# CVE-2026-63318: qemu vulnerability

CVE-2026-63318 is fixed in 12 products on 1 platform, first by DEBIAN-CVE-2026-63318, released August 29, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-63318
- Priority: Routine
- CVSS: 6.5 (IMPORTANT)
- EPSS: n/a
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 14, 2026

## Description

hw/9pfs: fix O_TRUNC bypass on read-only export (Christian Schoenebeck) [Orabug: 39804678]

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | qemu Debian 13.5 (trixie) | 1:10.0.13+ds-0+deb13u1 | [DEBIAN-CVE-2026-63318](https://patchblox.com/security/data/fix/linux/debian-cve-2026-63318.md) | Aug 29, 2026 |
| Linux | qemu Debian 14 | 1:11.1.0+ds-1 | [DEBIAN-CVE-2026-63318](https://patchblox.com/security/data/fix/linux/debian-cve-2026-63318.md) | Aug 29, 2026 |
| Linux | qemu-guest-agent ol 9 | 31:7.2.0-43.el9 | [ELSA-2026-500245](https://patchblox.com/security/data/fix/linux/elsa-2026-500245.md) | Sep 3, 2026 |
| Linux | qemu-img ol 9 | 31:7.2.0-43.el9 | [ELSA-2026-500245](https://patchblox.com/security/data/fix/linux/elsa-2026-500245.md) | Sep 3, 2026 |
| Linux | qemu-kvm ol 9 | 31:7.2.0-43.el9 | [ELSA-2026-500245](https://patchblox.com/security/data/fix/linux/elsa-2026-500245.md) | Sep 3, 2026 |
| Linux | qemu-kvm-block-curl ol 9 | 31:7.2.0-43.el9 | [ELSA-2026-500245](https://patchblox.com/security/data/fix/linux/elsa-2026-500245.md) | Sep 3, 2026 |
| Linux | qemu-kvm-block-iscsi ol 9 | 31:7.2.0-43.el9 | [ELSA-2026-500245](https://patchblox.com/security/data/fix/linux/elsa-2026-500245.md) | Sep 3, 2026 |
| Linux | qemu-kvm-block-rbd ol 9 | 31:7.2.0-43.el9 | [ELSA-2026-500245](https://patchblox.com/security/data/fix/linux/elsa-2026-500245.md) | Sep 3, 2026 |
| Linux | qemu-kvm-block-ssh ol 9 | 31:7.2.0-43.el9 | [ELSA-2026-500245](https://patchblox.com/security/data/fix/linux/elsa-2026-500245.md) | Sep 3, 2026 |
| Linux | qemu-kvm-common ol 9 | 31:7.2.0-43.el9 | [ELSA-2026-500245](https://patchblox.com/security/data/fix/linux/elsa-2026-500245.md) | Sep 3, 2026 |
| Linux | qemu-kvm-core ol 9 | 31:7.2.0-43.el9 | [ELSA-2026-500245](https://patchblox.com/security/data/fix/linux/elsa-2026-500245.md) | Sep 3, 2026 |
| Linux | qemu-kvm-device-usb-host ol 9 | 31:7.2.0-43.el9 | [ELSA-2026-500245](https://patchblox.com/security/data/fix/linux/elsa-2026-500245.md) | Sep 3, 2026 |
| Linux | qemu-virtiofsd ol 9 | 31:7.2.0-43.el9 | [ELSA-2026-500245](https://patchblox.com/security/data/fix/linux/elsa-2026-500245.md) | Sep 3, 2026 |

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Data as of 2026-11-11T01:43:54Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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