CVE-2026-63954
Last modified
CVE-2026-63954 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: hpfs: fix a crash if hpfs_map_dnode_bitmap fails If hpfs_map_dnode_bitmap fails, the code would call hpfs_brelse4 on uninitialized quad buffer head, causing a crash.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.
Description
In the Linux kernel, the following vulnerability has been resolved: hpfs: fix a crash if hpfs_map_dnode_bitmap fails If hpfs_map_dnode_bitmap fails, the code would call hpfs_brelse4 on uninitialized quad buffer head, causing a crash.
Metrics
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 2.6.12.1, < 5.10.259 | — |
| Linux | Linux Kernel | >= 5.11, < 5.15.210 | — |
| Linux | Linux Kernel | >= 5.16, < 6.1.176 | — |
| Linux | Linux Kernel | >= 6.2, < 6.6.143 | — |
| Linux | Linux Kernel | >= 6.7, < 6.12.93 | — |
| Linux | Linux Kernel | >= 6.13, < 6.18.35 | — |
| Linux | Linux Kernel | >= 6.19, < 7.0.12 | — |
| Linux | Linux Kernel | 2.6.12 | — |
| Linux | Linux Kernel | 7.1 | Rc1 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-63954?
How severe is CVE-2026-63954?
How do I fix CVE-2026-63954?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-63949In the Linux kernel, the following vulnerability has been re…7.1
- CVE-2026-6395The Word 2 Cash plugin for WordPress is vulnerable to Cross-…6.1
- CVE-2026-63950In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2026-63951In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2026-63952In the Linux kernel, the following vulnerability has been re…8.4
- CVE-2026-63953In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2026-63955In the Linux kernel, the following vulnerability has been re…7.5
- CVE-2026-63956In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2026-63957In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2026-63958In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2026-63959In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2026-6396The Fast & Fancy Filter – 3F plugin for WordPress is vulnera…4.3
Are you affected by CVE-2026-63954?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST