riscv: kexec: Avoid deadlock in kexec crash path
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-667 and the CVSS impact.
Summary
In the Linux kernel, the following vulnerability has been resolved: riscv: kexec: Avoid deadlock in kexec crash path If the kexec crash code is called in the interrupt context, the machine_kexec_mask_interrupts() function will trigger a deadlock while trying to acquire the irqdesc spinlock and then deactivate irqchip in irq_set_irqchip_state() function. Unlike arm64, riscv only requires irq_eoi handler to complete EOI and keeping irq_set_irqchip_state() will only leave this possible deadlock without any use. So we simply remove it.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
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 | 5.15.82 to before 5.15.163; 6.0.12 to before 6.1 | 5.15.163, 6.1 | Patch available | CNA |
| Linux | Linux | 6.1 and later | 5.15.163, 6.1.98, 6.6.39, 6.9.9, 6.10 | Patch available | CNA |
- Linux VendorLinux Affected 5.15.82 to before 5.15.163; 6.0.12 to before 6.1 Fixed in 5.15.163, 6.1 Patch available CNA
- Linux VendorLinux Affected 6.1 and later Fixed in 5.15.163, 6.1.98, 6.6.39, 6.9.9, 6.10 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.15.82 to before 5.15.163; 6.0.12 to before 6.1.98; 6.2 to before 6.6.39; 6.7 to before 6.9.9 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.15.82 to before 5.15.163; 6.0.12 to before 6.1.98; 6.2 to before 6.6.39; 6.7 to before 6.9.9 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.15.163, 6.1
- Fix · CNA Linux (Linux) Fixed in 5.15.163, 6.1.98, 6.6.39, 6.9.9, 6.10
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2024-42140
- 2026-10-03 Alias added: GHSA-2j45-xr49-x8qc
References
Patch 5
- https://git.kernel.org/stable/c/bb80a7911218bbab2a69b5db7d2545643ab0073d
- https://git.kernel.org/stable/c/653deee48a4682ea17a05b96fb6842795ab5943c
- https://git.kernel.org/stable/c/7692c9b6baacdee378435f58f19baf0eb69e4155
- https://git.kernel.org/stable/c/484dd545271d02d1571e1c6b62ea7df9dbe5e692
- https://git.kernel.org/stable/c/c562ba719df570c986caf0941fea2449150bcbc4
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- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2024-42140 · CVE Program
- CVE-2024-42140 · NVD
- FIRST EPSS
- GHSA-2j45-xr49-x8qc · GitHub Advisory Database · CC BY 4.0
- CVE-2024-42140 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences