Bug 1220062 (CVE-2024-26327) - VUL-0: CVE-2024-26327: qemu: buffer overflow via invalid SR/IOV NumVFs value
Summary: VUL-0: CVE-2024-26327: qemu: buffer overflow via invalid SR/IOV NumVFs value
Status: NEW
Alias: CVE-2024-26327
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P3 - Medium : Normal
Target Milestone: ---
Assignee: Dario Faggioli
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/394490/
Whiteboard: CVSSv3.1:SUSE:CVE-2024-26327:8.2:(AV:...
Keywords:
Depends on:
Blocks:
 
Reported: 2024-02-19 09:18 UTC by SMASH SMASH
Modified: 2024-04-03 16:30 UTC (History)
2 users (show)

See Also:
Found By: Security Response Team
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description SMASH SMASH 2024-02-19 09:18:42 UTC 
An issue was discovered in QEMU 7.1.0 through 8.2.1. register_vfs in hw/pci/pcie_sriov.c mishandles the situation where a guest writes NumVFs greater than TotalVFs, leading to a buffer overflow in VF implementations.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-26327
https://www.cve.org/CVERecord?id=CVE-2024-26327
https://lore.kernel.org/all/20240214-reuse-v4-5-89ad093a07f4%40daynix.com/
Comment 1 Carlos López 2024-02-19 09:21:35 UTC 
Relevant for:
 - SUSE:SLE-15-SP5:Update/qemu
 - SUSE:ALP:Source:Standard:1.0/qemu
 - openSUSE:Factory/qemu

No patch merged yet.
Comment 2 Dario Faggioli 2024-03-15 15:01:51 UTC 
(In reply to Carlos López from comment #1)
> Relevant for:
>  - SUSE:SLE-15-SP5:Update/qemu
>  - SUSE:ALP:Source:Standard:1.0/qemu
>  - openSUSE:Factory/qemu
> 
> No patch merged yet.
>
I think it's this commit, isn't it?

https://gitlab.com/qemu-project/qemu/-/commit/6081b4243cd64dff1b2cf5b0c215c71e9d7e753b
Comment 3 Carlos López 2024-03-15 15:04:46 UTC 
(In reply to Dario Faggioli from comment #2)
> I think it's this commit, isn't it?
> 
> https://gitlab.com/qemu-project/qemu/-/commit/
> 6081b4243cd64dff1b2cf5b0c215c71e9d7e753b

Yep, that's it
Comment 6 Maintenance Automation 2024-04-03 16:30:10 UTC 
SUSE-SU-2024:1103-1: An update that solves five vulnerabilities, contains two features and has one security fix can now be installed.

Category: security (important)
Bug References: 1205316, 1209554, 1218484, 1220062, 1220065, 1220134
CVE References: CVE-2023-1544, CVE-2023-6693, CVE-2024-24474, CVE-2024-26327, CVE-2024-26328
Jira References: PED-7366, PED-8113
Maintenance Incident: [SUSE:Maintenance:33006](https://smelt.suse.de/incident/33006/)
Sources used:
SUSE Package Hub 15 15-SP5 (src):
 qemu-7.1.0-150500.49.12.1
Server Applications Module 15-SP5 (src):
 qemu-7.1.0-150500.49.12.1
openSUSE Leap 15.5 (src):
 qemu-linux-user-7.1.0-150500.49.12.1, qemu-7.1.0-150500.49.12.1
SUSE Linux Enterprise Micro 5.5 (src):
 qemu-7.1.0-150500.49.12.1
Basesystem Module 15-SP5 (src):
 qemu-7.1.0-150500.49.12.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.