CVE-2024-27437
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
vfio/pci: Disable auto-enable of exclusive INTx IRQ
Currently for devices requiring masking at the irqchip for INTx, ie. devices without DisINTx support, the IRQ is enabled in request_irq() and subsequently disabled as necessary to align with the masked status flag. This presents a window where the interrupt could fire between these events, resulting in the IRQ incrementing the disable depth twice. This would be unrecoverable for a user since the masked flag prevents nested enables through vfio.
Instead, invert the logic using IRQF_NO_AUTOEN such that exclusive INTx is never auto-enabled, then unmask as required.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 < 26389925d6c2126fb777821a0a983adca7ee6351 | affected |
| Linux | Linux | 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 < 561d5e1998d58b54ce2bbbb3e843b669aa0b3db5 | affected |
| Linux | Linux | 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 < b7a2f0955ffceffadfe098b40b50307431f45438 | affected |
| Linux | Linux | 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 < 139dfcc4d723ab13469881200c7d80f49d776060 | affected |
| Linux | Linux | 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 < 2a4a666c45107206605b7b5bc20545f8aabc4fa2 | affected |
| Linux | Linux | 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 < 3b3491ad0f80d913e7d255941d4470f4a4d9bfda | affected |
| Linux | Linux | 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 < bf0bc84a20e6109ab07d5dc072067bd01eb931ec | affected |
| Linux | Linux | 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 < fe9a7082684eb059b925c535682e68c34d487d43 | affected |
| Linux | Linux | 3.6 | affected |
| Linux | Linux | 0 < 3.6 | unaffected |
| Linux | Linux | 5.4.274 <= 5.4.* | unaffected |
| Linux | Linux | 5.10.215 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.154 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.84 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.24 <= 6.6.* | unaffected |
| Linux | Linux | 6.7.12 <= 6.7.* | unaffected |
| Linux | Linux | 6.8.3 <= 6.8.* | unaffected |
| Linux | Linux | 6.9 <= * | unaffected |
Weaknesses
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
CVE Program Container
Additional References
- https://git.kernel.org/stable/c/26389925d6c2126fb777821a0a983adca7ee6351
- https://git.kernel.org/stable/c/561d5e1998d58b54ce2bbbb3e843b669aa0b3db5
- https://git.kernel.org/stable/c/b7a2f0955ffceffadfe098b40b50307431f45438
- https://git.kernel.org/stable/c/139dfcc4d723ab13469881200c7d80f49d776060
- https://git.kernel.org/stable/c/2a4a666c45107206605b7b5bc20545f8aabc4fa2
- https://git.kernel.org/stable/c/3b3491ad0f80d913e7d255941d4470f4a4d9bfda
- https://git.kernel.org/stable/c/bf0bc84a20e6109ab07d5dc072067bd01eb931ec
- https://git.kernel.org/stable/c/fe9a7082684eb059b925c535682e68c34d487d43
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
Additional References
References
- https://git.kernel.org/stable/c/26389925d6c2126fb777821a0a983adca7ee6351
- https://git.kernel.org/stable/c/561d5e1998d58b54ce2bbbb3e843b669aa0b3db5
- https://git.kernel.org/stable/c/b7a2f0955ffceffadfe098b40b50307431f45438
- https://git.kernel.org/stable/c/139dfcc4d723ab13469881200c7d80f49d776060
- https://git.kernel.org/stable/c/2a4a666c45107206605b7b5bc20545f8aabc4fa2
- https://git.kernel.org/stable/c/3b3491ad0f80d913e7d255941d4470f4a4d9bfda
- https://git.kernel.org/stable/c/bf0bc84a20e6109ab07d5dc072067bd01eb931ec
- https://git.kernel.org/stable/c/fe9a7082684eb059b925c535682e68c34d487d43
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