Bug 2222351 (CVE-2023-3019) - CVE-2023-3019 QEMU: e1000e: heap use-after-free in e1000e_write_packet_to_guest()
Summary: CVE-2023-3019 QEMU: e1000e: heap use-after-free in e1000e_write_packet_to_gue...
Keywords:
Status: NEW
Alias: CVE-2023-3019
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Nobody
QA Contact:
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Depends On: 2222352 2222354 2222356 2222355
Blocks: 2211976
TreeView+ depends on / blocked
 
Reported: 2023-07-12 15:15 UTC by Mauro Matteo Cascella
Modified: 2023-07-12 17:48 UTC (History)
11 users (show)

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A DMA reentrancy issue leading to a use-after-free error was found in the e1000e NIC emulation code in QEMU. This issue could allow a privileged guest user to crash the QEMU process on the host, resulting in a denial of service.
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Description Mauro Matteo Cascella 2023-07-12 15:15:22 UTC 
OSS-Fuzz reported a use-after-free issue in e1000e. This looks similar to https://gitlab.com/qemu-project/qemu/-/issues/1543. However, Alexander Bulekov confirmed that this crashes both on master and v8.0 (albeit with slightly different crash traces).

OSS-Fuzz issue: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=59243

Upstream patch:
https://lists.nongnu.org/archive/html/qemu-devel/2023-05/msg08310.html
Comment 1 Mauro Matteo Cascella 2023-07-12 15:15:42 UTC 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 2222352]
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