| Title | CVE-2021-3392 - Denial of Service in QEMU virtualisation |
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| Description | While processing SCSI i/o requests in mptsas_process_scsi_io_request(),
the Megaraid emulator appends new MPTSASRequest object 'req' to
the 's->pending' queue. In case of an error, this same object gets
dequeued in mptsas_free_request() only if SCSIRequest object
'req->sreq' is initialised. This may lead to a use-after-free issue.
Unconditionally dequeue 'req' object from 's->pending' to avoid it.
Source:
https://bugs.launchpad.net/qemu/+bug/1914236
https://lists.gnu.org/archive/html/qemu-devel/2021-02/msg00488.html |
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| Source | ⚠️ https://bugs.launchpad.net/qemu/+bug/1914236 |
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| User | CSieberg (UID 13359) |
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| Submission | 02/08/2021 11:47 (5 years ago) |
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| Moderation | 02/08/2021 13:08 (1 hour later) |
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| Status | Accepted |
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| VulDB entry | 169365 [QEMU 5.2.0 SCSI IO Request mptsas.c mptsas_process_scsi_io_request use after free] |
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| Points | 20 |
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