.17 | 6.17.0-1020.22~24.04.1 | USN-8490-1 |
| Ubuntu 24.04 LTS | linux-gcp-7.0 +1 | 7.0.0-1011.11~24.04.1 | USN-8728-3, USN-8728-1 |
| Ubuntu 24.04 LTS | linux-hwe-6.17 | 6.17.0-40.40~24.04.1 | USN-8545-1 |
| Ubuntu 24.04 LTS | linux-hwe-7.0 | 7.0.0-28.28~24.04.1 | USN-8569-1 |
| Ubuntu 24.04 LTS | linux-nvidia-6.17 | 6.17.0-1026.26 | USN-8508-1 |
| Ubuntu 24.04 LTS | linux-oem-6.17 | 6.17.0-1028.28 | USN-8491-1 |
| Ubuntu 24.04 LTS | linux-oracle-6.17 +1 | 6.17.0-1018.18~24.04.1 | USN-8605-1, USN-8490-1 |
| Ubuntu 24.04 LTS | linux-riscv +19 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +32 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime-6.14 | No fix yet | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime-6.17 | 6.17.0-1017.19~24.04.1 | USN-8490-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | rv +76 | 6.12.0-211.30.1.el10_2 | RHSA-2026:34911 |
| RHEL 9 | rv +75 | 5.14.0-687.22.1.el9_8 | RHSA-2026:36018 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | rv +77 | 6.12.0-55.88.1.el10_0 | RHSA-2026:39371 |
| RHEL 9.6 EUS | rv +77 | 5.14.0-570.127.1.el9_6 | RHSA-2026:38902 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | rv +74 | 6.12.0-211.28.1.el10_2 | ALSA-2026:34911, ALSA-2026:30129 |
| AlmaLinux 9 | rv +73 | 5.14.0-687.19.1.el9_8 | ALSA-2026:36018, ALSA-2026:30848 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | kernel | 5.14.0-687.22.1.el9_8 | RLSA-2026:36018 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | kernel-64kb +8 | 6.12.0-160000.35.1 | SUSE-SU-2026:22127-1 |
| SLES for SAP 16.0 | kernel-default-base | 6.12.0-160000.35.1.160000.2.16 | SUSE-SU-2026:22127-1 |
| SLES 16.0 | kernel-64kb +8 | 6.12.0-160000.35.1 | SUSE-SU-2026:22127-1, SUSE-SU-2026:22099-1 |
| SLES 16.0 | kernel-default-base | 6.12.0-160000.35.1.160000.2.16 | SUSE-SU-2026:22127-1 |
| SLE Micro 6.2 | kernel-default-base | 6.12.0-160000.35.1.160000.2.16 | SUSE-SU-2026:22112-1 |
| SLE Micro 6.2 | kernel-rt +5 | 6.12.0-160000.35.1 | SUSE-SU-2026:22117-1, SUSE-SU-2026:22112-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | kernel-source | 7.0.12-1.1 | openSUSE-SU-2026:11014-1 |
| openSUSE Leap 16.0 | kernel-default-base | 6.12.0-160000.35.1.160000.2.16 | openSUSE-SU-2026:20965-1 |
| openSUSE Leap 16.0 | kernel-rt +11 | 6.12.0-160000.35.1 | openSUSE-SU-2026:20965-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | kernel-livepatch-6.18.35-68.127 +1 | 1:1.0-0.amzn2023 | ALAS2023-2026-1894, ALAS2023-2026-1881 |
| Amazon Linux 2023 | perf6.12 +11 | 1:6.12.92-122.166.amzn2023 | ALAS2023-2026-1894 |
| Amazon Linux 2023 | perf6.18 +12 | 1:6.18.35-68.127.amzn2023 | ALAS2023-2026-1881 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | rv +29 | 6.12.0-211.34.1.el10_2 | ELSA-2026-34911 |
| Oracle Linux 9 | kernel-uek +34 | 6.12.0-204.92.4.3.el10uek | ELSA-2026-500150, ELSA-2026-500004 |
| Oracle Linux 9 | rv +28 | 5.14.0-687.22.1.el9_8 | ELSA-2026-36018 |
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
-
suominen/itscape ★ 0 · Jul 8, 2026
Tracking ITScape (CVE-2026-46316), the KVM/arm64 guest-to-host escape
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 39
- WID-SEC-2026-1870 Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Nov 12, 2026
- USN-8728-1 linux-gcp-7.0 vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
- USN-8728-2 linux-azure-7.0 vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
- USN-8728-3 linux-oracle-7.0 vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
- USN-8603-1 linux-azure, linux-azure-fde vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
- USN-8488-1 linux, linux-aws, linux-gcp, linux-ibm, linux-oracle, linux-realtime vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8569-1 linux-hwe-7.0 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8604-1 linux-azure-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8488-2 linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8489-1 linux-oem-7.0 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8507-1 linux-nvidia vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8508-1 linux-nvidia-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8546-1 linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8490-2 linux-realtime, linux-realtime-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8491-1 linux-oem-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8545-1 linux-hwe-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8490-1 linux, linux-aws, linux-aws-6.17, linux-gcp, linux-gcp-6.17, linux-oracle, linux-oracle-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- ALSA-2026:36018 Important: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:30848 Important: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:34911 Important: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:30129 Important: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2026:36018 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 18, 2026
- USN-8605-1 linux-azure-fde-6.17 vulnerabilities Ubuntu Security Notices (USN) · Oct 17, 2026
- RHSA-2026:39371 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:38902 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:34911 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- ALAS2023-2026-1881 Important: kernel6.18 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Aug 12, 2026
- ELSA-2026-34911 Important: kernel security, bug fix, and enhancement update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Aug 10, 2026
- ELSA-2026-500150 Important: Unbreakable Enterprise kernel security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Aug 8, 2026
- ALAS2023-2026-1894 Important: kernel6.12 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Aug 6, 2026
- ELSA-2026-500004 Important: Unbreakable Enterprise kernel security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jul 15, 2026
- RLSA-2026:36018 Important: kernel security, bug fix, and enhancement update Rocky Linux Security Advisories · Jul 11, 2026
- SUSE-SU-2026:22117-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Jul 9, 2026
- ELSA-2026-36018 Important: kernel security, bug fix, and enhancement update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jul 8, 2026
- openSUSE-SU-2026:20965-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Jun 24, 2026
- SUSE-SU-2026:22127-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Jun 17, 2026
- SUSE-SU-2026:22112-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Jun 17, 2026
- SUSE-SU-2026:22099-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Jun 17, 2026
- openSUSE-SU-2026:11014-1 kernel-devel-7.0.12-1.1 on GA media SUSE / openSUSE Security Updates · Jun 13, 2026