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Ubuntu 22.04: USN-6954-1 Critical: QEMU Denial Of Service Issues

ubuntu
Calendar Grey August 13, 2024
Dist Ubuntu Esm H88
Multiple vulnerabilities addressed in QEMU for Ubuntu 22.04, notably including denial of service and data exposure mitigations.
Several security issues were fixed in QEMU.

Summary

Several security issues were fixed in QEMU.

Software Description:

- qemu: Machine emulator and virtualizer

Details:

Markus Frank and Fiona Ebner discovered that QEMU did not properly

handle certain memory operations, leading to a NULL pointer dereference.

An authenticated user could potentially use this issue to cause a denial

of service. (CVE-2023-6683)

Xiao Lei discovered that QEMU did not properly handle certain memory

operations when specific features were enabled, which could lead to a

stack overflow. An attacker could potentially use this issue to leak

sensitive information. (CVE-2023-6693)

It was discovered that QEMU had an integer underflow vulnerability in

the TI command, which would result in a buffer overflow. An attacker

could potentially use this issue to cause a denial of service.

(CVE-2024-24474)

Topics%20covered

Topics Covered

security advisory denial of service information leak buffer overflow Ubuntu memory issue QEMU

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS
   qemu-system                     1:6.2+dfsg-2ubuntu6.22
   qemu-system-arm                 1:6.2+dfsg-2ubuntu6.22
   qemu-system-mips                1:6.2+dfsg-2ubuntu6.22
   qemu-system-misc                1:6.2+dfsg-2ubuntu6.22
   qemu-system-ppc                 1:6.2+dfsg-2ubuntu6.22
   qemu-system-s390x               1:6.2+dfsg-2ubuntu6.22
   qemu-system-sparc               1:6.2+dfsg-2ubuntu6.22
   qemu-system-x86-xen             1:6.2+dfsg-2ubuntu6.22

After a standard system update you need to restart all QEMU virtual
machines to make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-6954-1

CVE-2023-6683, CVE-2023-6693, CVE-2024-24474

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6954-1

Topics%20covered

Topics Covered

security advisory denial of service information leak buffer overflow Ubuntu memory issue QEMU

Package Information

https://launchpad.net/ubuntu/+source/qemu/1:6.2+dfsg-2ubuntu6.22

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