REDHAT-BUG-2274123: Buffer Overflow
A heap based buffer overflow was found in the SDHCI device emulation of QEMU. The bug is triggered when both s->datacount and the size of s->fifobuffer are set to 0x200, leading to an out-of-bound access. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.
Upstream patch: https://patchew.org/QEMU/20240404085549.16987-1-philmd@linaro.org/
oss-fuzz bug: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=58813
Affected Software
Event History
Frequently Asked Questions
What is the severity of REDHAT-BUG-2274123?
REDHAT-BUG-2274123 is categorized as a critical vulnerability due to its potential to crash the QEMU process.
How do I fix REDHAT-BUG-2274123?
To fix REDHAT-BUG-2274123, update QEMU to the latest version that has addressed this heap-based buffer overflow.
Who is affected by REDHAT-BUG-2274123?
Users running vulnerable versions of QEMU are affected by REDHAT-BUG-2274123.
What causes the vulnerability REDHAT-BUG-2274123?
REDHAT-BUG-2274123 is caused by a heap-based buffer overflow triggered when specific parameters in the SDHCI device emulation are set incorrectly.
Can a malicious guest exploit REDHAT-BUG-2274123?
Yes, a malicious guest can exploit REDHAT-BUG-2274123 to crash the QEMU process on the host.