irqchip/gic-v2m: Prevent use after free of gicv2m_get_fwnode()
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 25 fixed, 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.
Summary
In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v2m: Prevent use after free of gicv2m_get_fwnode() With ACPI in place, gicv2m_get_fwnode() is registered with the pci subsystem as pci_msi_get_fwnode_cb(), which may get invoked at runtime during a PCI host bridge probe. But, the call back is wrongly marked as __init, causing it to be freed, while being registered with the PCI subsystem and could trigger: Unable to handle kernel paging request at virtual address ffff8000816c0400 gicv2m_get_fwnode+0x0/0x58 (P) pci_set_bus_msi_domain+0x74/0x88 pci_register_host_bridge+0x194/0x548 This is easily reproducible on a Juno board with ACPI boot. Retain the function for later use.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 4.5 and later | 5.4.294, 5.10.238, 5.15.182, 6.1.138, 6.6.89, 6.12.26, 6.14.5, 6.15 | Patch available | CNA |
- Linux VendorLinux Affected 4.5 and later Fixed in 5.4.294, 5.10.238, 5.15.182, 6.1.138, 6.6.89, 6.12.26, 6.14.5, 6.15 Patch available CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.5 to before 5.4.294; 5.5 to before 5.10.238; 5.11 to before 5.15.182; 5.16 to before 6.1.138; 6.2 to before 6.6.89; 6.7 to before 6.12.26; 6.13 to before 6.14.5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:* | 6.15 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:* | 6.15 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:* | 6.15 rc3 | Vulnerable | Linux |
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | 11.0 | Vulnerable | Debian |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.5 to before 5.4.294; 5.5 to before 5.10.238; 5.11 to before 5.15.182; 5.16 to before 6.1.138; 6.2 to before 6.6.89; 6.7 to before 6.12.26; 6.13 to before 6.14.5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:* Versions 6.15 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:* Versions 6.15 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:* Versions 6.15 rc3 Vulnerable ·Linux
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.4.294, 5.10.238, 5.15.182, 6.1.138, 6.6.89, 6.12.26, 6.14.5, 6.15
Red Hat 5 advisories
- RHSA-2026:2212 Released 2026-02-09 · Red Hat rating Moderatekernel security update
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-611.30.1.el9_7, kernel-64k-debug-devel-matched-5.14.0-611.30.1.el9_7, kernel-64k-devel-5.14.0-611.30.1.el9_7 +12
- Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-611.30.1.el9_7, kernel-64k-5.14.0-611.30.1.el9_7, kernel-64k-core-5.14.0-611.30.1.el9_7 +28
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-611.30.1.el9_7, libperf-5.14.0-611.30.1.el9_7
- Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-611.30.1.el9_7, kernel-rt-64k-5.14.0-611.30.1.el9_7, kernel-rt-64k-core-5.14.0-611.30.1.el9_7 +21
- Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-611.30.1.el9_7, kernel-rt-core-5.14.0-611.30.1.el9_7, kernel-rt-debug-5.14.0-611.30.1.el9_7 +9
- RHSA-2026:1690 Released 2026-02-02 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-124.31.1.el10_1, kernel-64k-debug-devel-matched-6.12.0-124.31.1.el10_1, kernel-64k-devel-6.12.0-124.31.1.el10_1 +12
- Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-124.31.1.el10_1, kernel-64k-6.12.0-124.31.1.el10_1, kernel-64k-core-6.12.0-124.31.1.el10_1 +29
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-124.31.1.el10_1, libperf-6.12.0-124.31.1.el10_1
- Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-124.31.1.el10_1, kernel-rt-64k-6.12.0-124.31.1.el10_1, kernel-rt-64k-core-6.12.0-124.31.1.el10_1 +21
- Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-124.31.1.el10_1, kernel-rt-core-6.12.0-124.31.1.el10_1, kernel-rt-debug-6.12.0-124.31.1.el10_1 +9
- RHSA-2026:1444 Released 2026-01-28 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder EUS (v.9.4) kernel-tools-libs-devel-5.14.0-427.108.1.el9_4, libperf-5.14.0-427.108.1.el9_4
- Red Hat Enterprise Linux AppStream EUS (v.9.4) kernel-64k-debug-devel-5.14.0-427.108.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.108.1.el9_4, kernel-64k-devel-5.14.0-427.108.1.el9_4 +11
- Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool-7.3.0-427.108.1.el9_4, kernel-5.14.0-427.108.1.el9_4, kernel-64k-5.14.0-427.108.1.el9_4 +29
- Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt-5.14.0-427.108.1.el9_4, kernel-rt-core-5.14.0-427.108.1.el9_4, kernel-rt-debug-5.14.0-427.108.1.el9_4 +9
- Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt-5.14.0-427.108.1.el9_4, kernel-rt-core-5.14.0-427.108.1.el9_4, kernel-rt-debug-5.14.0-427.108.1.el9_4 +11
Show 2 more Red Hat advisories
