CVE-2024-42140: riscv: kexec: Avoid deadlock in kexec crash path
First published: Tue Jul 30 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=5.15.82<5.15.163 | |
| Linux Linux kernel | >=6.0.12<6.1.98 | |
| Linux Linux kernel | >=6.2<6.6.39 | |
| Linux Linux kernel | >=6.7<6.9.9 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.112-1 6.11.9-1 6.11.10-1 |
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Reference Links
- https://git.kernel.org/stable/c/484dd545271d02d1571e1c6b62ea7df9dbe5e692
- https://git.kernel.org/stable/c/653deee48a4682ea17a05b96fb6842795ab5943c
- https://git.kernel.org/stable/c/7692c9b6baacdee378435f58f19baf0eb69e4155
- https://git.kernel.org/stable/c/bb80a7911218bbab2a69b5db7d2545643ab0073d
- https://git.kernel.org/stable/c/c562ba719df570c986caf0941fea2449150bcbc4
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-42140
- https://nvd.nist.gov/vuln/detail/CVE-2024-42140
- https://launchpad.net/bugs/cve/CVE-2024-42140
- https://security-tracker.debian.org/tracker/CVE-2024-42140
- https://ubuntu.com/security/CVE-2024-42140
- https://git.kernel.org/linus/c562ba719df570c986caf0941fea2449150bcbc4
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