- RHSA-2026:1236 Released 2026-01-26 · Red Hat rating Moderatekernel security update
- Red Hat Enterprise Linux AppStream EUS (v. 10.0) kernel-64k-debug-devel-6.12.0-55.55.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.55.1.el10_0, kernel-64k-devel-6.12.0-55.55.1.el10_0 +12
- Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel-6.12.0-55.55.1.el10_0, kernel-64k-6.12.0-55.55.1.el10_0, kernel-64k-core-6.12.0-55.55.1.el10_0 +28
- Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) kernel-tools-libs-devel-6.12.0-55.55.1.el10_0, libperf-6.12.0-55.55.1.el10_0
- Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt-6.12.0-55.55.1.el10_0, kernel-rt-64k-6.12.0-55.55.1.el10_0, kernel-rt-64k-core-6.12.0-55.55.1.el10_0 +21
- Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt-6.12.0-55.55.1.el10_0, kernel-rt-core-6.12.0-55.55.1.el10_0, kernel-rt-debug-6.12.0-55.55.1.el10_0 +11
- RHSA-2026:1194 Released 2026-01-26 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder EUS (v.9.6) kernel-tools-libs-devel-5.14.0-570.81.1.el9_6, libperf-5.14.0-570.81.1.el9_6
- Red Hat Enterprise Linux AppStream EUS (v.9.6) kernel-64k-debug-devel-5.14.0-570.81.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.81.1.el9_6, kernel-64k-devel-5.14.0-570.81.1.el9_6 +12
- Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel-5.14.0-570.81.1.el9_6, kernel-64k-5.14.0-570.81.1.el9_6, kernel-64k-core-5.14.0-570.81.1.el9_6 +28
- Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt-5.14.0-570.81.1.el9_6, kernel-rt-64k-5.14.0-570.81.1.el9_6, kernel-rt-64k-core-5.14.0-570.81.1.el9_6 +21
- Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt-5.14.0-570.81.1.el9_6, kernel-rt-core-5.14.0-570.81.1.el9_6, kernel-rt-debug-5.14.0-570.81.1.el9_6 +11
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 9 | Affected | No fix planned: Will not fix |
| Red Hat CodeReady Linux Builder EUS (v.9.4) | Fixed | RHSA-2026:1444 |
| Red Hat CodeReady Linux Builder EUS (v.9.6) | Fixed | RHSA-2026:1194 |
| Red Hat Enterprise Linux AppStream (v. 10) | Fixed | RHSA-2026:1690 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2026:2212 |
| Red Hat Enterprise Linux AppStream EUS (v. 10.0) | Fixed | RHSA-2026:1236 |
| Red Hat Enterprise Linux AppStream EUS (v.9.4) | Fixed | RHSA-2026:1444 |
| Red Hat Enterprise Linux AppStream EUS (v.9.6) | Fixed | RHSA-2026:1194 |
| Red Hat Enterprise Linux BaseOS (v. 10) | Fixed | RHSA-2026:1690 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2026:2212 |
| Red Hat Enterprise Linux BaseOS EUS (v. 10.0) | Fixed | RHSA-2026:1236 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.4) | Fixed | RHSA-2026:1444 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.6) | Fixed | RHSA-2026:1194 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) | Fixed | RHSA-2026:1690 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | Fixed | RHSA-2026:2212 |
| Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) | Fixed | RHSA-2026:1236 |
| Red Hat Enterprise Linux Real Time (v. 10) | Fixed | RHSA-2026:1690 |
| Red Hat Enterprise Linux Real Time (v. 9) | Fixed | RHSA-2026:2212 |
| Red Hat Enterprise Linux Real Time EUS (v. 10.0) | Fixed | RHSA-2026:1236 |
| Red Hat Enterprise Linux Real Time EUS (v.9.4) | Fixed | RHSA-2026:1444 |
| Red Hat Enterprise Linux Real Time EUS (v.9.6) | Fixed | RHSA-2026:1194 |
| Red Hat Enterprise Linux Real Time for NFV (v. 10) | Fixed | RHSA-2026:1690 |
| Red Hat Enterprise Linux Real Time for NFV (v. 9) | Fixed | RHSA-2026:2212 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) | Fixed | RHSA-2026:1236 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) | Fixed | RHSA-2026:1444 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) | Fixed | RHSA-2026:1194 |
Not affected: 2 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2025-37819
- 2026-10-03 Alias added: GHSA-5c72-frqm-r8r4
References
Patch 8
- https://git.kernel.org/stable/c/0c241dedc43a036599757cd08f356253fa3e5014
- https://git.kernel.org/stable/c/b63de43af8d215b0499eac28b2caa4439183efc1
- https://git.kernel.org/stable/c/f95659affee301464f0d058d528d96b35b452da8
- https://git.kernel.org/stable/c/dc0d654eb4179b06d3206e4396d072108b9ba082
- https://git.kernel.org/stable/c/2f2803e4b5e4df2b08d378deaab78b1681ef9b30
- https://git.kernel.org/stable/c/3939d6f29d34cdb60e3f68b76e39e00a964a1d51
- https://git.kernel.org/stable/c/47bee0081b483b077c7560bc5358ad101f89c8ef
- https://git.kernel.org/stable/c/3318dc299b072a0511d6dfd8367f3304fb6d9827
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Sources
- CVE-2025-37819 · CVE Program
- CVE-2025-37819 · NVD
- FIRST EPSS
- GHSA-5c72-frqm-r8r4 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-37819 · Red Hat security data · CC BY 4.0
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